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-rw-r--r--fs/minix/dir.c49
-rw-r--r--fs/minix/inode.c23
-rw-r--r--fs/minix/minix.h3
3 files changed, 53 insertions, 22 deletions
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index e207cbe7095..f70433816a3 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -9,8 +9,10 @@
*/
#include "minix.h"
+#include <linux/buffer_head.h>
#include <linux/highmem.h>
#include <linux/smp_lock.h>
+#include <linux/swap.h>
typedef struct minix_dir_entry minix_dirent;
typedef struct minix3_dir_entry minix3_dirent;
@@ -48,11 +50,17 @@ static inline unsigned long dir_pages(struct inode *inode)
return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
}
-static int dir_commit_chunk(struct page *page, unsigned from, unsigned to)
+static int dir_commit_chunk(struct page *page, loff_t pos, unsigned len)
{
- struct inode *dir = (struct inode *)page->mapping->host;
+ struct address_space *mapping = page->mapping;
+ struct inode *dir = mapping->host;
int err = 0;
- page->mapping->a_ops->commit_write(NULL, page, from, to);
+ block_write_end(NULL, mapping, pos, len, len, page, NULL);
+
+ if (pos+len > dir->i_size) {
+ i_size_write(dir, pos+len);
+ mark_inode_dirty(dir);
+ }
if (IS_DIRSYNC(dir))
err = write_one_page(page, 1);
else
@@ -220,7 +228,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
char *kaddr, *p;
minix_dirent *de;
minix3_dirent *de3;
- unsigned from, to;
+ loff_t pos;
int err;
char *namx = NULL;
__u32 inumber;
@@ -272,9 +280,9 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
return -EINVAL;
got_it:
- from = p - (char*)page_address(page);
- to = from + sbi->s_dirsize;
- err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+ pos = (page->index >> PAGE_CACHE_SHIFT) + p - (char*)page_address(page);
+ err = __minix_write_begin(NULL, page->mapping, pos, sbi->s_dirsize,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err)
goto out_unlock;
memcpy (namx, name, namelen);
@@ -285,7 +293,7 @@ got_it:
memset (namx + namelen, 0, sbi->s_dirsize - namelen - 2);
de->inode = inode->i_ino;
}
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, sbi->s_dirsize);
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(dir);
out_put:
@@ -302,15 +310,16 @@ int minix_delete_entry(struct minix_dir_entry *de, struct page *page)
struct address_space *mapping = page->mapping;
struct inode *inode = (struct inode*)mapping->host;
char *kaddr = page_address(page);
- unsigned from = (char*)de - kaddr;
- unsigned to = from + minix_sb(inode->i_sb)->s_dirsize;
+ loff_t pos = page_offset(page) + (char*)de - kaddr;
+ unsigned len = minix_sb(inode->i_sb)->s_dirsize;
int err;
lock_page(page);
- err = mapping->a_ops->prepare_write(NULL, page, from, to);
+ err = __minix_write_begin(NULL, mapping, pos, len,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err == 0) {
de->inode = 0;
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, len);
} else {
unlock_page(page);
}
@@ -330,7 +339,8 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
if (!page)
return -ENOMEM;
- err = mapping->a_ops->prepare_write(NULL, page, 0, 2 * sbi->s_dirsize);
+ err = __minix_write_begin(NULL, mapping, 0, 2 * sbi->s_dirsize,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err) {
unlock_page(page);
goto fail;
@@ -421,17 +431,20 @@ not_empty:
void minix_set_link(struct minix_dir_entry *de, struct page *page,
struct inode *inode)
{
- struct inode *dir = (struct inode*)page->mapping->host;
+ struct address_space *mapping = page->mapping;
+ struct inode *dir = mapping->host;
struct minix_sb_info *sbi = minix_sb(dir->i_sb);
- unsigned from = (char *)de-(char*)page_address(page);
- unsigned to = from + sbi->s_dirsize;
+ loff_t pos = page_offset(page) +
+ (char *)de-(char*)page_address(page);
int err;
lock_page(page);
- err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+
+ err = __minix_write_begin(NULL, mapping, pos, sbi->s_dirsize,
+ AOP_FLAG_UNINTERRUPTIBLE, &page, NULL);
if (err == 0) {
de->inode = inode->i_ino;
- err = dir_commit_chunk(page, from, to);
+ err = dir_commit_chunk(page, pos, sbi->s_dirsize);
} else {
unlock_page(page);
}
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 43668d7d668..f4f3343b180 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -346,24 +346,39 @@ static int minix_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page, minix_get_block, wbc);
}
+
static int minix_readpage(struct file *file, struct page *page)
{
return block_read_full_page(page,minix_get_block);
}
-static int minix_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
+
+int __minix_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
- return block_prepare_write(page,from,to,minix_get_block);
+ return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ minix_get_block);
}
+
+static int minix_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
+{
+ *pagep = NULL;
+ return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
+}
+
static sector_t minix_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping,block,minix_get_block);
}
+
static const struct address_space_operations minix_aops = {
.readpage = minix_readpage,
.writepage = minix_writepage,
.sync_page = block_sync_page,
- .prepare_write = minix_prepare_write,
- .commit_write = generic_commit_write,
+ .write_begin = minix_write_begin,
+ .write_end = generic_write_end,
.bmap = minix_bmap
};
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index 73ef84f8fb0..ac5d3a75cb0 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -54,6 +54,9 @@ extern int minix_new_block(struct inode * inode);
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 int __minix_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata);
extern void V1_minix_truncate(struct inode *);
extern void V2_minix_truncate(struct inode *);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 23:29:19 +0000