From 939b00df0306bc4b5cd25c3c3c78e89b91e72fc8 Mon Sep 17 00:00:00 2001
From: Andries Brouwer <aeb@cwi.nl>
Date: Mon, 12 Feb 2007 00:52:49 -0800
Subject: [PATCH] Minix V3 support

This morning I needed to read a Minix V3 filesystem, but unfortunately my
2.6.19 did not support that, and neither did the downloaded 2.6.20rc4.

Fortunately, google told me that Daniel Aragones had already done the work,
patch found at http://www.terra.es/personal2/danarag/

Unfortunaly, looking at the patch was painful to my eyes, so I polished it
a bit before applying.  The resulting kernel boots, and reads the
filesystem it needed to read.

Signed-off-by: Daniel Aragones <danarag@gmail.com>
Signed-off-by: Andries Brouwer <aeb@cwi.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/minix/bitmap.c       |  69 ++++++++++++---------
 fs/minix/dir.c          | 162 +++++++++++++++++++++++++++++++++---------------
 fs/minix/inode.c        |  49 +++++++++++----
 fs/minix/itree_common.c |  16 ++---
 fs/minix/itree_v1.c     |   4 +-
 fs/minix/itree_v2.c     |   7 ++-
 fs/minix/minix.h        |  12 ++--
 7 files changed, 208 insertions(+), 111 deletions(-)

(limited to 'fs/minix')

diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
index df6b1075b54..c4a554df7b7 100644
--- a/fs/minix/bitmap.c
+++ b/fs/minix/bitmap.c
@@ -26,14 +26,14 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
 	for (i=0; i<numblocks-1; i++) {
 		if (!(bh=map[i])) 
 			return(0);
-		for (j=0; j<BLOCK_SIZE; j++)
+		for (j=0; j<bh->b_size; j++)
 			sum += nibblemap[bh->b_data[j] & 0xf]
 				+ nibblemap[(bh->b_data[j]>>4) & 0xf];
 	}
 
 	if (numblocks==0 || !(bh=map[numblocks-1]))
 		return(0);
-	i = ((numbits-(numblocks-1)*BLOCK_SIZE*8)/16)*2;
+	i = ((numbits - (numblocks-1) * bh->b_size * 8) / 16) * 2;
 	for (j=0; j<i; j++) {
 		sum += nibblemap[bh->b_data[j] & 0xf]
 			+ nibblemap[(bh->b_data[j]>>4) & 0xf];
@@ -48,28 +48,29 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
 	return(sum);
 }
 
-void minix_free_block(struct inode * inode, int block)
+void minix_free_block(struct inode *inode, unsigned long block)
 {
-	struct super_block * sb = inode->i_sb;
-	struct minix_sb_info * sbi = minix_sb(sb);
-	struct buffer_head * bh;
-	unsigned int bit,zone;
+	struct super_block *sb = inode->i_sb;
+	struct minix_sb_info *sbi = minix_sb(sb);
+	struct buffer_head *bh;
+	int k = sb->s_blocksize_bits + 3;
+	unsigned long bit, zone;
 
 	if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
 		printk("Trying to free block not in datazone\n");
 		return;
 	}
 	zone = block - sbi->s_firstdatazone + 1;
-	bit = zone & 8191;
-	zone >>= 13;
+	bit = zone & ((1<<k) - 1);
+	zone >>= k;
 	if (zone >= sbi->s_zmap_blocks) {
 		printk("minix_free_block: nonexistent bitmap buffer\n");
 		return;
 	}
 	bh = sbi->s_zmap[zone];
 	lock_kernel();
-	if (!minix_test_and_clear_bit(bit,bh->b_data))
-		printk("free_block (%s:%d): bit already cleared\n",
+	if (!minix_test_and_clear_bit(bit, bh->b_data))
+		printk("minix_free_block (%s:%lu): bit already cleared\n",
 		       sb->s_id, block);
 	unlock_kernel();
 	mark_buffer_dirty(bh);
@@ -79,6 +80,7 @@ void minix_free_block(struct inode * inode, int block)
 int minix_new_block(struct inode * inode)
 {
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	int bits_per_zone = 8 * inode->i_sb->s_blocksize;
 	int i;
 
 	for (i = 0; i < sbi->s_zmap_blocks; i++) {
@@ -86,11 +88,12 @@ int minix_new_block(struct inode * inode)
 		int j;
 
 		lock_kernel();
-		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192) {
-			minix_set_bit(j,bh->b_data);
+		j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+		if (j < bits_per_zone) {
+			minix_set_bit(j, bh->b_data);
 			unlock_kernel();
 			mark_buffer_dirty(bh);
-			j += i*8192 + sbi->s_firstdatazone-1;
+			j += i * bits_per_zone + sbi->s_firstdatazone-1;
 			if (j < sbi->s_firstdatazone || j >= sbi->s_nzones)
 				break;
 			return j;
@@ -137,6 +140,7 @@ minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
 	int block;
 	struct minix_sb_info *sbi = minix_sb(sb);
 	struct minix2_inode *p;
+	int minix2_inodes_per_block = sb->s_blocksize / sizeof(struct minix2_inode);
 
 	*bh = NULL;
 	if (!ino || ino > sbi->s_ninodes) {
@@ -146,14 +150,14 @@ minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
 	}
 	ino--;
 	block = 2 + sbi->s_imap_blocks + sbi->s_zmap_blocks +
-		 ino / MINIX2_INODES_PER_BLOCK;
+		 ino / minix2_inodes_per_block;
 	*bh = sb_bread(sb, block);
 	if (!*bh) {
 		printk("Unable to read inode block\n");
 		return NULL;
 	}
 	p = (void *)(*bh)->b_data;
-	return p + ino % MINIX2_INODES_PER_BLOCK;
+	return p + ino % minix2_inodes_per_block;
 }
 
 /* Clear the link count and mode of a deleted inode on disk. */
@@ -185,26 +189,30 @@ static void minix_clear_inode(struct inode *inode)
 
 void minix_free_inode(struct inode * inode)
 {
+	struct super_block *sb = inode->i_sb;
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
-	struct buffer_head * bh;
-	unsigned long ino;
+	struct buffer_head *bh;
+	int k = sb->s_blocksize_bits + 3;
+	unsigned long ino, bit;
 
 	ino = inode->i_ino;
 	if (ino < 1 || ino > sbi->s_ninodes) {
 		printk("minix_free_inode: inode 0 or nonexistent inode\n");
 		goto out;
 	}
-	if ((ino >> 13) >= sbi->s_imap_blocks) {
+	bit = ino & ((1<<k) - 1);
+	ino >>= k;
+	if (ino >= sbi->s_imap_blocks) {
 		printk("minix_free_inode: nonexistent imap in superblock\n");
 		goto out;
 	}
 
 	minix_clear_inode(inode);	/* clear on-disk copy */
 
-	bh = sbi->s_imap[ino >> 13];
+	bh = sbi->s_imap[ino];
 	lock_kernel();
-	if (!minix_test_and_clear_bit(ino & 8191, bh->b_data))
-		printk("minix_free_inode: bit %lu already cleared\n", ino);
+	if (!minix_test_and_clear_bit(bit, bh->b_data))
+		printk("minix_free_inode: bit %lu already cleared\n", bit);
 	unlock_kernel();
 	mark_buffer_dirty(bh);
  out:
@@ -217,35 +225,38 @@ struct inode * minix_new_inode(const struct inode * dir, int * error)
 	struct minix_sb_info *sbi = minix_sb(sb);
 	struct inode *inode = new_inode(sb);
 	struct buffer_head * bh;
-	int i,j;
+	int bits_per_zone = 8 * sb->s_blocksize;
+	unsigned long j;
+	int i;
 
 	if (!inode) {
 		*error = -ENOMEM;
 		return NULL;
 	}
-	j = 8192;
+	j = bits_per_zone;
 	bh = NULL;
 	*error = -ENOSPC;
 	lock_kernel();
 	for (i = 0; i < sbi->s_imap_blocks; i++) {
 		bh = sbi->s_imap[i];
-		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192)
+		j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+		if (j < bits_per_zone)
 			break;
 	}
-	if (!bh || j >= 8192) {
+	if (!bh || j >= bits_per_zone) {
 		unlock_kernel();
 		iput(inode);
 		return NULL;
 	}
-	if (minix_test_and_set_bit(j,bh->b_data)) {	/* shouldn't happen */
-		printk("new_inode: bit already set\n");
+	if (minix_test_and_set_bit(j, bh->b_data)) {	/* shouldn't happen */
 		unlock_kernel();
+		printk("minix_new_inode: bit already set\n");
 		iput(inode);
 		return NULL;
 	}
 	unlock_kernel();
 	mark_buffer_dirty(bh);
-	j += i*8192;
+	j += i * bits_per_zone;
 	if (!j || j > sbi->s_ninodes) {
 		iput(inode);
 		return NULL;
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index ab782c4086f..cb4cb571fdd 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -4,6 +4,8 @@
  *  Copyright (C) 1991, 1992 Linus Torvalds
  *
  *  minix directory handling functions
+ *
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include "minix.h"
@@ -11,6 +13,7 @@
 #include <linux/smp_lock.h>
 
 typedef struct minix_dir_entry minix_dirent;
+typedef struct minix3_dir_entry minix3_dirent;
 
 static int minix_readdir(struct file *, void *, filldir_t);
 
@@ -89,6 +92,8 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
 	unsigned long npages = dir_pages(inode);
 	struct minix_sb_info *sbi = minix_sb(sb);
 	unsigned chunk_size = sbi->s_dirsize;
+	char *name;
+	__u32 inumber;
 
 	lock_kernel();
 
@@ -105,16 +110,24 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
 		kaddr = (char *)page_address(page);
 		p = kaddr+offset;
 		limit = kaddr + minix_last_byte(inode, n) - chunk_size;
-		for ( ; p <= limit ; p = minix_next_entry(p, sbi)) {
-			minix_dirent *de = (minix_dirent *)p;
-			if (de->inode) {
+		for ( ; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				name = de3->name;
+				inumber = de3->inode;
+	 		} else {
+				minix_dirent *de = (minix_dirent *)p;
+				name = de->name;
+				inumber = de->inode;
+			}
+			if (inumber) {
 				int over;
-				unsigned l = strnlen(de->name,sbi->s_namelen);
 
+				unsigned l = strnlen(name, sbi->s_namelen);
 				offset = p - kaddr;
-				over = filldir(dirent, de->name, l,
-						(n<<PAGE_CACHE_SHIFT) | offset,
-						de->inode, DT_UNKNOWN);
+				over = filldir(dirent, name, l,
+					(n << PAGE_CACHE_SHIFT) | offset,
+					inumber, DT_UNKNOWN);
 				if (over) {
 					dir_put_page(page);
 					goto done;
@@ -156,23 +169,34 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
 	unsigned long n;
 	unsigned long npages = dir_pages(dir);
 	struct page *page = NULL;
-	struct minix_dir_entry *de;
+	char *p;
 
+	char *namx;
+	__u32 inumber;
 	*res_page = NULL;
 
 	for (n = 0; n < npages; n++) {
-		char *kaddr;
+		char *kaddr, *limit;
+
 		page = dir_get_page(dir, n);
 		if (IS_ERR(page))
 			continue;
 
 		kaddr = (char*)page_address(page);
-		de = (struct minix_dir_entry *) kaddr;
-		kaddr += minix_last_byte(dir, n) - sbi->s_dirsize;
-		for ( ; (char *) de <= kaddr ; de = minix_next_entry(de,sbi)) {
-			if (!de->inode)
+		limit = kaddr + minix_last_byte(dir, n) - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				namx = de3->name;
+				inumber = de3->inode;
+ 			} else {
+				minix_dirent *de = (minix_dirent *)p;
+				namx = de->name;
+				inumber = de->inode;
+			}
+			if (!inumber)
 				continue;
-			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+			if (namecompare(namelen, sbi->s_namelen, name, namx))
 				goto found;
 		}
 		dir_put_page(page);
@@ -181,7 +205,7 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
 
 found:
 	*res_page = page;
-	return de;
+	return (minix_dirent *)p;
 }
 
 int minix_add_link(struct dentry *dentry, struct inode *inode)
@@ -192,12 +216,15 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	struct super_block * sb = dir->i_sb;
 	struct minix_sb_info * sbi = minix_sb(sb);
 	struct page *page = NULL;
-	struct minix_dir_entry * de;
 	unsigned long npages = dir_pages(dir);
 	unsigned long n;
-	char *kaddr;
+	char *kaddr, *p;
+	minix_dirent *de;
+	minix3_dirent *de3;
 	unsigned from, to;
 	int err;
+	char *namx = NULL;
+	__u32 inumber;
 
 	/*
 	 * We take care of directory expansion in the same loop
@@ -205,7 +232,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	 * to protect that region.
 	 */
 	for (n = 0; n <= npages; n++) {
-		char *dir_end;
+		char *limit, *dir_end;
 
 		page = dir_get_page(dir, n);
 		err = PTR_ERR(page);
@@ -214,20 +241,30 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 		lock_page(page);
 		kaddr = (char*)page_address(page);
 		dir_end = kaddr + minix_last_byte(dir, n);
-		de = (minix_dirent *)kaddr;
-		kaddr += PAGE_CACHE_SIZE - sbi->s_dirsize;
-		while ((char *)de <= kaddr) {
-			if ((char *)de == dir_end) {
+		limit = kaddr + PAGE_CACHE_SIZE - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			de = (minix_dirent *)p;
+			de3 = (minix3_dirent *)p;
+			if (sbi->s_version == MINIX_V3) {
+				namx = de3->name;
+				inumber = de3->inode;
+		 	} else {
+  				namx = de->name;
+				inumber = de->inode;
+			}
+			if (p == dir_end) {
 				/* We hit i_size */
-				de->inode = 0;
+				if (sbi->s_version == MINIX_V3)
+					de3->inode = 0;
+		 		else
+					de->inode = 0;
 				goto got_it;
 			}
-			if (!de->inode)
+			if (!inumber)
 				goto got_it;
 			err = -EEXIST;
-			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+			if (namecompare(namelen, sbi->s_namelen, name, namx))
 				goto out_unlock;
-			de = minix_next_entry(de, sbi);
 		}
 		unlock_page(page);
 		dir_put_page(page);
@@ -236,14 +273,19 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
 	return -EINVAL;
 
 got_it:
-	from = (char*)de - (char*)page_address(page);
+	from = p - (char*)page_address(page);
 	to = from + sbi->s_dirsize;
 	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
 	if (err)
 		goto out_unlock;
-	memcpy (de->name, name, namelen);
-	memset (de->name + namelen, 0, sbi->s_dirsize - namelen - 2);
-	de->inode = inode->i_ino;
+	memcpy (namx, name, namelen);
+	if (sbi->s_version == MINIX_V3) {
+		memset (namx + namelen, 0, sbi->s_dirsize - namelen - 4);
+		de3->inode = inode->i_ino;
+	} else {
+		memset (namx + namelen, 0, sbi->s_dirsize - namelen - 2);
+		de->inode = inode->i_ino;
+	}
 	err = dir_commit_chunk(page, from, to);
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
 	mark_inode_dirty(dir);
@@ -283,8 +325,7 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
 {
 	struct address_space *mapping = inode->i_mapping;
 	struct page *page = grab_cache_page(mapping, 0);
-	struct minix_sb_info * sbi = minix_sb(inode->i_sb);
-	struct minix_dir_entry * de;
+	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
 	char *kaddr;
 	int err;
 
@@ -299,12 +340,23 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
 	kaddr = kmap_atomic(page, KM_USER0);
 	memset(kaddr, 0, PAGE_CACHE_SIZE);
 
-	de = (struct minix_dir_entry *)kaddr;
-	de->inode = inode->i_ino;
-	strcpy(de->name,".");
-	de = minix_next_entry(de, sbi);
-	de->inode = dir->i_ino;
-	strcpy(de->name,"..");
+	if (sbi->s_version == MINIX_V3) {
+		minix3_dirent *de3 = (minix3_dirent *)kaddr;
+
+		de3->inode = inode->i_ino;
+		strcpy(de3->name, ".");
+		de3 = minix_next_entry(de3, sbi);
+		de3->inode = dir->i_ino;
+		strcpy(de3->name, "..");
+	} else {
+		minix_dirent *de = (minix_dirent *)kaddr;
+
+		de->inode = inode->i_ino;
+		strcpy(de->name, ".");
+		de = minix_next_entry(de, sbi);
+		de->inode = dir->i_ino;
+		strcpy(de->name, "..");
+	}
 	kunmap_atomic(kaddr, KM_USER0);
 
 	err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize);
@@ -321,33 +373,41 @@ int minix_empty_dir(struct inode * inode)
 	struct page *page = NULL;
 	unsigned long i, npages = dir_pages(inode);
 	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	char *name;
+	__u32 inumber;
 
 	for (i = 0; i < npages; i++) {
-		char *kaddr;
-		minix_dirent * de;
-		page = dir_get_page(inode, i);
+		char *p, *kaddr, *limit;
 
+		page = dir_get_page(inode, i);
 		if (IS_ERR(page))
 			continue;
 
 		kaddr = (char *)page_address(page);
-		de = (minix_dirent *)kaddr;
-		kaddr += minix_last_byte(inode, i) - sbi->s_dirsize;
+		limit = kaddr + minix_last_byte(inode, i) - sbi->s_dirsize;
+		for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+			if (sbi->s_version == MINIX_V3) {
+				minix3_dirent *de3 = (minix3_dirent *)p;
+				name = de3->name;
+				inumber = de3->inode;
+			} else {
+				minix_dirent *de = (minix_dirent *)p;
+				name = de->name;
+				inumber = de->inode;
+			}
 
-		while ((char *)de <= kaddr) {
-			if (de->inode != 0) {
+			if (inumber != 0) {
 				/* check for . and .. */
-				if (de->name[0] != '.')
+				if (name[0] != '.')
 					goto not_empty;
-				if (!de->name[1]) {
-					if (de->inode != inode->i_ino)
+				if (!name[1]) {
+					if (inumber != inode->i_ino)
 						goto not_empty;
-				} else if (de->name[1] != '.')
+				} else if (name[1] != '.')
 					goto not_empty;
-				else if (de->name[2])
+				else if (name[2])
 					goto not_empty;
 			}
-			de = minix_next_entry(de, sbi);
 		}
 		dir_put_page(page);
 	}
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 629e09b38c5..9ddfcc14828 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -7,6 +7,7 @@
  *	Minix V2 fs support.
  *
  *  Modified for 680x0 by Andreas Schwab
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include <linux/module.h>
@@ -36,7 +37,8 @@ static void minix_put_super(struct super_block *sb)
 	struct minix_sb_info *sbi = minix_sb(sb);
 
 	if (!(sb->s_flags & MS_RDONLY)) {
-		sbi->s_ms->s_state = sbi->s_mount_state;
+		if (sbi->s_version != MINIX_V3)	 /* s_state is now out from V3 sb */
+			sbi->s_ms->s_state = sbi->s_mount_state;
 		mark_buffer_dirty(sbi->s_sbh);
 	}
 	for (i = 0; i < sbi->s_imap_blocks; i++)
@@ -117,12 +119,17 @@ static int minix_remount (struct super_block * sb, int * flags, char * data)
 		    !(sbi->s_mount_state & MINIX_VALID_FS))
 			return 0;
 		/* Mounting a rw partition read-only. */
-		ms->s_state = sbi->s_mount_state;
+		if (sbi->s_version != MINIX_V3)
+			ms->s_state = sbi->s_mount_state;
 		mark_buffer_dirty(sbi->s_sbh);
 	} else {
 	  	/* Mount a partition which is read-only, read-write. */
-		sbi->s_mount_state = ms->s_state;
-		ms->s_state &= ~MINIX_VALID_FS;
+		if (sbi->s_version != MINIX_V3) {
+			sbi->s_mount_state = ms->s_state;
+			ms->s_state &= ~MINIX_VALID_FS;
+		} else {
+			sbi->s_mount_state = MINIX_VALID_FS;
+		}
 		mark_buffer_dirty(sbi->s_sbh);
 
 		if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -140,7 +147,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 	struct buffer_head *bh;
 	struct buffer_head **map;
 	struct minix_super_block *ms;
-	int i, block;
+	struct minix3_super_block *m3s = NULL;
+	unsigned long i, block;
 	struct inode *root_inode;
 	struct minix_sb_info *sbi;
 
@@ -192,6 +200,22 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 		sbi->s_dirsize = 32;
 		sbi->s_namelen = 30;
 		sbi->s_link_max = MINIX2_LINK_MAX;
+	} else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) {
+		m3s = (struct minix3_super_block *) bh->b_data;
+		s->s_magic = m3s->s_magic;
+		sbi->s_imap_blocks = m3s->s_imap_blocks;
+		sbi->s_zmap_blocks = m3s->s_zmap_blocks;
+		sbi->s_firstdatazone = m3s->s_firstdatazone;
+		sbi->s_log_zone_size = m3s->s_log_zone_size;
+		sbi->s_max_size = m3s->s_max_size;
+		sbi->s_ninodes = m3s->s_ninodes;
+		sbi->s_nzones = m3s->s_zones;
+		sbi->s_dirsize = 64;
+		sbi->s_namelen = 60;
+		sbi->s_version = MINIX_V3;
+		sbi->s_link_max = MINIX2_LINK_MAX;
+		sbi->s_mount_state = MINIX_VALID_FS;
+		sb_set_blocksize(s, m3s->s_blocksize);
 	} else
 		goto out_no_fs;
 
@@ -236,7 +260,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
 		s->s_root->d_op = &minix_dentry_operations;
 
 	if (!(s->s_flags & MS_RDONLY)) {
-		ms->s_state &= ~MINIX_VALID_FS;
+		if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */
+			ms->s_state &= ~MINIX_VALID_FS;
 		mark_buffer_dirty(bh);
 	}
 	if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -278,8 +303,8 @@ out_illegal_sb:
 
 out_no_fs:
 	if (!silent)
-		printk("VFS: Can't find a Minix or Minix V2 filesystem "
-			"on device %s\n", s->s_id);
+		printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 "
+		       "on device %s.\n", s->s_id);
 out_release:
 	brelse(bh);
 	goto out;
@@ -537,12 +562,14 @@ int minix_sync_inode(struct inode * inode)
 
 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
+	struct inode *dir = dentry->d_parent->d_inode;
+	struct super_block *sb = dir->i_sb;
 	generic_fillattr(dentry->d_inode, stat);
 	if (INODE_VERSION(dentry->d_inode) == MINIX_V1)
-		stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size);
+		stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb);
 	else
-		stat->blocks = (BLOCK_SIZE / 512) * V2_minix_blocks(stat->size);
-	stat->blksize = BLOCK_SIZE;
+		stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb);
+	stat->blksize = sb->s_blocksize;
 	return 0;
 }
 
diff --git a/fs/minix/itree_common.c b/fs/minix/itree_common.c
index 429baf8de10..a731cabf154 100644
--- a/fs/minix/itree_common.c
+++ b/fs/minix/itree_common.c
@@ -23,7 +23,7 @@ static inline int verify_chain(Indirect *from, Indirect *to)
 
 static inline block_t *block_end(struct buffer_head *bh)
 {
-	return (block_t *)((char*)bh->b_data + BLOCK_SIZE);
+	return (block_t *)((char*)bh->b_data + bh->b_size);
 }
 
 static inline Indirect *get_branch(struct inode *inode,
@@ -85,7 +85,7 @@ static int alloc_branch(struct inode *inode,
 		branch[n].key = cpu_to_block(nr);
 		bh = sb_getblk(inode->i_sb, parent);
 		lock_buffer(bh);
-		memset(bh->b_data, 0, BLOCK_SIZE);
+		memset(bh->b_data, 0, bh->b_size);
 		branch[n].bh = bh;
 		branch[n].p = (block_t*) bh->b_data + offsets[n];
 		*branch[n].p = branch[n].key;
@@ -292,6 +292,7 @@ static void free_branches(struct inode *inode, block_t *p, block_t *q, int depth
 
 static inline void truncate (struct inode * inode)
 {
+	struct super_block *sb = inode->i_sb;
 	block_t *idata = i_data(inode);
 	int offsets[DEPTH];
 	Indirect chain[DEPTH];
@@ -301,7 +302,7 @@ static inline void truncate (struct inode * inode)
 	int first_whole;
 	long iblock;
 
-	iblock = (inode->i_size + BLOCK_SIZE-1) >> 10;
+	iblock = (inode->i_size + sb->s_blocksize -1) >> sb->s_blocksize_bits;
 	block_truncate_page(inode->i_mapping, inode->i_size, get_block);
 
 	n = block_to_path(inode, iblock, offsets);
@@ -346,15 +347,16 @@ do_indirects:
 	mark_inode_dirty(inode);
 }
 
-static inline unsigned nblocks(loff_t size)
+static inline unsigned nblocks(loff_t size, struct super_block *sb)
 {
+	int k = sb->s_blocksize_bits - 10;
 	unsigned blocks, res, direct = DIRECT, i = DEPTH;
-	blocks = (size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
+	blocks = (size + sb->s_blocksize - 1) >> (BLOCK_SIZE_BITS + k);
 	res = blocks;
 	while (--i && blocks > direct) {
 		blocks -= direct;
-		blocks += BLOCK_SIZE/sizeof(block_t) - 1;
-		blocks /= BLOCK_SIZE/sizeof(block_t);
+		blocks += sb->s_blocksize/sizeof(block_t) - 1;
+		blocks /= sb->s_blocksize/sizeof(block_t);
 		res += blocks;
 		direct = 1;
 	}
diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c
index 656b1347a25..1a5f3bf0bce 100644
--- a/fs/minix/itree_v1.c
+++ b/fs/minix/itree_v1.c
@@ -55,7 +55,7 @@ void V1_minix_truncate(struct inode * inode)
 	truncate(inode);
 }
 
-unsigned V1_minix_blocks(loff_t size)
+unsigned V1_minix_blocks(loff_t size, struct super_block *sb)
 {
-	return nblocks(size);
+	return nblocks(size, sb);
 }
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index 9adcdc754e0..ad8f0dec4ef 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -23,10 +23,11 @@ static inline block_t *i_data(struct inode *inode)
 static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 {
 	int n = 0;
+	struct super_block *sb = inode->i_sb;
 
 	if (block < 0) {
 		printk("minix_bmap: block<0\n");
-	} else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) {
+	} else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
 		printk("minix_bmap: block>big\n");
 	} else if (block < 7) {
 		offsets[n++] = block;
@@ -60,7 +61,7 @@ void V2_minix_truncate(struct inode * inode)
 	truncate(inode);
 }
 
-unsigned V2_minix_blocks(loff_t size)
+unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
 {
-	return nblocks(size);
+	return nblocks(size, sb);
 }
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index c55b77cdcc8..e016ee91d93 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -7,11 +7,10 @@
  * truncated. Else they will be disallowed (ENAMETOOLONG).
  */
 #define NO_TRUNCATE 1
-
 #define INODE_VERSION(inode)	minix_sb(inode->i_sb)->s_version
-
 #define MINIX_V1		0x0001		/* original minix fs */
 #define MINIX_V2		0x0002		/* minix V2 fs */
+#define MINIX_V3		0x0003		/* minix V3 fs */
 
 /*
  * minix fs inode data in memory
@@ -52,12 +51,10 @@ extern struct inode * minix_new_inode(const struct inode * dir, int * error);
 extern void minix_free_inode(struct inode * inode);
 extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi);
 extern int minix_new_block(struct inode * inode);
-extern void minix_free_block(struct inode * inode, int block);
+extern void minix_free_block(struct inode *inode, unsigned long block);
 extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi);
-
 extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 
-extern void V2_minix_truncate(struct inode *);
 extern void V1_minix_truncate(struct inode *);
 extern void V2_minix_truncate(struct inode *);
 extern void minix_truncate(struct inode *);
@@ -65,8 +62,8 @@ extern int minix_sync_inode(struct inode *);
 extern void minix_set_inode(struct inode *, dev_t);
 extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
 extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
-extern unsigned V1_minix_blocks(loff_t);
-extern unsigned V2_minix_blocks(loff_t);
+extern unsigned V1_minix_blocks(loff_t, struct super_block *);
+extern unsigned V2_minix_blocks(loff_t, struct super_block *);
 
 extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
 extern int minix_add_link(struct dentry*, struct inode*);
@@ -76,7 +73,6 @@ extern int minix_empty_dir(struct inode*);
 extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
 extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
 extern ino_t minix_inode_by_name(struct dentry*);
-
 extern int minix_sync_file(struct file *, struct dentry *, int);
 
 extern struct inode_operations minix_file_inode_operations;
-- 
cgit v1.2.3-70-g09d2


From 92e1d5be91a0e3ffa5c4697eeb09b2aa22792122 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <arjan@linux.intel.com>
Date: Mon, 12 Feb 2007 00:55:39 -0800
Subject: [PATCH] mark struct inode_operations const 2

Many struct inode_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/gfs2/ops_inode.c     |  8 ++++----
 fs/gfs2/ops_inode.h     |  8 ++++----
 fs/hfs/dir.c            |  2 +-
 fs/hfs/hfs_fs.h         |  2 +-
 fs/hfs/inode.c          |  4 ++--
 fs/hfsplus/dir.c        |  2 +-
 fs/hfsplus/inode.c      |  4 ++--
 fs/hostfs/hostfs_kern.c |  8 ++++----
 fs/hpfs/file.c          |  2 +-
 fs/hpfs/hpfs_fn.h       |  4 ++--
 fs/hpfs/namei.c         |  2 +-
 fs/hppfs/hppfs_kern.c   |  6 +++---
 fs/hugetlbfs/inode.c    |  8 ++++----
 fs/isofs/dir.c          |  2 +-
 fs/isofs/isofs.h        |  2 +-
 fs/jffs/inode-v23.c     |  8 ++++----
 fs/jffs2/dir.c          |  2 +-
 fs/jffs2/file.c         |  2 +-
 fs/jffs2/os-linux.h     |  6 +++---
 fs/jffs2/symlink.c      |  2 +-
 fs/jfs/file.c           |  2 +-
 fs/jfs/jfs_inode.h      |  6 +++---
 fs/jfs/namei.c          |  2 +-
 fs/jfs/symlink.c        |  2 +-
 fs/libfs.c              |  2 +-
 fs/minix/file.c         |  2 +-
 fs/minix/inode.c        |  2 +-
 fs/minix/minix.h        |  4 ++--
 fs/minix/namei.c        |  2 +-
 fs/msdos/namei.c        |  2 +-
 fs/namei.c              |  2 +-
 fs/ncpfs/dir.c          |  2 +-
 fs/ncpfs/file.c         |  2 +-
 fs/ncpfs/inode.c        |  2 +-
 fs/nfs/dir.c            |  6 +++---
 fs/nfs/file.c           |  4 ++--
 fs/nfs/namespace.c      |  4 ++--
 fs/nfs/nfs4_fs.h        |  2 +-
 fs/nfs/nfs4proc.c       |  2 +-
 fs/nfs/symlink.c        |  2 +-
 fs/ntfs/file.c          |  4 ++--
 fs/ntfs/namei.c         |  2 +-
 fs/ntfs/ntfs.h          |  6 +++---
 fs/ocfs2/dlm/dlmfs.c    | 12 ++++++------
 fs/ocfs2/file.c         |  4 ++--
 fs/ocfs2/file.h         |  4 ++--
 fs/ocfs2/namei.c        |  2 +-
 fs/ocfs2/namei.h        |  2 +-
 fs/ocfs2/symlink.c      |  4 ++--
 fs/ocfs2/symlink.h      |  4 ++--
 fs/openpromfs/inode.c   |  2 +-
 ipc/mqueue.c            |  4 ++--
 kernel/cpuset.c         |  2 +-
 mm/shmem.c              | 20 ++++++++++----------
 54 files changed, 105 insertions(+), 105 deletions(-)

(limited to 'fs/minix')

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index f40a84807d7..60f47bf2e8e 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1115,7 +1115,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
 	return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
 }
 
-struct inode_operations gfs2_file_iops = {
+const struct inode_operations gfs2_file_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
@@ -1125,7 +1125,7 @@ struct inode_operations gfs2_file_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dev_iops = {
+const struct inode_operations gfs2_dev_iops = {
 	.permission = gfs2_permission,
 	.setattr = gfs2_setattr,
 	.getattr = gfs2_getattr,
@@ -1135,7 +1135,7 @@ struct inode_operations gfs2_dev_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dir_iops = {
+const struct inode_operations gfs2_dir_iops = {
 	.create = gfs2_create,
 	.lookup = gfs2_lookup,
 	.link = gfs2_link,
@@ -1154,7 +1154,7 @@ struct inode_operations gfs2_dir_iops = {
 	.removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_symlink_iops = {
+const struct inode_operations gfs2_symlink_iops = {
 	.readlink = gfs2_readlink,
 	.follow_link = gfs2_follow_link,
 	.permission = gfs2_permission,
diff --git a/fs/gfs2/ops_inode.h b/fs/gfs2/ops_inode.h
index b15acb4fd34..34f0caac1a0 100644
--- a/fs/gfs2/ops_inode.h
+++ b/fs/gfs2/ops_inode.h
@@ -12,9 +12,9 @@
 
 #include <linux/fs.h>
 
-extern struct inode_operations gfs2_file_iops;
-extern struct inode_operations gfs2_dir_iops;
-extern struct inode_operations gfs2_symlink_iops;
-extern struct inode_operations gfs2_dev_iops;
+extern const struct inode_operations gfs2_file_iops;
+extern const struct inode_operations gfs2_dir_iops;
+extern const struct inode_operations gfs2_symlink_iops;
+extern const struct inode_operations gfs2_dev_iops;
 
 #endif /* __OPS_INODE_DOT_H__ */
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index e2e0358da33..7c69b98a2e4 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -320,7 +320,7 @@ const struct file_operations hfs_dir_operations = {
 	.release	= hfs_dir_release,
 };
 
-struct inode_operations hfs_dir_inode_operations = {
+const struct inode_operations hfs_dir_inode_operations = {
 	.create		= hfs_create,
 	.lookup		= hfs_lookup,
 	.unlink		= hfs_unlink,
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 735332dfd1b..147374b6f67 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -170,7 +170,7 @@ extern void hfs_cat_build_key(struct super_block *, btree_key *, u32, struct qst
 
 /* dir.c */
 extern const struct file_operations hfs_dir_operations;
-extern struct inode_operations hfs_dir_inode_operations;
+extern const struct inode_operations hfs_dir_inode_operations;
 
 /* extent.c */
 extern int hfs_ext_keycmp(const btree_key *, const btree_key *);
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 5cb7f8fee8d..fafcba59387 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -18,7 +18,7 @@
 #include "btree.h"
 
 static const struct file_operations hfs_file_operations;
-static struct inode_operations hfs_file_inode_operations;
+static const struct inode_operations hfs_file_inode_operations;
 
 /*================ Variable-like macros ================*/
 
@@ -612,7 +612,7 @@ static const struct file_operations hfs_file_operations = {
 	.release	= hfs_file_release,
 };
 
-static struct inode_operations hfs_file_inode_operations = {
+static const struct inode_operations hfs_file_inode_operations = {
 	.lookup		= hfs_file_lookup,
 	.truncate	= hfs_file_truncate,
 	.setattr	= hfs_inode_setattr,
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index e886ac8460d..78137007ccc 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -471,7 +471,7 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
 	return res;
 }
 
-struct inode_operations hfsplus_dir_inode_operations = {
+const struct inode_operations hfsplus_dir_inode_operations = {
 	.lookup		= hfsplus_lookup,
 	.create		= hfsplus_create,
 	.link		= hfsplus_link,
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 75e8c4d8aac..642012ac337 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -268,10 +268,10 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-extern struct inode_operations hfsplus_dir_inode_operations;
+extern const struct inode_operations hfsplus_dir_inode_operations;
 extern struct file_operations hfsplus_dir_operations;
 
-static struct inode_operations hfsplus_file_inode_operations = {
+static const struct inode_operations hfsplus_file_inode_operations = {
 	.lookup		= hfsplus_file_lookup,
 	.truncate	= hfsplus_file_truncate,
 	.permission	= hfsplus_permission,
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 69a376f35a6..fec208db5e4 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -52,8 +52,8 @@ static int append = 0;
 
 #define HOSTFS_SUPER_MAGIC 0x00c0ffee
 
-static struct inode_operations hostfs_iops;
-static struct inode_operations hostfs_dir_iops;
+static const struct inode_operations hostfs_iops;
+static const struct inode_operations hostfs_dir_iops;
 static const struct address_space_operations hostfs_link_aops;
 
 #ifndef MODULE
@@ -880,7 +880,7 @@ int hostfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 	return(0);
 }
 
-static struct inode_operations hostfs_iops = {
+static const struct inode_operations hostfs_iops = {
 	.create		= hostfs_create,
 	.link		= hostfs_link,
 	.unlink		= hostfs_unlink,
@@ -894,7 +894,7 @@ static struct inode_operations hostfs_iops = {
 	.getattr	= hostfs_getattr,
 };
 
-static struct inode_operations hostfs_dir_iops = {
+static const struct inode_operations hostfs_dir_iops = {
 	.create		= hostfs_create,
 	.lookup		= hostfs_lookup,
 	.link		= hostfs_link,
diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c
index fb4c8915010..b4eafc0f1e5 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -132,7 +132,7 @@ const struct file_operations hpfs_file_ops =
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations hpfs_file_iops =
+const struct inode_operations hpfs_file_iops =
 {
 	.truncate	= hpfs_truncate,
 	.setattr	= hpfs_notify_change,
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 1c07aa82d32..42ff60ccf2a 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -266,7 +266,7 @@ void hpfs_set_ea(struct inode *, struct fnode *, char *, char *, int);
 
 int hpfs_file_fsync(struct file *, struct dentry *, int);
 extern const struct file_operations hpfs_file_ops;
-extern struct inode_operations hpfs_file_iops;
+extern const struct inode_operations hpfs_file_iops;
 extern const struct address_space_operations hpfs_aops;
 
 /* inode.c */
@@ -302,7 +302,7 @@ void hpfs_decide_conv(struct inode *, unsigned char *, unsigned);
 
 /* namei.c */
 
-extern struct inode_operations hpfs_dir_iops;
+extern const struct inode_operations hpfs_dir_iops;
 extern const struct address_space_operations hpfs_symlink_aops;
 
 static inline struct hpfs_inode_info *hpfs_i(struct inode *inode)
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 2507e7393f3..9953cf9a2f1 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -659,7 +659,7 @@ end1:
 	return err;
 }
 
-struct inode_operations hpfs_dir_iops =
+const struct inode_operations hpfs_dir_iops =
 {
 	.create		= hpfs_create,
 	.lookup		= hpfs_lookup,
diff --git a/fs/hppfs/hppfs_kern.c b/fs/hppfs/hppfs_kern.c
index afd340a45da..bd711681631 100644
--- a/fs/hppfs/hppfs_kern.c
+++ b/fs/hppfs/hppfs_kern.c
@@ -212,7 +212,7 @@ static struct dentry *hppfs_lookup(struct inode *ino, struct dentry *dentry,
 	return(ERR_PTR(err));
 }
 
-static struct inode_operations hppfs_file_iops = {
+static const struct inode_operations hppfs_file_iops = {
 };
 
 static ssize_t read_proc(struct file *file, char __user *buf, ssize_t count,
@@ -693,11 +693,11 @@ static void* hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return ret;
 }
 
-static struct inode_operations hppfs_dir_iops = {
+static const struct inode_operations hppfs_dir_iops = {
 	.lookup		= hppfs_lookup,
 };
 
-static struct inode_operations hppfs_link_iops = {
+static const struct inode_operations hppfs_link_iops = {
 	.readlink	= hppfs_readlink,
 	.follow_link	= hppfs_follow_link,
 };
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index e6bd553fdc4..26ba81fc7fa 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -36,8 +36,8 @@
 static struct super_operations hugetlbfs_ops;
 static const struct address_space_operations hugetlbfs_aops;
 const struct file_operations hugetlbfs_file_operations;
-static struct inode_operations hugetlbfs_dir_inode_operations;
-static struct inode_operations hugetlbfs_inode_operations;
+static const struct inode_operations hugetlbfs_dir_inode_operations;
+static const struct inode_operations hugetlbfs_inode_operations;
 
 static struct backing_dev_info hugetlbfs_backing_dev_info = {
 	.ra_pages	= 0,	/* No readahead */
@@ -563,7 +563,7 @@ const struct file_operations hugetlbfs_file_operations = {
 	.get_unmapped_area	= hugetlb_get_unmapped_area,
 };
 
-static struct inode_operations hugetlbfs_dir_inode_operations = {
+static const struct inode_operations hugetlbfs_dir_inode_operations = {
 	.create		= hugetlbfs_create,
 	.lookup		= simple_lookup,
 	.link		= simple_link,
@@ -576,7 +576,7 @@ static struct inode_operations hugetlbfs_dir_inode_operations = {
 	.setattr	= hugetlbfs_setattr,
 };
 
-static struct inode_operations hugetlbfs_inode_operations = {
+static const struct inode_operations hugetlbfs_inode_operations = {
 	.setattr	= hugetlbfs_setattr,
 };
 
diff --git a/fs/isofs/dir.c b/fs/isofs/dir.c
index 4af2548f97a..0e94c31cad9 100644
--- a/fs/isofs/dir.c
+++ b/fs/isofs/dir.c
@@ -24,7 +24,7 @@ const struct file_operations isofs_dir_operations =
 /*
  * directories can handle most operations...
  */
-struct inode_operations isofs_dir_inode_operations =
+const struct inode_operations isofs_dir_inode_operations =
 {
 	.lookup		= isofs_lookup,
 };
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index e6308c8b573..efe2872cd4e 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -174,7 +174,7 @@ isofs_normalize_block_and_offset(struct iso_directory_record* de,
 	}
 }
 
-extern struct inode_operations isofs_dir_inode_operations;
+extern const struct inode_operations isofs_dir_inode_operations;
 extern const struct file_operations isofs_dir_operations;
 extern const struct address_space_operations isofs_symlink_aops;
 extern struct export_operations isofs_export_ops;
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index 6ee20668850..fe3347defe6 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -56,9 +56,9 @@ static int jffs_remove(struct inode *dir, struct dentry *dentry, int type);
 
 static struct super_operations jffs_ops;
 static const struct file_operations jffs_file_operations;
-static struct inode_operations jffs_file_inode_operations;
+static const struct inode_operations jffs_file_inode_operations;
 static const struct file_operations jffs_dir_operations;
-static struct inode_operations jffs_dir_inode_operations;
+static const struct inode_operations jffs_dir_inode_operations;
 static const struct address_space_operations jffs_address_operations;
 
 struct kmem_cache     *node_cache = NULL;
@@ -1642,7 +1642,7 @@ static const struct file_operations jffs_file_operations =
 };
 
 
-static struct inode_operations jffs_file_inode_operations =
+static const struct inode_operations jffs_file_inode_operations =
 {
 	.lookup		= jffs_lookup,          /* lookup */
 	.setattr	= jffs_setattr,
@@ -1655,7 +1655,7 @@ static const struct file_operations jffs_dir_operations =
 };
 
 
-static struct inode_operations jffs_dir_inode_operations =
+static const struct inode_operations jffs_dir_inode_operations =
 {
 	.create		= jffs_create,
 	.lookup		= jffs_lookup,
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index da6034d5071..cdbe2fe14e2 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -46,7 +46,7 @@ const struct file_operations jffs2_dir_operations =
 };
 
 
-struct inode_operations jffs2_dir_inode_operations =
+const struct inode_operations jffs2_dir_inode_operations =
 {
 	.create =	jffs2_create,
 	.lookup =	jffs2_lookup,
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 242875f77cb..e82eeaf7590 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -54,7 +54,7 @@ const struct file_operations jffs2_file_operations =
 
 /* jffs2_file_inode_operations */
 
-struct inode_operations jffs2_file_inode_operations =
+const struct inode_operations jffs2_file_inode_operations =
 {
 	.permission =	jffs2_permission,
 	.setattr =	jffs2_setattr,
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 9f41fc01a37..e07a0edcdb4 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -153,11 +153,11 @@ void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
 
 /* dir.c */
 extern const struct file_operations jffs2_dir_operations;
-extern struct inode_operations jffs2_dir_inode_operations;
+extern const struct inode_operations jffs2_dir_inode_operations;
 
 /* file.c */
 extern const struct file_operations jffs2_file_operations;
-extern struct inode_operations jffs2_file_inode_operations;
+extern const struct inode_operations jffs2_file_inode_operations;
 extern const struct address_space_operations jffs2_file_address_operations;
 int jffs2_fsync(struct file *, struct dentry *, int);
 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
@@ -166,7 +166,7 @@ int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
 int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
 
 /* symlink.c */
-extern struct inode_operations jffs2_symlink_inode_operations;
+extern const struct inode_operations jffs2_symlink_inode_operations;
 
 /* fs.c */
 int jffs2_setattr (struct dentry *, struct iattr *);
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index b90d5aa3d96..7e4882c8a7e 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -20,7 +20,7 @@
 
 static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd);
 
-struct inode_operations jffs2_symlink_inode_operations =
+const struct inode_operations jffs2_symlink_inode_operations =
 {
 	.readlink =	generic_readlink,
 	.follow_link =	jffs2_follow_link,
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index aa9132d0492..f7f8eff19b7 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -88,7 +88,7 @@ static int jfs_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-struct inode_operations jfs_file_inode_operations = {
+const struct inode_operations jfs_file_inode_operations = {
 	.truncate	= jfs_truncate,
 	.setxattr	= jfs_setxattr,
 	.getxattr	= jfs_getxattr,
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 0d06ccfaff0..6802837f757 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -35,10 +35,10 @@ extern void jfs_set_inode_flags(struct inode *);
 extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
 
 extern const struct address_space_operations jfs_aops;
-extern struct inode_operations jfs_dir_inode_operations;
+extern const struct inode_operations jfs_dir_inode_operations;
 extern const struct file_operations jfs_dir_operations;
-extern struct inode_operations jfs_file_inode_operations;
+extern const struct inode_operations jfs_file_inode_operations;
 extern const struct file_operations jfs_file_operations;
-extern struct inode_operations jfs_symlink_inode_operations;
+extern const struct inode_operations jfs_symlink_inode_operations;
 extern struct dentry_operations jfs_ci_dentry_operations;
 #endif				/* _H_JFS_INODE */
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 7ab47561b68..41c20477126 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1503,7 +1503,7 @@ struct dentry *jfs_get_parent(struct dentry *dentry)
 	return parent;
 }
 
-struct inode_operations jfs_dir_inode_operations = {
+const struct inode_operations jfs_dir_inode_operations = {
 	.create		= jfs_create,
 	.lookup		= jfs_lookup,
 	.link		= jfs_link,
diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c
index cee43f36f51..4af1a05aad0 100644
--- a/fs/jfs/symlink.c
+++ b/fs/jfs/symlink.c
@@ -29,7 +29,7 @@ static void *jfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations jfs_symlink_inode_operations = {
+const struct inode_operations jfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= jfs_follow_link,
 	.setxattr	= jfs_setxattr,
diff --git a/fs/libfs.c b/fs/libfs.c
index 503898d5c4a..0f4ee02e0b1 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -186,7 +186,7 @@ const struct file_operations simple_dir_operations = {
 	.fsync		= simple_sync_file,
 };
 
-struct inode_operations simple_dir_inode_operations = {
+const struct inode_operations simple_dir_inode_operations = {
 	.lookup		= simple_lookup,
 };
 
diff --git a/fs/minix/file.c b/fs/minix/file.c
index 40eac2e60d2..f92baa1d757 100644
--- a/fs/minix/file.c
+++ b/fs/minix/file.c
@@ -26,7 +26,7 @@ const struct file_operations minix_file_operations = {
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations minix_file_inode_operations = {
+const struct inode_operations minix_file_inode_operations = {
 	.truncate	= minix_truncate,
 	.getattr	= minix_getattr,
 };
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 9ddfcc14828..e56822bff94 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -369,7 +369,7 @@ static const struct address_space_operations minix_aops = {
 	.bmap = minix_bmap
 };
 
-static struct inode_operations minix_symlink_inode_operations = {
+static const struct inode_operations minix_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index e016ee91d93..73ef84f8fb0 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -75,8 +75,8 @@ extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
 extern ino_t minix_inode_by_name(struct dentry*);
 extern int minix_sync_file(struct file *, struct dentry *, int);
 
-extern struct inode_operations minix_file_inode_operations;
-extern struct inode_operations minix_dir_inode_operations;
+extern const struct inode_operations minix_file_inode_operations;
+extern const struct inode_operations minix_dir_inode_operations;
 extern const struct file_operations minix_file_operations;
 extern const struct file_operations minix_dir_operations;
 extern struct dentry_operations minix_dentry_operations;
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 299bb66e3bd..f4aa7a93904 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -291,7 +291,7 @@ out:
 /*
  * directories can handle most operations...
  */
-struct inode_operations minix_dir_inode_operations = {
+const struct inode_operations minix_dir_inode_operations = {
 	.create		= minix_create,
 	.lookup		= minix_lookup,
 	.link		= minix_link,
diff --git a/fs/msdos/namei.c b/fs/msdos/namei.c
index 452461955cb..30f7d0ae221 100644
--- a/fs/msdos/namei.c
+++ b/fs/msdos/namei.c
@@ -646,7 +646,7 @@ out:
 	return err;
 }
 
-static struct inode_operations msdos_dir_inode_operations = {
+static const struct inode_operations msdos_dir_inode_operations = {
 	.create		= msdos_create,
 	.lookup		= msdos_lookup,
 	.unlink		= msdos_unlink,
diff --git a/fs/namei.c b/fs/namei.c
index e4f108f0823..161e2225c75 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2744,7 +2744,7 @@ int page_symlink(struct inode *inode, const char *symname, int len)
 			mapping_gfp_mask(inode->i_mapping));
 }
 
-struct inode_operations page_symlink_inode_operations = {
+const struct inode_operations page_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 73747772c3b..011ef0b6d2d 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -58,7 +58,7 @@ const struct file_operations ncp_dir_operations =
 #endif
 };
 
-struct inode_operations ncp_dir_inode_operations =
+const struct inode_operations ncp_dir_inode_operations =
 {
 	.create		= ncp_create,
 	.lookup		= ncp_lookup,
diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c
index b91fea03b1c..6b1f6d27099 100644
--- a/fs/ncpfs/file.c
+++ b/fs/ncpfs/file.c
@@ -297,7 +297,7 @@ const struct file_operations ncp_file_operations =
 	.fsync		= ncp_fsync,
 };
 
-struct inode_operations ncp_file_inode_operations =
+const struct inode_operations ncp_file_inode_operations =
 {
 	.setattr	= ncp_notify_change,
 };
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 67a90bf795d..730433f3d23 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -229,7 +229,7 @@ static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
 }
 
 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
-static struct inode_operations ncp_symlink_inode_operations = {
+static const struct inode_operations ncp_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index d9ba8cb0ee7..f03a770bacb 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -65,7 +65,7 @@ const struct file_operations nfs_dir_operations = {
 	.fsync		= nfs_fsync_dir,
 };
 
-struct inode_operations nfs_dir_inode_operations = {
+const struct inode_operations nfs_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_lookup,
 	.link		= nfs_link,
@@ -81,7 +81,7 @@ struct inode_operations nfs_dir_inode_operations = {
 };
 
 #ifdef CONFIG_NFS_V3
-struct inode_operations nfs3_dir_inode_operations = {
+const struct inode_operations nfs3_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_lookup,
 	.link		= nfs_link,
@@ -104,7 +104,7 @@ struct inode_operations nfs3_dir_inode_operations = {
 #ifdef CONFIG_NFS_V4
 
 static struct dentry *nfs_atomic_lookup(struct inode *, struct dentry *, struct nameidata *);
-struct inode_operations nfs4_dir_inode_operations = {
+const struct inode_operations nfs4_dir_inode_operations = {
 	.create		= nfs_create,
 	.lookup		= nfs_atomic_lookup,
 	.link		= nfs_link,
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 9e4a2b70995..8e66b5a2d49 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -68,14 +68,14 @@ const struct file_operations nfs_file_operations = {
 	.check_flags	= nfs_check_flags,
 };
 
-struct inode_operations nfs_file_inode_operations = {
+const struct inode_operations nfs_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
 };
 
 #ifdef CONFIG_NFS_V3
-struct inode_operations nfs3_file_inode_operations = {
+const struct inode_operations nfs3_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 371b804e7cc..7f86e65182e 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -155,12 +155,12 @@ out_follow:
 	goto out;
 }
 
-struct inode_operations nfs_mountpoint_inode_operations = {
+const struct inode_operations nfs_mountpoint_inode_operations = {
 	.follow_link	= nfs_follow_mountpoint,
 	.getattr	= nfs_getattr,
 };
 
-struct inode_operations nfs_referral_inode_operations = {
+const struct inode_operations nfs_referral_inode_operations = {
 	.follow_link	= nfs_follow_mountpoint,
 };
 
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index c26cd978c7c..e2341766c4f 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -151,7 +151,7 @@ struct nfs4_state_recovery_ops {
 };
 
 extern struct dentry_operations nfs4_dentry_operations;
-extern struct inode_operations nfs4_dir_inode_operations;
+extern const struct inode_operations nfs4_dir_inode_operations;
 
 /* inode.c */
 extern ssize_t nfs4_getxattr(struct dentry *, const char *, void *, size_t);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index b3fd29baadc..1daee65b517 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3625,7 +3625,7 @@ struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = {
 	.recover_lock	= nfs4_lock_expired,
 };
 
-static struct inode_operations nfs4_file_inode_operations = {
+static const struct inode_operations nfs4_file_inode_operations = {
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 525c136c7d8..f4a0548b9ce 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -78,7 +78,7 @@ read_failed:
 /*
  * symlinks can't do much...
  */
-struct inode_operations nfs_symlink_inode_operations = {
+const struct inode_operations nfs_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= nfs_follow_link,
 	.put_link	= page_put_link,
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 076c9420c25..d69c4595ccd 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2328,7 +2328,7 @@ const struct file_operations ntfs_file_ops = {
 						    the data source. */
 };
 
-struct inode_operations ntfs_file_inode_ops = {
+const struct inode_operations ntfs_file_inode_ops = {
 #ifdef NTFS_RW
 	.truncate	= ntfs_truncate_vfs,
 	.setattr	= ntfs_setattr,
@@ -2337,4 +2337,4 @@ struct inode_operations ntfs_file_inode_ops = {
 
 const struct file_operations ntfs_empty_file_ops = {};
 
-struct inode_operations ntfs_empty_inode_ops = {};
+const struct inode_operations ntfs_empty_inode_ops = {};
diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c
index eddb2247cec..bff01a54675 100644
--- a/fs/ntfs/namei.c
+++ b/fs/ntfs/namei.c
@@ -359,7 +359,7 @@ err_out:
 /**
  * Inode operations for directories.
  */
-struct inode_operations ntfs_dir_inode_ops = {
+const struct inode_operations ntfs_dir_inode_ops = {
 	.lookup	= ntfs_lookup,	/* VFS: Lookup directory. */
 };
 
diff --git a/fs/ntfs/ntfs.h b/fs/ntfs/ntfs.h
index a12847ae467..d73f5a9ac34 100644
--- a/fs/ntfs/ntfs.h
+++ b/fs/ntfs/ntfs.h
@@ -61,13 +61,13 @@ extern const struct address_space_operations ntfs_aops;
 extern const struct address_space_operations ntfs_mst_aops;
 
 extern const struct  file_operations ntfs_file_ops;
-extern struct inode_operations ntfs_file_inode_ops;
+extern const struct inode_operations ntfs_file_inode_ops;
 
 extern const struct  file_operations ntfs_dir_ops;
-extern struct inode_operations ntfs_dir_inode_ops;
+extern const struct inode_operations ntfs_dir_inode_ops;
 
 extern const struct  file_operations ntfs_empty_file_ops;
-extern struct inode_operations ntfs_empty_inode_ops;
+extern const struct inode_operations ntfs_empty_inode_ops;
 
 extern struct export_operations ntfs_export_ops;
 
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index 30826242bf5..84b33ffb42f 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -63,9 +63,9 @@
 
 static struct super_operations dlmfs_ops;
 static const struct file_operations dlmfs_file_operations;
-static struct inode_operations dlmfs_dir_inode_operations;
-static struct inode_operations dlmfs_root_inode_operations;
-static struct inode_operations dlmfs_file_inode_operations;
+static const struct inode_operations dlmfs_dir_inode_operations;
+static const struct inode_operations dlmfs_root_inode_operations;
+static const struct inode_operations dlmfs_file_inode_operations;
 static struct kmem_cache *dlmfs_inode_cache;
 
 struct workqueue_struct *user_dlm_worker;
@@ -547,14 +547,14 @@ static const struct file_operations dlmfs_file_operations = {
 	.write		= dlmfs_file_write,
 };
 
-static struct inode_operations dlmfs_dir_inode_operations = {
+static const struct inode_operations dlmfs_dir_inode_operations = {
 	.create		= dlmfs_create,
 	.lookup		= simple_lookup,
 	.unlink		= dlmfs_unlink,
 };
 
 /* this way we can restrict mkdir to only the toplevel of the fs. */
-static struct inode_operations dlmfs_root_inode_operations = {
+static const struct inode_operations dlmfs_root_inode_operations = {
 	.lookup		= simple_lookup,
 	.mkdir		= dlmfs_mkdir,
 	.rmdir		= simple_rmdir,
@@ -568,7 +568,7 @@ static struct super_operations dlmfs_ops = {
 	.drop_inode	= generic_delete_inode,
 };
 
-static struct inode_operations dlmfs_file_inode_operations = {
+static const struct inode_operations dlmfs_file_inode_operations = {
 	.getattr	= simple_getattr,
 };
 
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 10953a508f2..f2cd3bf9efb 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1365,13 +1365,13 @@ bail:
 	return ret;
 }
 
-struct inode_operations ocfs2_file_iops = {
+const struct inode_operations ocfs2_file_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
 };
 
-struct inode_operations ocfs2_special_file_iops = {
+const struct inode_operations ocfs2_special_file_iops = {
 	.setattr	= ocfs2_setattr,
 	.getattr	= ocfs2_getattr,
 	.permission	= ocfs2_permission,
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 601a453f18a..cc973f01f6c 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -28,8 +28,8 @@
 
 extern const struct file_operations ocfs2_fops;
 extern const struct file_operations ocfs2_dops;
-extern struct inode_operations ocfs2_file_iops;
-extern struct inode_operations ocfs2_special_file_iops;
+extern const struct inode_operations ocfs2_file_iops;
+extern const struct inode_operations ocfs2_special_file_iops;
 struct ocfs2_alloc_context;
 
 enum ocfs2_alloc_restarted {
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index f3d7803b4b4..f7fa52bb3f6 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -2306,7 +2306,7 @@ leave:
 	return status;
 }
 
-struct inode_operations ocfs2_dir_iops = {
+const struct inode_operations ocfs2_dir_iops = {
 	.create		= ocfs2_create,
 	.lookup		= ocfs2_lookup,
 	.link		= ocfs2_link,
diff --git a/fs/ocfs2/namei.h b/fs/ocfs2/namei.h
index 8425944fccc..0975c7b7212 100644
--- a/fs/ocfs2/namei.h
+++ b/fs/ocfs2/namei.h
@@ -26,7 +26,7 @@
 #ifndef OCFS2_NAMEI_H
 #define OCFS2_NAMEI_H
 
-extern struct inode_operations ocfs2_dir_iops;
+extern const struct inode_operations ocfs2_dir_iops;
 
 struct dentry *ocfs2_get_parent(struct dentry *child);
 
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 03b0191534d..40dc1a51f4a 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -170,12 +170,12 @@ bail:
 	return ERR_PTR(status);
 }
 
-struct inode_operations ocfs2_symlink_inode_operations = {
+const struct inode_operations ocfs2_symlink_inode_operations = {
 	.readlink	= page_readlink,
 	.follow_link	= ocfs2_follow_link,
 	.getattr	= ocfs2_getattr,
 };
-struct inode_operations ocfs2_fast_symlink_inode_operations = {
+const struct inode_operations ocfs2_fast_symlink_inode_operations = {
 	.readlink	= ocfs2_readlink,
 	.follow_link	= ocfs2_follow_link,
 	.getattr	= ocfs2_getattr,
diff --git a/fs/ocfs2/symlink.h b/fs/ocfs2/symlink.h
index 1ea9e4d9e9e..65a6c9c6ad5 100644
--- a/fs/ocfs2/symlink.h
+++ b/fs/ocfs2/symlink.h
@@ -26,8 +26,8 @@
 #ifndef OCFS2_SYMLINK_H
 #define OCFS2_SYMLINK_H
 
-extern struct inode_operations ocfs2_symlink_inode_operations;
-extern struct inode_operations ocfs2_fast_symlink_inode_operations;
+extern const struct inode_operations ocfs2_symlink_inode_operations;
+extern const struct inode_operations ocfs2_fast_symlink_inode_operations;
 
 /*
  * Test whether an inode is a fast symlink.
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index 99c0bc37ba0..327807b86fa 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -169,7 +169,7 @@ static const struct file_operations openprom_operations = {
 
 static struct dentry *openpromfs_lookup(struct inode *, struct dentry *, struct nameidata *);
 
-static struct inode_operations openprom_inode_operations = {
+static const struct inode_operations openprom_inode_operations = {
 	.lookup		= openpromfs_lookup,
 };
 
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index fafdef357e9..7a8ce610fda 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -84,7 +84,7 @@ struct mqueue_inode_info {
 	unsigned long qsize; /* size of queue in memory (sum of all msgs) */
 };
 
-static struct inode_operations mqueue_dir_inode_operations;
+static const struct inode_operations mqueue_dir_inode_operations;
 static const struct file_operations mqueue_file_operations;
 static struct super_operations mqueue_super_ops;
 static void remove_notification(struct mqueue_inode_info *info);
@@ -1160,7 +1160,7 @@ out:
 	return ret;
 }
 
-static struct inode_operations mqueue_dir_inode_operations = {
+static const struct inode_operations mqueue_dir_inode_operations = {
 	.lookup = simple_lookup,
 	.create = mqueue_create,
 	.unlink = mqueue_unlink,
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 232aed2b10f..f382b0f775e 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1540,7 +1540,7 @@ static const struct file_operations cpuset_file_operations = {
 	.release = cpuset_file_release,
 };
 
-static struct inode_operations cpuset_dir_inode_operations = {
+static const struct inode_operations cpuset_dir_inode_operations = {
 	.lookup = simple_lookup,
 	.mkdir = cpuset_mkdir,
 	.rmdir = cpuset_rmdir,
diff --git a/mm/shmem.c b/mm/shmem.c
index b38e1716927..882053031aa 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -178,9 +178,9 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages)
 static struct super_operations shmem_ops;
 static const struct address_space_operations shmem_aops;
 static const struct file_operations shmem_file_operations;
-static struct inode_operations shmem_inode_operations;
-static struct inode_operations shmem_dir_inode_operations;
-static struct inode_operations shmem_special_inode_operations;
+static const struct inode_operations shmem_inode_operations;
+static const struct inode_operations shmem_dir_inode_operations;
+static const struct inode_operations shmem_special_inode_operations;
 static struct vm_operations_struct shmem_vm_ops;
 
 static struct backing_dev_info shmem_backing_dev_info  __read_mostly = {
@@ -1410,8 +1410,8 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
 }
 
 #ifdef CONFIG_TMPFS
-static struct inode_operations shmem_symlink_inode_operations;
-static struct inode_operations shmem_symlink_inline_operations;
+static const struct inode_operations shmem_symlink_inode_operations;
+static const struct inode_operations shmem_symlink_inline_operations;
 
 /*
  * Normally tmpfs makes no use of shmem_prepare_write, but it
@@ -1904,12 +1904,12 @@ static void shmem_put_link(struct dentry *dentry, struct nameidata *nd, void *co
 	}
 }
 
-static struct inode_operations shmem_symlink_inline_operations = {
+static const struct inode_operations shmem_symlink_inline_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= shmem_follow_link_inline,
 };
 
-static struct inode_operations shmem_symlink_inode_operations = {
+static const struct inode_operations shmem_symlink_inode_operations = {
 	.truncate	= shmem_truncate,
 	.readlink	= generic_readlink,
 	.follow_link	= shmem_follow_link,
@@ -2335,7 +2335,7 @@ static const struct file_operations shmem_file_operations = {
 #endif
 };
 
-static struct inode_operations shmem_inode_operations = {
+static const struct inode_operations shmem_inode_operations = {
 	.truncate	= shmem_truncate,
 	.setattr	= shmem_notify_change,
 	.truncate_range	= shmem_truncate_range,
@@ -2349,7 +2349,7 @@ static struct inode_operations shmem_inode_operations = {
 
 };
 
-static struct inode_operations shmem_dir_inode_operations = {
+static const struct inode_operations shmem_dir_inode_operations = {
 #ifdef CONFIG_TMPFS
 	.create		= shmem_create,
 	.lookup		= simple_lookup,
@@ -2371,7 +2371,7 @@ static struct inode_operations shmem_dir_inode_operations = {
 #endif
 };
 
-static struct inode_operations shmem_special_inode_operations = {
+static const struct inode_operations shmem_special_inode_operations = {
 #ifdef CONFIG_TMPFS_POSIX_ACL
 	.setattr	= shmem_notify_change,
 	.setxattr	= generic_setxattr,
-- 
cgit v1.2.3-70-g09d2


From ee9b6d61a2a43c5952eb43283f8db284a4e70b8a Mon Sep 17 00:00:00 2001
From: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Date: Mon, 12 Feb 2007 00:55:41 -0800
Subject: [PATCH] Mark struct super_operations const

This patch is inspired by Arjan's "Patch series to mark struct
file_operations and struct inode_operations const".

Compile tested with gcc & sparse.

Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/9p/vfs_super.c             | 4 ++--
 fs/adfs/super.c               | 2 +-
 fs/affs/super.c               | 2 +-
 fs/afs/super.c                | 2 +-
 fs/autofs/inode.c             | 2 +-
 fs/autofs4/inode.c            | 2 +-
 fs/bfs/inode.c                | 2 +-
 fs/binfmt_misc.c              | 2 +-
 fs/block_dev.c                | 2 +-
 fs/cifs/cifsfs.c              | 4 ++--
 fs/cifs/cifsfs.h              | 2 +-
 fs/coda/inode.c               | 2 +-
 fs/configfs/mount.c           | 2 +-
 fs/cramfs/inode.c             | 4 ++--
 fs/devpts/inode.c             | 2 +-
 fs/ecryptfs/ecryptfs_kernel.h | 2 +-
 fs/ecryptfs/super.c           | 2 +-
 fs/efs/super.c                | 2 +-
 fs/ext2/super.c               | 2 +-
 fs/ext3/super.c               | 2 +-
 fs/ext4/super.c               | 2 +-
 fs/fat/inode.c                | 2 +-
 fs/freevxfs/vxfs_super.c      | 2 +-
 fs/fuse/inode.c               | 2 +-
 fs/gfs2/ops_super.c           | 2 +-
 fs/gfs2/ops_super.h           | 2 +-
 fs/hfs/super.c                | 2 +-
 fs/hfsplus/super.c            | 2 +-
 fs/hostfs/hostfs_kern.c       | 2 +-
 fs/hpfs/super.c               | 2 +-
 fs/hppfs/hppfs_kern.c         | 4 ++--
 fs/hugetlbfs/inode.c          | 4 ++--
 fs/inode.c                    | 6 +++---
 fs/isofs/inode.c              | 2 +-
 fs/jffs/inode-v23.c           | 4 ++--
 fs/jffs2/super.c              | 2 +-
 fs/jfs/super.c                | 4 ++--
 fs/libfs.c                    | 4 ++--
 fs/minix/inode.c              | 2 +-
 fs/ncpfs/inode.c              | 2 +-
 fs/nfs/super.c                | 4 ++--
 fs/ntfs/super.c               | 2 +-
 fs/ocfs2/dlm/dlmfs.c          | 4 ++--
 fs/ocfs2/super.c              | 2 +-
 fs/openpromfs/inode.c         | 2 +-
 fs/proc/inode.c               | 2 +-
 fs/qnx4/inode.c               | 4 ++--
 fs/ramfs/inode.c              | 4 ++--
 fs/reiserfs/super.c           | 2 +-
 fs/romfs/inode.c              | 4 ++--
 fs/smbfs/inode.c              | 2 +-
 fs/super.c                    | 2 +-
 fs/sysfs/mount.c              | 2 +-
 fs/sysv/inode.c               | 2 +-
 fs/sysv/sysv.h                | 2 +-
 fs/udf/super.c                | 2 +-
 fs/ufs/super.c                | 4 ++--
 include/linux/fs.h            | 4 ++--
 58 files changed, 75 insertions(+), 75 deletions(-)

(limited to 'fs/minix')

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 63320d4e15d..0ec42f66545 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -45,7 +45,7 @@
 #include "fid.h"
 
 static void v9fs_clear_inode(struct inode *);
-static struct super_operations v9fs_super_ops;
+static const struct super_operations v9fs_super_ops;
 
 /**
  * v9fs_clear_inode - release an inode
@@ -263,7 +263,7 @@ v9fs_umount_begin(struct vfsmount *vfsmnt, int flags)
 		v9fs_session_cancel(v9ses);
 }
 
-static struct super_operations v9fs_super_ops = {
+static const struct super_operations v9fs_super_ops = {
 	.statfs = simple_statfs,
 	.clear_inode = v9fs_clear_inode,
 	.show_options = v9fs_show_options,
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 5023351a7af..2e5f2c8371e 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -254,7 +254,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(adfs_inode_cachep);
 }
 
-static struct super_operations adfs_sops = {
+static const struct super_operations adfs_sops = {
 	.alloc_inode	= adfs_alloc_inode,
 	.destroy_inode	= adfs_destroy_inode,
 	.write_inode	= adfs_write_inode,
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 3de93e79994..a324045d855 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -112,7 +112,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(affs_inode_cachep);
 }
 
-static struct super_operations affs_sops = {
+static const struct super_operations affs_sops = {
 	.alloc_inode	= affs_alloc_inode,
 	.destroy_inode	= affs_destroy_inode,
 	.read_inode	= affs_read_inode,
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 18d9b77ba40..eb7e32349da 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -56,7 +56,7 @@ struct file_system_type afs_fs_type = {
 	.fs_flags	= FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations afs_super_ops = {
+static const struct super_operations afs_super_ops = {
 	.statfs		= simple_statfs,
 	.alloc_inode	= afs_alloc_inode,
 	.drop_inode	= generic_delete_inode,
diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c
index f968d134280..aa0b61ff827 100644
--- a/fs/autofs/inode.c
+++ b/fs/autofs/inode.c
@@ -52,7 +52,7 @@ out_kill_sb:
 
 static void autofs_read_inode(struct inode *inode);
 
-static struct super_operations autofs_sops = {
+static const struct super_operations autofs_sops = {
 	.read_inode	= autofs_read_inode,
 	.statfs		= simple_statfs,
 };
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index e8f6c5ad3e9..5e458e096ef 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -196,7 +196,7 @@ static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
 	return 0;
 }
 
-static struct super_operations autofs4_sops = {
+static const struct super_operations autofs4_sops = {
 	.statfs		= simple_statfs,
 	.show_options	= autofs4_show_options,
 };
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 134c99941a6..93d6219243a 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -270,7 +270,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(bfs_inode_cachep);
 }
 
-static struct super_operations bfs_sops = {
+static const struct super_operations bfs_sops = {
 	.alloc_inode	= bfs_alloc_inode,
 	.destroy_inode	= bfs_destroy_inode,
 	.read_inode	= bfs_read_inode,
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index c2e08252af3..e6f57990b12 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -719,7 +719,7 @@ static const struct file_operations bm_status_operations = {
 
 /* Superblock handling */
 
-static struct super_operations s_ops = {
+static const struct super_operations s_ops = {
 	.statfs		= simple_statfs,
 	.clear_inode	= bm_clear_inode,
 };
diff --git a/fs/block_dev.c b/fs/block_dev.c
index fc7028b685f..0c59b703e9d 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -489,7 +489,7 @@ static void bdev_clear_inode(struct inode *inode)
 	spin_unlock(&bdev_lock);
 }
 
-static struct super_operations bdev_sops = {
+static const struct super_operations bdev_sops = {
 	.statfs = simple_statfs,
 	.alloc_inode = bdev_alloc_inode,
 	.destroy_inode = bdev_destroy_inode,
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 481e84f5f36..e8287c4c6eb 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -64,7 +64,7 @@ extern struct task_struct * oplockThread; /* remove sparse warning */
 struct task_struct * oplockThread = NULL;
 extern struct task_struct * dnotifyThread; /* remove sparse warning */
 struct task_struct * dnotifyThread = NULL;
-static struct super_operations cifs_super_ops; 
+static const struct super_operations cifs_super_ops;
 unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
 module_param(CIFSMaxBufSize, int, 0);
 MODULE_PARM_DESC(CIFSMaxBufSize,"Network buffer size (not including header). Default: 16384 Range: 8192 to 130048");
@@ -453,7 +453,7 @@ static int cifs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations cifs_super_ops = {
+static const struct super_operations cifs_super_ops = {
 	.read_inode = cifs_read_inode,
 	.put_super = cifs_put_super,
 	.statfs = cifs_statfs,
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index ab9e20a863f..01ae24af9cf 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -36,7 +36,7 @@ extern const struct address_space_operations cifs_addr_ops;
 extern const struct address_space_operations cifs_addr_ops_smallbuf;
 
 /* Functions related to super block operations */
-/* extern struct super_operations cifs_super_ops;*/
+/* extern const struct super_operations cifs_super_ops;*/
 extern void cifs_read_inode(struct inode *);
 extern void cifs_delete_inode(struct inode *);
 /* extern void cifs_write_inode(struct inode *); *//* BB not needed yet */
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 1562515efdb..614175a3b02 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -90,7 +90,7 @@ static int coda_remount(struct super_block *sb, int *flags, char *data)
 }
 
 /* exported operations */
-static struct super_operations coda_super_operations =
+static const struct super_operations coda_super_operations =
 {
 	.alloc_inode	= coda_alloc_inode,
 	.destroy_inode	= coda_destroy_inode,
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index ed678529ebb..6f573004cd7 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -41,7 +41,7 @@ struct super_block * configfs_sb = NULL;
 struct kmem_cache *configfs_dir_cachep;
 static int configfs_mnt_count = 0;
 
-static struct super_operations configfs_ops = {
+static const struct super_operations configfs_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
 };
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 0367d200a2d..facd0c89be8 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -27,7 +27,7 @@
 
 #include <asm/uaccess.h>
 
-static struct super_operations cramfs_ops;
+static const struct super_operations cramfs_ops;
 static const struct inode_operations cramfs_dir_inode_operations;
 static const struct file_operations cramfs_directory_operations;
 static const struct address_space_operations cramfs_aops;
@@ -522,7 +522,7 @@ static const struct inode_operations cramfs_dir_inode_operations = {
 	.lookup		= cramfs_lookup,
 };
 
-static struct super_operations cramfs_ops = {
+static const struct super_operations cramfs_ops = {
 	.put_super	= cramfs_put_super,
 	.remount_fs	= cramfs_remount,
 	.statfs		= cramfs_statfs,
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 5f7b5a6025b..643e57b622b 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -91,7 +91,7 @@ static int devpts_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations devpts_sops = {
+static const struct super_operations devpts_sops = {
 	.statfs		= simple_statfs,
 	.remount_fs	= devpts_remount,
 };
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 275445d1716..b3609b7cdf1 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -449,7 +449,7 @@ extern const struct file_operations ecryptfs_dir_fops;
 extern const struct inode_operations ecryptfs_main_iops;
 extern const struct inode_operations ecryptfs_dir_iops;
 extern const struct inode_operations ecryptfs_symlink_iops;
-extern struct super_operations ecryptfs_sops;
+extern const struct super_operations ecryptfs_sops;
 extern struct dentry_operations ecryptfs_dops;
 extern struct address_space_operations ecryptfs_aops;
 extern int ecryptfs_verbosity;
diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c
index eaa5daaf106..7b3f0cc09a6 100644
--- a/fs/ecryptfs/super.c
+++ b/fs/ecryptfs/super.c
@@ -168,7 +168,7 @@ out:
 	return rc;
 }
 
-struct super_operations ecryptfs_sops = {
+const struct super_operations ecryptfs_sops = {
 	.alloc_inode = ecryptfs_alloc_inode,
 	.destroy_inode = ecryptfs_destroy_inode,
 	.drop_inode = generic_delete_inode,
diff --git a/fs/efs/super.c b/fs/efs/super.c
index dfebf21289f..c2235e46edc 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -105,7 +105,7 @@ static int efs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations efs_superblock_operations = {
+static const struct super_operations efs_superblock_operations = {
 	.alloc_inode	= efs_alloc_inode,
 	.destroy_inode	= efs_destroy_inode,
 	.read_inode	= efs_read_inode,
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index daaa243eee9..a046a419d8a 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -231,7 +231,7 @@ static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data, siz
 static ssize_t ext2_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off);
 #endif
 
-static struct super_operations ext2_sops = {
+static const struct super_operations ext2_sops = {
 	.alloc_inode	= ext2_alloc_inode,
 	.destroy_inode	= ext2_destroy_inode,
 	.read_inode	= ext2_read_inode,
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index a0623a84a4b..4a4fcd6868c 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -639,7 +639,7 @@ static struct quotactl_ops ext3_qctl_operations = {
 };
 #endif
 
-static struct super_operations ext3_sops = {
+static const struct super_operations ext3_sops = {
 	.alloc_inode	= ext3_alloc_inode,
 	.destroy_inode	= ext3_destroy_inode,
 	.read_inode	= ext3_read_inode,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c63a18b574d..61c4718e4a5 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -690,7 +690,7 @@ static struct quotactl_ops ext4_qctl_operations = {
 };
 #endif
 
-static struct super_operations ext4_sops = {
+static const struct super_operations ext4_sops = {
 	.alloc_inode	= ext4_alloc_inode,
 	.destroy_inode	= ext4_destroy_inode,
 	.read_inode	= ext4_read_inode,
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index f268fec6ed0..76107354421 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -618,7 +618,7 @@ int fat_sync_inode(struct inode *inode)
 EXPORT_SYMBOL_GPL(fat_sync_inode);
 
 static int fat_show_options(struct seq_file *m, struct vfsmount *mnt);
-static struct super_operations fat_sops = {
+static const struct super_operations fat_sops = {
 	.alloc_inode	= fat_alloc_inode,
 	.destroy_inode	= fat_destroy_inode,
 	.write_inode	= fat_write_inode,
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
index ac28b0835ff..647d600f0bc 100644
--- a/fs/freevxfs/vxfs_super.c
+++ b/fs/freevxfs/vxfs_super.c
@@ -59,7 +59,7 @@ static void		vxfs_put_super(struct super_block *);
 static int		vxfs_statfs(struct dentry *, struct kstatfs *);
 static int		vxfs_remount(struct super_block *, int *, char *);
 
-static struct super_operations vxfs_super_ops = {
+static const struct super_operations vxfs_super_ops = {
 	.read_inode =		vxfs_read_inode,
 	.clear_inode =		vxfs_clear_inode,
 	.put_super =		vxfs_put_super,
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 220255110d7..5ab8e50e780 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -446,7 +446,7 @@ static struct inode *get_root_inode(struct super_block *sb, unsigned mode)
 	return fuse_iget(sb, 1, 0, &attr);
 }
 
-static struct super_operations fuse_super_operations = {
+static const struct super_operations fuse_super_operations = {
 	.alloc_inode    = fuse_alloc_inode,
 	.destroy_inode  = fuse_destroy_inode,
 	.read_inode	= fuse_read_inode,
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index 47369d01121..b89999d3a76 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -468,7 +468,7 @@ static void gfs2_destroy_inode(struct inode *inode)
 	kmem_cache_free(gfs2_inode_cachep, inode);
 }
 
-struct super_operations gfs2_super_ops = {
+const struct super_operations gfs2_super_ops = {
 	.alloc_inode		= gfs2_alloc_inode,
 	.destroy_inode		= gfs2_destroy_inode,
 	.write_inode		= gfs2_write_inode,
diff --git a/fs/gfs2/ops_super.h b/fs/gfs2/ops_super.h
index 9de73f042f7..442a274c627 100644
--- a/fs/gfs2/ops_super.h
+++ b/fs/gfs2/ops_super.h
@@ -12,6 +12,6 @@
 
 #include <linux/fs.h>
 
-extern struct super_operations gfs2_super_ops;
+extern const struct super_operations gfs2_super_ops;
 
 #endif /* __OPS_SUPER_DOT_H__ */
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index a3698796600..623f509f1d4 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -154,7 +154,7 @@ static void hfs_destroy_inode(struct inode *inode)
 	kmem_cache_free(hfs_inode_cachep, HFS_I(inode));
 }
 
-static struct super_operations hfs_super_operations = {
+static const struct super_operations hfs_super_operations = {
 	.alloc_inode	= hfs_alloc_inode,
 	.destroy_inode	= hfs_destroy_inode,
 	.write_inode	= hfs_write_inode,
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 0f513c6bf84..5a282f64c63 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -260,7 +260,7 @@ static int hfsplus_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations hfsplus_sops = {
+static const struct super_operations hfsplus_sops = {
 	.alloc_inode	= hfsplus_alloc_inode,
 	.destroy_inode	= hfsplus_destroy_inode,
 	.read_inode	= hfsplus_read_inode,
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index fec208db5e4..e965eb11d76 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -309,7 +309,7 @@ static void hostfs_read_inode(struct inode *inode)
 	read_inode(inode);
 }
 
-static struct super_operations hostfs_sbops = {
+static const struct super_operations hostfs_sbops = {
 	.alloc_inode	= hostfs_alloc_inode,
 	.drop_inode	= generic_delete_inode,
 	.delete_inode   = hostfs_delete_inode,
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index d4abc1a1d56..e0174e33852 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -426,7 +426,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data)
 
 /* Super operations */
 
-static struct super_operations hpfs_sops =
+static const struct super_operations hpfs_sops =
 {
 	.alloc_inode	= hpfs_alloc_inode,
 	.destroy_inode	= hpfs_destroy_inode,
diff --git a/fs/hppfs/hppfs_kern.c b/fs/hppfs/hppfs_kern.c
index bd711681631..affb7412125 100644
--- a/fs/hppfs/hppfs_kern.c
+++ b/fs/hppfs/hppfs_kern.c
@@ -43,7 +43,7 @@ static inline struct hppfs_inode_info *HPPFS_I(struct inode *inode)
 
 #define HPPFS_SUPER_MAGIC 0xb00000ee
 
-static struct super_operations hppfs_sbops;
+static const struct super_operations hppfs_sbops;
 
 static int is_pid(struct dentry *dentry)
 {
@@ -649,7 +649,7 @@ static void hppfs_destroy_inode(struct inode *inode)
 	kfree(HPPFS_I(inode));
 }
 
-static struct super_operations hppfs_sbops = {
+static const struct super_operations hppfs_sbops = {
 	.alloc_inode	= hppfs_alloc_inode,
 	.destroy_inode	= hppfs_destroy_inode,
 	.read_inode	= hppfs_read_inode,
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 26ba81fc7fa..8c718a3d413 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -33,7 +33,7 @@
 /* some random number */
 #define HUGETLBFS_MAGIC	0x958458f6
 
-static struct super_operations hugetlbfs_ops;
+static const struct super_operations hugetlbfs_ops;
 static const struct address_space_operations hugetlbfs_aops;
 const struct file_operations hugetlbfs_file_operations;
 static const struct inode_operations hugetlbfs_dir_inode_operations;
@@ -580,7 +580,7 @@ static const struct inode_operations hugetlbfs_inode_operations = {
 	.setattr	= hugetlbfs_setattr,
 };
 
-static struct super_operations hugetlbfs_ops = {
+static const struct super_operations hugetlbfs_ops = {
 	.alloc_inode    = hugetlbfs_alloc_inode,
 	.destroy_inode  = hugetlbfs_destroy_inode,
 	.statfs		= hugetlbfs_statfs,
diff --git a/fs/inode.c b/fs/inode.c
index 5e32432a760..5abb097ab1b 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1000,7 +1000,7 @@ EXPORT_SYMBOL(remove_inode_hash);
  */
 void generic_delete_inode(struct inode *inode)
 {
-	struct super_operations *op = inode->i_sb->s_op;
+	const struct super_operations *op = inode->i_sb->s_op;
 
 	list_del_init(&inode->i_list);
 	list_del_init(&inode->i_sb_list);
@@ -1093,7 +1093,7 @@ EXPORT_SYMBOL_GPL(generic_drop_inode);
  */
 static inline void iput_final(struct inode *inode)
 {
-	struct super_operations *op = inode->i_sb->s_op;
+	const struct super_operations *op = inode->i_sb->s_op;
 	void (*drop)(struct inode *) = generic_drop_inode;
 
 	if (op && op->drop_inode)
@@ -1113,7 +1113,7 @@ static inline void iput_final(struct inode *inode)
 void iput(struct inode *inode)
 {
 	if (inode) {
-		struct super_operations *op = inode->i_sb->s_op;
+		const struct super_operations *op = inode->i_sb->s_op;
 
 		BUG_ON(inode->i_state == I_CLEAR);
 
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index ea55b6c469e..64a96cdfe3a 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -106,7 +106,7 @@ static int isofs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations isofs_sops = {
+static const struct super_operations isofs_sops = {
 	.alloc_inode	= isofs_alloc_inode,
 	.destroy_inode	= isofs_destroy_inode,
 	.read_inode	= isofs_read_inode,
diff --git a/fs/jffs/inode-v23.c b/fs/jffs/inode-v23.c
index fe3347defe6..9602b925da0 100644
--- a/fs/jffs/inode-v23.c
+++ b/fs/jffs/inode-v23.c
@@ -54,7 +54,7 @@
 
 static int jffs_remove(struct inode *dir, struct dentry *dentry, int type);
 
-static struct super_operations jffs_ops;
+static const struct super_operations jffs_ops;
 static const struct file_operations jffs_file_operations;
 static const struct inode_operations jffs_file_inode_operations;
 static const struct file_operations jffs_dir_operations;
@@ -1774,7 +1774,7 @@ static int jffs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations jffs_ops =
+static const struct super_operations jffs_ops =
 {
 	.read_inode	= jffs_read_inode,
 	.delete_inode 	= jffs_delete_inode,
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 08a0e6c49e6..cc7e8e71ad4 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -66,7 +66,7 @@ static int jffs2_sync_fs(struct super_block *sb, int wait)
 	return 0;
 }
 
-static struct super_operations jffs2_super_operations =
+static const struct super_operations jffs2_super_operations =
 {
 	.alloc_inode =	jffs2_alloc_inode,
 	.destroy_inode =jffs2_destroy_inode,
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 846ac8f3451..52d73d54a93 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -46,7 +46,7 @@ MODULE_LICENSE("GPL");
 
 static struct kmem_cache * jfs_inode_cachep;
 
-static struct super_operations jfs_super_operations;
+static const struct super_operations jfs_super_operations;
 static struct export_operations jfs_export_operations;
 static struct file_system_type jfs_fs_type;
 
@@ -716,7 +716,7 @@ out:
 
 #endif
 
-static struct super_operations jfs_super_operations = {
+static const struct super_operations jfs_super_operations = {
 	.alloc_inode	= jfs_alloc_inode,
 	.destroy_inode	= jfs_destroy_inode,
 	.read_inode	= jfs_read_inode,
diff --git a/fs/libfs.c b/fs/libfs.c
index 0f4ee02e0b1..7d487047dbb 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -195,11 +195,11 @@ const struct inode_operations simple_dir_inode_operations = {
  * will never be mountable)
  */
 int get_sb_pseudo(struct file_system_type *fs_type, char *name,
-	struct super_operations *ops, unsigned long magic,
+	const struct super_operations *ops, unsigned long magic,
 	struct vfsmount *mnt)
 {
 	struct super_block *s = sget(fs_type, NULL, set_anon_super, NULL);
-	static struct super_operations default_ops = {.statfs = simple_statfs};
+	static const struct super_operations default_ops = {.statfs = simple_statfs};
 	struct dentry *dentry;
 	struct inode *root;
 	struct qstr d_name = {.name = name, .len = strlen(name)};
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index e56822bff94..92e383af370 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -95,7 +95,7 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(minix_inode_cachep);
 }
 
-static struct super_operations minix_sops = {
+static const struct super_operations minix_sops = {
 	.alloc_inode	= minix_alloc_inode,
 	.destroy_inode	= minix_destroy_inode,
 	.read_inode	= minix_read_inode,
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 730433f3d23..14939ddf74f 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -90,7 +90,7 @@ static int ncp_remount(struct super_block *sb, int *flags, char* data)
 	return 0;
 }
 
-static struct super_operations ncp_sops =
+static const struct super_operations ncp_sops =
 {
 	.alloc_inode	= ncp_alloc_inode,
 	.destroy_inode	= ncp_destroy_inode,
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 76b98009762..baa28860ad2 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -82,7 +82,7 @@ struct file_system_type nfs_xdev_fs_type = {
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs_sops = {
+static const struct super_operations nfs_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
@@ -126,7 +126,7 @@ struct file_system_type nfs4_referral_fs_type = {
 	.fs_flags	= FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
 
-static struct super_operations nfs4_sops = {
+static const struct super_operations nfs4_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index babf94d90de..1594c90b716 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -2699,7 +2699,7 @@ static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs)
 /**
  * The complete super operations.
  */
-static struct super_operations ntfs_sops = {
+static const struct super_operations ntfs_sops = {
 	.alloc_inode	= ntfs_alloc_big_inode,	  /* VFS: Allocate new inode. */
 	.destroy_inode	= ntfs_destroy_big_inode, /* VFS: Deallocate inode. */
 #ifdef NTFS_RW
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index 84b33ffb42f..de952eba29a 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -61,7 +61,7 @@
 #define MLOG_MASK_PREFIX ML_DLMFS
 #include "cluster/masklog.h"
 
-static struct super_operations dlmfs_ops;
+static const struct super_operations dlmfs_ops;
 static const struct file_operations dlmfs_file_operations;
 static const struct inode_operations dlmfs_dir_inode_operations;
 static const struct inode_operations dlmfs_root_inode_operations;
@@ -560,7 +560,7 @@ static const struct inode_operations dlmfs_root_inode_operations = {
 	.rmdir		= simple_rmdir,
 };
 
-static struct super_operations dlmfs_ops = {
+static const struct super_operations dlmfs_ops = {
 	.statfs		= simple_statfs,
 	.alloc_inode	= dlmfs_alloc_inode,
 	.destroy_inode	= dlmfs_destroy_inode,
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 6e300a88a47..6534f92424d 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -116,7 +116,7 @@ static void ocfs2_destroy_inode(struct inode *inode);
 
 static unsigned long long ocfs2_max_file_offset(unsigned int blockshift);
 
-static struct super_operations ocfs2_sops = {
+static const struct super_operations ocfs2_sops = {
 	.statfs		= ocfs2_statfs,
 	.alloc_inode	= ocfs2_alloc_inode,
 	.destroy_inode	= ocfs2_destroy_inode,
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index 327807b86fa..bde1c164417 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -364,7 +364,7 @@ static int openprom_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations openprom_sops = { 
+static const struct super_operations openprom_sops = {
 	.alloc_inode	= openprom_alloc_inode,
 	.destroy_inode	= openprom_destroy_inode,
 	.read_inode	= openprom_read_inode,
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index e26945ba685..f6722be37dd 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -132,7 +132,7 @@ static int proc_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations proc_sops = { 
+static const struct super_operations proc_sops = {
 	.alloc_inode	= proc_alloc_inode,
 	.destroy_inode	= proc_destroy_inode,
 	.read_inode	= proc_read_inode,
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index c047dc654d5..83bc8e7824c 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -30,7 +30,7 @@
 #define QNX4_VERSION  4
 #define QNX4_BMNAME   ".bitmap"
 
-static struct super_operations qnx4_sops;
+static const struct super_operations qnx4_sops;
 
 #ifdef CONFIG_QNX4FS_RW
 
@@ -129,7 +129,7 @@ static void qnx4_read_inode(struct inode *);
 static int qnx4_remount(struct super_block *sb, int *flags, char *data);
 static int qnx4_statfs(struct dentry *, struct kstatfs *);
 
-static struct super_operations qnx4_sops =
+static const struct super_operations qnx4_sops =
 {
 	.alloc_inode	= qnx4_alloc_inode,
 	.destroy_inode	= qnx4_destroy_inode,
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 7a96b1d662a..ff1f7639707 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -40,7 +40,7 @@
 /* some random number */
 #define RAMFS_MAGIC	0x858458f6
 
-static struct super_operations ramfs_ops;
+static const struct super_operations ramfs_ops;
 static const struct inode_operations ramfs_dir_inode_operations;
 
 static struct backing_dev_info ramfs_backing_dev_info = {
@@ -155,7 +155,7 @@ static const struct inode_operations ramfs_dir_inode_operations = {
 	.rename		= simple_rename,
 };
 
-static struct super_operations ramfs_ops = {
+static const struct super_operations ramfs_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
 };
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 58ad4551a7c..f13a7f164dc 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -593,7 +593,7 @@ static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t,
 				   loff_t);
 #endif
 
-static struct super_operations reiserfs_sops = {
+static const struct super_operations reiserfs_sops = {
 	.alloc_inode = reiserfs_alloc_inode,
 	.destroy_inode = reiserfs_destroy_inode,
 	.write_inode = reiserfs_write_inode,
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index 1e712cc1693..fd601014813 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -110,7 +110,7 @@ romfs_checksum(void *data, int size)
 	return sum;
 }
 
-static struct super_operations romfs_ops;
+static const struct super_operations romfs_ops;
 
 static int romfs_fill_super(struct super_block *s, void *data, int silent)
 {
@@ -598,7 +598,7 @@ static int romfs_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations romfs_ops = {
+static const struct super_operations romfs_ops = {
 	.alloc_inode	= romfs_alloc_inode,
 	.destroy_inode	= romfs_destroy_inode,
 	.read_inode	= romfs_read_inode,
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 84dfe3f3482..5faba4f1c9a 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -98,7 +98,7 @@ static int smb_remount(struct super_block *sb, int *flags, char *data)
 	return 0;
 }
 
-static struct super_operations smb_sops =
+static const struct super_operations smb_sops =
 {
 	.alloc_inode	= smb_alloc_inode,
 	.destroy_inode	= smb_destroy_inode,
diff --git a/fs/super.c b/fs/super.c
index 3e7458c2bb7..60b1e50cbf5 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -285,7 +285,7 @@ int fsync_super(struct super_block *sb)
  */
 void generic_shutdown_super(struct super_block *sb)
 {
-	struct super_operations *sop = sb->s_op;
+	const struct super_operations *sop = sb->s_op;
 
 	if (sb->s_root) {
 		shrink_dcache_for_umount(sb);
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index f6a87a82488..23a48a38e6a 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -21,7 +21,7 @@ struct kmem_cache *sysfs_dir_cachep;
 
 static void sysfs_clear_inode(struct inode *inode);
 
-static struct super_operations sysfs_ops = {
+static const struct super_operations sysfs_ops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= sysfs_delete_inode,
 	.clear_inode	= sysfs_clear_inode,
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index 13dd75c4bc8..9311cac186f 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -327,7 +327,7 @@ static void init_once(void *p, struct kmem_cache *cachep, unsigned long flags)
 		inode_init_once(&si->vfs_inode);
 }
 
-struct super_operations sysv_sops = {
+const struct super_operations sysv_sops = {
 	.alloc_inode	= sysv_alloc_inode,
 	.destroy_inode	= sysv_destroy_inode,
 	.read_inode	= sysv_read_inode,
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index a320edcf541..5b4fedf17cc 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -165,7 +165,7 @@ extern const struct inode_operations sysv_fast_symlink_inode_operations;
 extern const struct file_operations sysv_file_operations;
 extern const struct file_operations sysv_dir_operations;
 extern const struct address_space_operations sysv_aops;
-extern struct super_operations sysv_sops;
+extern const struct super_operations sysv_sops;
 extern struct dentry_operations sysv_dentry_operations;
 
 
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 1dbc2955f02..8672b88f7ff 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -160,7 +160,7 @@ static void destroy_inodecache(void)
 }
 
 /* Superblock operations */
-static struct super_operations udf_sb_ops = {
+static const struct super_operations udf_sb_ops = {
 	.alloc_inode		= udf_alloc_inode,
 	.destroy_inode		= udf_destroy_inode,
 	.write_inode		= udf_write_inode,
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index cf74548aa85..b5a6461ec66 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -213,7 +213,7 @@ static void ufs_print_cylinder_stuff(struct super_block *sb,
 #  define ufs_print_cylinder_stuff(sb, cg) /**/
 #endif /* CONFIG_UFS_DEBUG */
 
-static struct super_operations ufs_super_ops;
+static const struct super_operations ufs_super_ops;
 
 static char error_buf[1024];
 
@@ -1264,7 +1264,7 @@ static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
 static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
 #endif
 
-static struct super_operations ufs_super_ops = {
+static const struct super_operations ufs_super_ops = {
 	.alloc_inode	= ufs_alloc_inode,
 	.destroy_inode	= ufs_destroy_inode,
 	.read_inode	= ufs_read_inode,
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bab891bb227..86ec3f4a7da 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -907,7 +907,7 @@ struct super_block {
 	unsigned char		s_dirt;
 	unsigned long long	s_maxbytes;	/* Max file size */
 	struct file_system_type	*s_type;
-	struct super_operations	*s_op;
+	const struct super_operations	*s_op;
 	struct dquot_operations	*dq_op;
  	struct quotactl_ops	*s_qcop;
 	struct export_operations *s_export_op;
@@ -1383,7 +1383,7 @@ struct super_block *sget(struct file_system_type *type,
 			int (*set)(struct super_block *,void *),
 			void *data);
 extern int get_sb_pseudo(struct file_system_type *, char *,
-	struct super_operations *ops, unsigned long,
+	const struct super_operations *ops, unsigned long,
 	struct vfsmount *mnt);
 extern int simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
 int __put_super(struct super_block *sb);
-- 
cgit v1.2.3-70-g09d2