Merge ../linux-2.6

Conflicts:

	arch/ia64/hp/sim/simscsi.c

Stylistic differences in two separate fixes for buffer->request_buffer
problem.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

34 files changed, 194 insertions, 110 deletions

diff --git a/fs/9p/conv.c b/fs/9p/conv.c
index 1e898144eb7..56d88c1a09c 100644
--- a/fs/9p/conv.c
+++ b/fs/9p/conv.c
@@ -673,8 +673,10 @@ struct v9fs_fcall *v9fs_create_tcreate(u32 fid, char *name, u32 perm, u8 mode,
 	struct cbuf *bufp = &buffer;
 
 	size = 4 + 2 + strlen(name) + 4 + 1;	/* fid[4] name[s] perm[4] mode[1] */
-	if (extended && extension!=NULL)
-		size += 2 + strlen(extension);	/* extension[s] */
+	if (extended) {
+		size += 2 +			/* extension[s] */
+		    (extension == NULL ? 0 : strlen(extension));
+	}
 
 	fc = v9fs_create_common(bufp, size, TCREATE);
 	if (IS_ERR(fc))
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 2f580a197b8..eae50c9d6dc 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -434,11 +434,11 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
 	result = v9fs_t_remove(v9ses, fid, &fcall);
 	if (result < 0) {
 		PRINT_FCALL_ERROR("remove fails", fcall);
-	} else {
-		v9fs_put_idpool(fid, &v9ses->fidpool);
-		v9fs_fid_destroy(v9fid);
 	}
 
+	v9fs_put_idpool(fid, &v9ses->fidpool);
+	v9fs_fid_destroy(v9fid);
+
 	kfree(fcall);
 	return result;
 }
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index fcaeead9696..50cfca5c7ef 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -512,7 +512,11 @@ befs_utf2nls(struct super_block *sb, const char *in,
 	wchar_t uni;
 	int unilen, utflen;
 	char *result;
-	int maxlen = in_len; /* The utf8->nls conversion can't make more chars */
+	/* The utf8->nls conversion won't make the final nls string bigger
+	 * than the utf one, but if the string is pure ascii they'll have the
+	 * same width and an extra char is needed to save the additional \0
+	 */
+	int maxlen = in_len + 1;
 
 	befs_debug(sb, "---> utf2nls()");
 
@@ -588,7 +592,10 @@ befs_nls2utf(struct super_block *sb, const char *in,
 	wchar_t uni;
 	int unilen, utflen;
 	char *result;
-	int maxlen = 3 * in_len;
+	/* There're nls characters that will translate to 3-chars-wide UTF-8
+	 * characters, a additional byte is needed to save the final \0
+	 * in special cases */
+	int maxlen = (3 * in_len) + 1;
 
 	befs_debug(sb, "---> nls2utf()\n");
 
diff --git a/fs/buffer.c b/fs/buffer.c
index 3660dcb9759..71649ef9b65 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -470,13 +470,18 @@ out:
    pass does the actual I/O. */
 void invalidate_bdev(struct block_device *bdev, int destroy_dirty_buffers)
 {
+	struct address_space *mapping = bdev->bd_inode->i_mapping;
+
+	if (mapping->nrpages == 0)
+		return;
+
 	invalidate_bh_lrus();
 	/*
 	 * FIXME: what about destroy_dirty_buffers?
 	 * We really want to use invalidate_inode_pages2() for
 	 * that, but not until that's cleaned up.
 	 */
-	invalidate_inode_pages(bdev->bd_inode->i_mapping);
+	invalidate_inode_pages(mapping);
 }
 
 /*
diff --git a/fs/coda/file.c b/fs/coda/file.c
index cc66c681bd1..dbfbcfa5b3c 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -136,10 +136,8 @@ int coda_open(struct inode *coda_inode, struct file *coda_file)
 	coda_vfs_stat.open++;
 
 	cfi = kmalloc(sizeof(struct coda_file_info), GFP_KERNEL);
-	if (!cfi) {
-		unlock_kernel();
+	if (!cfi)
 		return -ENOMEM;
-	}
 
 	lock_kernel();
 
diff --git a/fs/efs/symlink.c b/fs/efs/symlink.c
index e249cf733a6..1d30d2ff440 100644
--- a/fs/efs/symlink.c
+++ b/fs/efs/symlink.c
@@ -22,7 +22,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
   
 	err = -ENAMETOOLONG;
 	if (size > 2 * EFS_BLOCKSIZE)
-		goto fail;
+		goto fail_notlocked;
   
 	lock_kernel();
 	/* read first 512 bytes of link target */
@@ -47,6 +47,7 @@ static int efs_symlink_readpage(struct file *file, struct page *page)
 	return 0;
 fail:
 	unlock_kernel();
+fail_notlocked:
 	SetPageError(page);
 	kunmap(page);
 	unlock_page(page);
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index f804d5e9d60..c5ee9f0691e 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1158,7 +1158,7 @@ retry:
 		ret = PTR_ERR(handle);
 		goto out;
 	}
-	if (test_opt(inode->i_sb, NOBH))
+	if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
 		ret = nobh_prepare_write(page, from, to, ext3_get_block);
 	else
 		ret = block_prepare_write(page, from, to, ext3_get_block);
@@ -1244,7 +1244,7 @@ static int ext3_writeback_commit_write(struct file *file, struct page *page,
 	if (new_i_size > EXT3_I(inode)->i_disksize)
 		EXT3_I(inode)->i_disksize = new_i_size;
 
-	if (test_opt(inode->i_sb, NOBH))
+	if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
 		ret = nobh_commit_write(file, page, from, to);
 	else
 		ret = generic_commit_write(file, page, from, to);
@@ -1494,7 +1494,7 @@ static int ext3_writeback_writepage(struct page *page,
 		goto out_fail;
 	}
 
-	if (test_opt(inode->i_sb, NOBH))
+	if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
 		ret = nobh_writepage(page, ext3_get_block, wbc);
 	else
 		ret = block_write_full_page(page, ext3_get_block, wbc);
@@ -2402,14 +2402,15 @@ static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
 	struct buffer_head *bh;
 	struct ext3_group_desc * gdp;
 
-
-	if ((ino != EXT3_ROOT_INO && ino != EXT3_JOURNAL_INO &&
-		ino != EXT3_RESIZE_INO && ino < EXT3_FIRST_INO(sb)) ||
-		ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) {
-		ext3_error(sb, "ext3_get_inode_block",
-			    "bad inode number: %lu", ino);
+	if (!ext3_valid_inum(sb, ino)) {
+		/*
+		 * This error is already checked for in namei.c unless we are
+		 * looking at an NFS filehandle, in which case no error
+		 * report is needed
+		 */
 		return 0;
 	}
+
 	block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
 	if (block_group >= EXT3_SB(sb)->s_groups_count) {
 		ext3_error(sb,"ext3_get_inode_block","group >= groups count");
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index d9176dba369..2aa7101b27c 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1000,7 +1000,12 @@ static struct dentry *ext3_lookup(struct inode * dir, struct dentry *dentry, str
 	if (bh) {
 		unsigned long ino = le32_to_cpu(de->inode);
 		brelse (bh);
-		inode = iget(dir->i_sb, ino);
+		if (!ext3_valid_inum(dir->i_sb, ino)) {
+			ext3_error(dir->i_sb, "ext3_lookup",
+				   "bad inode number: %lu", ino);
+			inode = NULL;
+		} else
+			inode = iget(dir->i_sb, ino);
 
 		if (!inode)
 			return ERR_PTR(-EACCES);
@@ -1028,7 +1033,13 @@ struct dentry *ext3_get_parent(struct dentry *child)
 		return ERR_PTR(-ENOENT);
 	ino = le32_to_cpu(de->inode);
 	brelse(bh);
-	inode = iget(child->d_inode->i_sb, ino);
+
+	if (!ext3_valid_inum(child->d_inode->i_sb, ino)) {
+		ext3_error(child->d_inode->i_sb, "ext3_get_parent",
+			   "bad inode number: %lu", ino);
+		inode = NULL;
+	} else
+		inode = iget(child->d_inode->i_sb, ino);
 
 	if (!inode)
 		return ERR_PTR(-EACCES);
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
index 29cce456c7c..43886fa00a2 100644
--- a/fs/freevxfs/vxfs_lookup.c
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -246,6 +246,8 @@ vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
 	u_long			page, npages, block, pblocks, nblocks, offset;
 	loff_t			pos;
 
+	lock_kernel();
+
 	switch ((long)fp->f_pos) {
 	case 0:
 		if (filler(retp, ".", 1, fp->f_pos, ip->i_ino, DT_DIR) < 0)
diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index a3bce3a7725..46fe60b2da2 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -105,7 +105,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent,
 
 /*
  * Add a connection to the control filesystem (if it exists).  Caller
- * must host fuse_mutex
+ * must hold fuse_mutex
  */
 int fuse_ctl_add_conn(struct fuse_conn *fc)
 {
@@ -139,7 +139,7 @@ int fuse_ctl_add_conn(struct fuse_conn *fc)
 
 /*
  * Remove a connection from the control filesystem (if it exists).
- * Caller must host fuse_mutex
+ * Caller must hold fuse_mutex
  */
 void fuse_ctl_remove_conn(struct fuse_conn *fc)
 {
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 72a74cde6de..409ce6a7cca 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -14,6 +14,33 @@
 #include <linux/sched.h>
 #include <linux/namei.h>
 
+#if BITS_PER_LONG >= 64
+static inline void fuse_dentry_settime(struct dentry *entry, u64 time)
+{
+	entry->d_time = time;
+}
+
+static inline u64 fuse_dentry_time(struct dentry *entry)
+{
+	return entry->d_time;
+}
+#else
+/*
+ * On 32 bit archs store the high 32 bits of time in d_fsdata
+ */
+static void fuse_dentry_settime(struct dentry *entry, u64 time)
+{
+	entry->d_time = time;
+	entry->d_fsdata = (void *) (unsigned long) (time >> 32);
+}
+
+static u64 fuse_dentry_time(struct dentry *entry)
+{
+	return (u64) entry->d_time +
+		((u64) (unsigned long) entry->d_fsdata << 32);
+}
+#endif
+
 /*
  * FUSE caches dentries and attributes with separate timeout.  The
  * time in jiffies until the dentry/attributes are valid is stored in
@@ -23,10 +50,13 @@
 /*
  * Calculate the time in jiffies until a dentry/attributes are valid
  */
-static unsigned long time_to_jiffies(unsigned long sec, unsigned long nsec)
+static u64 time_to_jiffies(unsigned long sec, unsigned long nsec)
 {
-	struct timespec ts = {sec, nsec};
-	return jiffies + timespec_to_jiffies(&ts);
+	if (sec || nsec) {
+		struct timespec ts = {sec, nsec};
+		return get_jiffies_64() + timespec_to_jiffies(&ts);
+	} else
+		return 0;
 }
 
 /*
@@ -35,7 +65,8 @@ static unsigned long time_to_jiffies(unsigned long sec, unsigned long nsec)
  */
 static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)
 {
-	entry->d_time = time_to_jiffies(o->entry_valid, o->entry_valid_nsec);
+	fuse_dentry_settime(entry,
+		time_to_jiffies(o->entry_valid, o->entry_valid_nsec));
 	if (entry->d_inode)
 		get_fuse_inode(entry->d_inode)->i_time =
 			time_to_jiffies(o->attr_valid, o->attr_valid_nsec);
@@ -47,7 +78,7 @@ static void fuse_change_timeout(struct dentry *entry, struct fuse_entry_out *o)
  */
 void fuse_invalidate_attr(struct inode *inode)
 {
-	get_fuse_inode(inode)->i_time = jiffies - 1;
+	get_fuse_inode(inode)->i_time = 0;
 }
 
 /*
@@ -60,7 +91,7 @@ void fuse_invalidate_attr(struct inode *inode)
  */
 static void fuse_invalidate_entry_cache(struct dentry *entry)
 {
-	entry->d_time = jiffies - 1;
+	fuse_dentry_settime(entry, 0);
 }
 
 /*
@@ -102,7 +133,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 
 	if (inode && is_bad_inode(inode))
 		return 0;
-	else if (time_after(jiffies, entry->d_time)) {
+	else if (fuse_dentry_time(entry) < get_jiffies_64()) {
 		int err;
 		struct fuse_entry_out outarg;
 		struct fuse_conn *fc;
@@ -666,7 +697,7 @@ static int fuse_revalidate(struct dentry *entry)
 	if (!fuse_allow_task(fc, current))
 		return -EACCES;
 	if (get_node_id(inode) != FUSE_ROOT_ID &&
-	    time_before_eq(jiffies, fi->i_time))
+	    fi->i_time >= get_jiffies_64())
 		return 0;
 
 	return fuse_do_getattr(inode);
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 0dbf9662184..69c7750d55b 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -59,7 +59,7 @@ struct fuse_inode {
 	struct fuse_req *forget_req;
 
 	/** Time in jiffies until the file attributes are valid */
-	unsigned long i_time;
+	u64 i_time;
 };
 
 /** FUSE specific file data */
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index dcaaabd3b9c..7d25092262a 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -51,7 +51,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
 		return NULL;
 
 	fi = get_fuse_inode(inode);
-	fi->i_time = jiffies - 1;
+	fi->i_time = 0;
 	fi->nodeid = 0;
 	fi->nlookup = 0;
 	fi->forget_req = fuse_request_alloc();
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index f2386442ade..017cb0f134d 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -187,7 +187,7 @@ static struct inotify_kernel_event * kernel_event(s32 wd, u32 mask, u32 cookie,
 {
 	struct inotify_kernel_event *kevent;
 
-	kevent = kmem_cache_alloc(event_cachep, GFP_KERNEL);
+	kevent = kmem_cache_alloc(event_cachep, GFP_NOFS);
 	if (unlikely(!kevent))
 		return NULL;
 
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index baf5ae51348..c9d419703cf 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -638,9 +638,6 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
 	if (task->tk_status < 0) {
 		/* RPC error: Re-insert for retransmission */
 		timeout = 10 * HZ;
-	} else if (block->b_done) {
-		/* Block already removed, kill it for real */
-		timeout = 0;
 	} else {
 		/* Call was successful, now wait for client callback */
 		timeout = 60 * HZ;
@@ -709,13 +706,10 @@ nlmsvc_retry_blocked(void)
 			break;
 	        if (time_after(block->b_when,jiffies))
 			break;
-		dprintk("nlmsvc_retry_blocked(%p, when=%ld, done=%d)\n",
-			block, block->b_when, block->b_done);
+		dprintk("nlmsvc_retry_blocked(%p, when=%ld)\n",
+			block, block->b_when);
 		kref_get(&block->b_count);
-		if (block->b_done)
-			nlmsvc_unlink_block(block);
-		else
-			nlmsvc_grant_blocked(block);
+		nlmsvc_grant_blocked(block);
 		nlmsvc_release_block(block);
 	}
 
diff --git a/fs/namei.c b/fs/namei.c
index e01070d7bf5..55a131230f9 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -159,7 +159,7 @@ char * getname(const char __user * filename)
 #ifdef CONFIG_AUDITSYSCALL
 void putname(const char *name)
 {
-	if (unlikely(current->audit_context))
+	if (unlikely(!audit_dummy_context()))
 		audit_putname(name);
 	else
 		__putname(name);
@@ -1125,7 +1125,7 @@ static int fastcall do_path_lookup(int dfd, const char *name,
 	retval = link_path_walk(name, nd);
 out:
 	if (likely(retval == 0)) {
-		if (unlikely(current->audit_context && nd && nd->dentry &&
+		if (unlikely(!audit_dummy_context() && nd && nd->dentry &&
 				nd->dentry->d_inode))
 		audit_inode(name, nd->dentry->d_inode);
 	}
@@ -1357,7 +1357,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
 		return -ENOENT;
 
 	BUG_ON(victim->d_parent->d_inode != dir);
-	audit_inode_child(victim->d_name.name, victim->d_inode, dir->i_ino);
+	audit_inode_child(victim->d_name.name, victim->d_inode, dir);
 
 	error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
 	if (error)
@@ -1659,6 +1659,7 @@ do_last:
 	 * It already exists.
 	 */
 	mutex_unlock(&dir->d_inode->i_mutex);
+	audit_inode_update(path.dentry->d_inode);
 
 	error = -EEXIST;
 	if (flag & O_EXCL)
@@ -1669,6 +1670,7 @@ do_last:
 		if (flag & O_NOFOLLOW)
 			goto exit_dput;
 	}
+
 	error = -ENOENT;
 	if (!path.dentry->d_inode)
 		goto exit_dput;
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 19b98ca468e..86b3169c8ca 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -51,7 +51,7 @@ char *nfs_path(const char *base, const struct dentry *dentry,
 		namelen = dentry->d_name.len;
 		buflen -= namelen + 1;
 		if (buflen < 0)
-			goto Elong;
+			goto Elong_unlock;
 		end -= namelen;
 		memcpy(end, dentry->d_name.name, namelen);
 		*--end = '/';
@@ -68,6 +68,8 @@ char *nfs_path(const char *base, const struct dentry *dentry,
 	end -= namelen;
 	memcpy(end, base, namelen);
 	return end;
+Elong_unlock:
+	spin_unlock(&dcache_lock);
 Elong:
 	return ERR_PTR(-ENAMETOOLONG);
 }
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 52bf634260a..65c0c5b3235 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -63,7 +63,7 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount)
 	return p;
 }
 
-void nfs_readdata_free(struct nfs_read_data *p)
+static void nfs_readdata_free(struct nfs_read_data *p)
 {
 	if (p && (p->pagevec != &p->page_array[0]))
 		kfree(p->pagevec);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 86bac6a5008..50774991f8d 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -137,7 +137,7 @@ struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount)
 	return p;
 }
 
-void nfs_writedata_free(struct nfs_write_data *p)
+static void nfs_writedata_free(struct nfs_write_data *p)
 {
 	if (p && (p->pagevec != &p->page_array[0]))
 		kfree(p->pagevec);
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index ecc439d2565..501d8388453 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -187,6 +187,11 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
 			goto out;
 		}
 
+		/* Set user creds for this exportpoint */
+		error = nfserrno(nfsd_setuser(rqstp, exp));
+		if (error)
+			goto out;
+
 		/*
 		 * Look up the dentry using the NFS file handle.
 		 */
@@ -241,16 +246,17 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
 		dprintk("nfsd: fh_verify - just checking\n");
 		dentry = fhp->fh_dentry;
 		exp = fhp->fh_export;
+		/* Set user creds for this exportpoint; necessary even
+		 * in the "just checking" case because this may be a
+		 * filehandle that was created by fh_compose, and that
+		 * is about to be used in another nfsv4 compound
+		 * operation */
+		error = nfserrno(nfsd_setuser(rqstp, exp));
+		if (error)
+			goto out;
 	}
 	cache_get(&exp->h);
 
-	/* Set user creds for this exportpoint; necessary even in the "just
-	 * checking" case because this may be a filehandle that was created by
-	 * fh_compose, and that is about to be used in another nfsv4 compound
-	 * operation */
-	error = nfserrno(nfsd_setuser(rqstp, exp));
-	if (error)
-		goto out;
 
 	error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
 	if (error)
diff --git a/fs/partitions/Kconfig b/fs/partitions/Kconfig
index c9a47809928..e478f194183 100644
--- a/fs/partitions/Kconfig
+++ b/fs/partitions/Kconfig
@@ -99,7 +99,7 @@ config IBM_PARTITION
 
 config MAC_PARTITION
 	bool "Macintosh partition map support" if PARTITION_ADVANCED
-	default y if MAC
+	default y if (MAC || PPC_PMAC)
 	help
 	  Say Y here if you would like to use hard disks under Linux which
 	  were partitioned on a Macintosh.
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index f318b58510f..1627edd5081 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -48,8 +48,8 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
 		return 0;
 	}
 
-	reiserfs_write_lock(inode->i_sb);
 	mutex_lock(&inode->i_mutex);
+	reiserfs_write_lock(inode->i_sb);
 	/* freeing preallocation only involves relogging blocks that
 	 * are already in the current transaction.  preallocation gets
 	 * freed at the end of each transaction, so it is impossible for
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 12dfdcfbee3..52f1e213654 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -39,14 +39,10 @@ void reiserfs_delete_inode(struct inode *inode)
 
 	/* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
 	if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) {	/* also handles bad_inode case */
-		mutex_lock(&inode->i_mutex);
-
 		reiserfs_delete_xattrs(inode);
 
-		if (journal_begin(&th, inode->i_sb, jbegin_count)) {
-			mutex_unlock(&inode->i_mutex);
+		if (journal_begin(&th, inode->i_sb, jbegin_count))
 			goto out;
-		}
 		reiserfs_update_inode_transaction(inode);
 
 		err = reiserfs_delete_object(&th, inode);
@@ -57,12 +53,8 @@ void reiserfs_delete_inode(struct inode *inode)
 		if (!err) 
 			DQUOT_FREE_INODE(inode);
 
-		if (journal_end(&th, inode->i_sb, jbegin_count)) {
-			mutex_unlock(&inode->i_mutex);
+		if (journal_end(&th, inode->i_sb, jbegin_count))
 			goto out;
-		}
-
-		mutex_unlock(&inode->i_mutex);
 
 		/* check return value from reiserfs_delete_object after
 		 * ending the transaction
@@ -2348,6 +2340,7 @@ static int reiserfs_write_full_page(struct page *page,
 	unsigned long end_index = inode->i_size >> PAGE_CACHE_SHIFT;
 	int error = 0;
 	unsigned long block;
+	sector_t last_block;
 	struct buffer_head *head, *bh;
 	int partial = 0;
 	int nr = 0;
@@ -2395,10 +2388,19 @@ static int reiserfs_write_full_page(struct page *page,
 	}
 	bh = head;
 	block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits);
+	last_block = (i_size_read(inode) - 1) >> inode->i_blkbits;
 	/* first map all the buffers, logging any direct items we find */
 	do {
-		if ((checked || buffer_dirty(bh)) && (!buffer_mapped(bh) ||
-						      (buffer_mapped(bh)
+		if (block > last_block) {
+			/*
+			 * This can happen when the block size is less than
+			 * the page size.  The corresponding bytes in the page
+			 * were zero filled above
+			 */
+			clear_buffer_dirty(bh);
+			set_buffer_uptodate(bh);
+		} else if ((checked || buffer_dirty(bh)) &&
+		           (!buffer_mapped(bh) || (buffer_mapped(bh)
 						       && bh->b_blocknr ==
 						       0))) {
 			/* not mapped yet, or it points to a direct item, search
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index 745c8810089..a986b5e1e28 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -116,12 +116,12 @@ static int reiserfs_unpack(struct inode *inode, struct file *filp)
 	if (REISERFS_I(inode)->i_flags & i_nopack_mask) {
 		return 0;
 	}
-	reiserfs_write_lock(inode->i_sb);
 
 	/* we need to make sure nobody is changing the file size beneath
 	 ** us
 	 */
 	mutex_lock(&inode->i_mutex);
+	reiserfs_write_lock(inode->i_sb);
 
 	write_from = inode->i_size & (blocksize - 1);
 	/* if we are on a block boundary, we are already unpacked.  */
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index 3873c672cb4..33323473e3c 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -75,6 +75,12 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
 	}
 	*err = -ENOSPC;
 
+	UDF_I_UNIQUE(inode) = 0;
+	UDF_I_LENEXTENTS(inode) = 0;
+	UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
+	UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
+	UDF_I_STRAT4096(inode) = 0;
+
 	block = udf_new_block(dir->i_sb, NULL, UDF_I_LOCATION(dir).partitionReferenceNum,
 		start, err);
 	if (*err)
@@ -84,11 +90,6 @@ struct inode * udf_new_inode (struct inode *dir, int mode, int * err)
 	}
 
 	mutex_lock(&sbi->s_alloc_mutex);
-	UDF_I_UNIQUE(inode) = 0;
-	UDF_I_LENEXTENTS(inode) = 0;
-	UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
-	UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
-	UDF_I_STRAT4096(inode) = 0;
 	if (UDF_SB_LVIDBH(sb))
 	{
 		struct logicalVolHeaderDesc *lvhd;
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index b01804baa12..b8238147577 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -248,7 +248,7 @@ static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk,
 
 		if (likely(cur_index != index)) {
 			page = ufs_get_locked_page(mapping, index);
-			if (IS_ERR(page))
+			if (!page || IS_ERR(page)) /* it was truncated or EIO */
 				continue;
 		} else
 			page = locked_page;
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index abd5f23a426..d344b411e26 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -129,7 +129,7 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
 	struct inode * inode;
 
 	if (l > sb->s_blocksize)
-		goto out;
+		goto out_notlocked;
 
 	lock_kernel();
 	inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
@@ -155,6 +155,7 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
 	err = ufs_add_nondir(dentry, inode);
 out:
 	unlock_kernel();
+out_notlocked:
 	return err;
 
 out_fail:
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index 337cf2c46d1..22f820a9b15 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -251,12 +251,12 @@ struct page *ufs_get_locked_page(struct address_space *mapping,
 {
 	struct page *page;
 
-try_again:
 	page = find_lock_page(mapping, index);
 	if (!page) {
 		page = read_cache_page(mapping, index,
 				       (filler_t*)mapping->a_ops->readpage,
 				       NULL);
+
 		if (IS_ERR(page)) {
 			printk(KERN_ERR "ufs_change_blocknr: "
 			       "read_cache_page error: ino %lu, index: %lu\n",
@@ -266,6 +266,14 @@ try_again:
 
 		lock_page(page);
 
+		if (unlikely(page->mapping == NULL)) {
+			/* Truncate got there first */
+			unlock_page(page);
+			page_cache_release(page);
+			page = NULL;
+			goto out;
+		}
+
 		if (!PageUptodate(page) || PageError(page)) {
 			unlock_page(page);
 			page_cache_release(page);
@@ -275,15 +283,8 @@ try_again:
 			       mapping->host->i_ino, index);
 
 			page = ERR_PTR(-EIO);
-			goto out;
 		}
 	}
-
-	if (unlikely(!page->mapping || !page_has_buffers(page))) {
-		unlock_page(page);
-		page_cache_release(page);
-		goto try_again;/*we really need these buffers*/
-	}
 out:
 	return page;
 }
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index ceda3a2859d..7858703ed84 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -246,8 +246,8 @@ extern void xfs_buf_trace(xfs_buf_t *, char *, void *, void *);
 #define BUF_BUSY		XBF_DONT_BLOCK
 
 #define XFS_BUF_BFLAGS(bp)	((bp)->b_flags)
-#define XFS_BUF_ZEROFLAGS(bp)	\
-	((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI))
+#define XFS_BUF_ZEROFLAGS(bp)	((bp)->b_flags &= \
+		~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED))
 
 #define XFS_BUF_STALE(bp)	((bp)->b_flags |= XFS_B_STALE)
 #define XFS_BUF_UNSTALE(bp)	((bp)->b_flags &= ~XFS_B_STALE)
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 9bdef9d5190..4754f342a5d 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -314,6 +314,13 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
 		return;
 	}
 
+	if (xfs_readonly_buftarg(mp->m_ddev_targp)) {
+		xfs_fs_cmn_err(CE_NOTE, mp,
+		  "Disabling barriers, underlying device is readonly");
+		mp->m_flags &= ~XFS_MOUNT_BARRIER;
+		return;
+	}
+
 	error = xfs_barrier_test(mp);
 	if (error) {
 		xfs_fs_cmn_err(CE_NOTE, mp,
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index e95e99f7168..f137856c326 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -217,17 +217,24 @@ xfs_qm_statvfs(
 		return 0;
 	dp = &dqp->q_core;
 
-	limit = dp->d_blk_softlimit ? dp->d_blk_softlimit : dp->d_blk_hardlimit;
+	limit = dp->d_blk_softlimit ?
+		be64_to_cpu(dp->d_blk_softlimit) :
+		be64_to_cpu(dp->d_blk_hardlimit);
 	if (limit && statp->f_blocks > limit) {
 		statp->f_blocks = limit;
-		statp->f_bfree = (statp->f_blocks > dp->d_bcount) ?
-					(statp->f_blocks - dp->d_bcount) : 0;
+		statp->f_bfree =
+			(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
+			 (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
 	}
-	limit = dp->d_ino_softlimit ? dp->d_ino_softlimit : dp->d_ino_hardlimit;
+
+	limit = dp->d_ino_softlimit ?
+		be64_to_cpu(dp->d_ino_softlimit) :
+		be64_to_cpu(dp->d_ino_hardlimit);
 	if (limit && statp->f_files > limit) {
 		statp->f_files = limit;
-		statp->f_ffree = (statp->f_files > dp->d_icount) ?
-					(statp->f_ffree - dp->d_icount) : 0;
+		statp->f_ffree =
+			(statp->f_files > be64_to_cpu(dp->d_icount)) ?
+			 (statp->f_ffree - be64_to_cpu(dp->d_icount)) : 0;
 	}
 
 	xfs_qm_dqput(dqp);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 86c1bf0bba9..1f8ecff8553 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -334,10 +334,9 @@ xfs_itobp(
 #if !defined(__KERNEL__)
 	ni = 0;
 #elif defined(DEBUG)
-	ni = (imap_flags & XFS_IMAP_BULKSTAT) ? 0 :
-		(BBTOB(imap.im_len) >> mp->m_sb.sb_inodelog);
+	ni = BBTOB(imap.im_len) >> mp->m_sb.sb_inodelog;
 #else	/* usual case */
-	ni = (imap_flags & XFS_IMAP_BULKSTAT) ? 0 : 1;
+	ni = 1;
 #endif
 
 	for (i = 0; i < ni; i++) {
@@ -348,11 +347,15 @@ xfs_itobp(
 					(i << mp->m_sb.sb_inodelog));
 		di_ok = INT_GET(dip->di_core.di_magic, ARCH_CONVERT) == XFS_DINODE_MAGIC &&
 			    XFS_DINODE_GOOD_VERSION(INT_GET(dip->di_core.di_version, ARCH_CONVERT));
-		if (unlikely(XFS_TEST_ERROR(!di_ok, mp, XFS_ERRTAG_ITOBP_INOTOBP,
-				 XFS_RANDOM_ITOBP_INOTOBP))) {
+		if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
+						XFS_ERRTAG_ITOBP_INOTOBP,
+						XFS_RANDOM_ITOBP_INOTOBP))) {
+			if (imap_flags & XFS_IMAP_BULKSTAT) {
+				xfs_trans_brelse(tp, bp);
+				return XFS_ERROR(EINVAL);
+			}
 #ifdef DEBUG
-			if (!(imap_flags & XFS_IMAP_BULKSTAT))
-				cmn_err(CE_ALERT,
+			cmn_err(CE_ALERT,
 					"Device %s - bad inode magic/vsn "
 					"daddr %lld #%d (magic=%x)",
 				XFS_BUFTARG_NAME(mp->m_ddev_targp),
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index e730328636c..21ac1a67e3e 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1413,7 +1413,7 @@ xlog_sync(xlog_t		*log,
 	ops = iclog->ic_header.h_num_logops;
 	INT_SET(iclog->ic_header.h_num_logops, ARCH_CONVERT, ops);
 
-	bp	    = iclog->ic_bp;
+	bp = iclog->ic_bp;
 	ASSERT(XFS_BUF_FSPRIVATE2(bp, unsigned long) == (unsigned long)1);
 	XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)2);
 	XFS_BUF_SET_ADDR(bp, BLOCK_LSN(INT_GET(iclog->ic_header.h_lsn, ARCH_CONVERT)));
@@ -1430,15 +1430,14 @@ xlog_sync(xlog_t		*log,
 	}
 	XFS_BUF_SET_PTR(bp, (xfs_caddr_t) &(iclog->ic_header), count);
 	XFS_BUF_SET_FSPRIVATE(bp, iclog);	/* save for later */
+	XFS_BUF_ZEROFLAGS(bp);
 	XFS_BUF_BUSY(bp);
 	XFS_BUF_ASYNC(bp);
 	/*
 	 * Do an ordered write for the log block.
-	 *
-	 * It may not be needed to flush the first split block in the log wrap
-	 * case, but do it anyways to be safe -AK
+	 * Its unnecessary to flush the first split block in the log wrap case.
 	 */
-	if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
+	if (!split && (log->l_mp->m_flags & XFS_MOUNT_BARRIER))
 		XFS_BUF_ORDERED(bp);
 
 	ASSERT(XFS_BUF_ADDR(bp) <= log->l_logBBsize-1);
@@ -1460,7 +1459,7 @@ xlog_sync(xlog_t		*log,
 		return error;
 	}
 	if (split) {
-		bp		= iclog->ic_log->l_xbuf;
+		bp = iclog->ic_log->l_xbuf;
 		ASSERT(XFS_BUF_FSPRIVATE2(bp, unsigned long) ==
 							(unsigned long)1);
 		XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)2);
@@ -1468,6 +1467,7 @@ xlog_sync(xlog_t		*log,
 		XFS_BUF_SET_PTR(bp, (xfs_caddr_t)((__psint_t)&(iclog->ic_header)+
 					    (__psint_t)count), split);
 		XFS_BUF_SET_FSPRIVATE(bp, iclog);
+		XFS_BUF_ZEROFLAGS(bp);
 		XFS_BUF_BUSY(bp);
 		XFS_BUF_ASYNC(bp);
 		if (log->l_mp->m_flags & XFS_MOUNT_BARRIER)
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 6c96391f3f1..b427d220a16 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -515,7 +515,7 @@ xfs_mount(
 	if (error)
 		goto error2;
 
-	if ((mp->m_flags & XFS_MOUNT_BARRIER) && !(vfsp->vfs_flag & VFS_RDONLY))
+	if (mp->m_flags & XFS_MOUNT_BARRIER)
 		xfs_mountfs_check_barriers(mp);
 
 	error = XFS_IOINIT(vfsp, args, flags);