The patch titled
fatfs: remove deadlocking lock_super() calls
has been removed from the -mm tree. Its filename was
fatfs-remove-deadlocking-lock_super-calls.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: fatfs: remove deadlocking lock_super() calls
From: corbet@xxxxxxx (Jonathan Corbet)
Linus sez:
So the end result of that is all the "lock_kernel()" calls in
fs/fat/file.c should actually just go away - not be replaced by
lock_super() at alL!
This patch causes that to be.
Signed-off-by: Jonathan Corbet <corbet@xxxxxxx>
Acked-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fat/file.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff -puN fs/fat/file.c~fatfs-remove-deadlocking-lock_super-calls fs/fat/file.c
--- a/fs/fat/file.c~fatfs-remove-deadlocking-lock_super-calls
+++ a/fs/fat/file.c
@@ -11,7 +11,6 @@
#include <linux/mount.h>
#include <linux/time.h>
#include <linux/msdos_fs.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
@@ -229,8 +228,7 @@ static int fat_free(struct inode *inode,
void fat_truncate(struct inode *inode)
{
- struct super_block *sb = inode->i_sb;
- struct msdos_sb_info *sbi = MSDOS_SB(sb);
+ struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
const unsigned int cluster_size = sbi->cluster_size;
int nr_clusters;
@@ -243,9 +241,7 @@ void fat_truncate(struct inode *inode)
nr_clusters = (inode->i_size + (cluster_size - 1)) >> sbi->cluster_bits;
- lock_super(sb);
fat_free(inode, nr_clusters);
- unlock_super(sb);
fat_flush_inodes(inode->i_sb, inode, NULL);
}
@@ -298,14 +294,11 @@ static int fat_allow_set_time(struct msd
int fat_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct super_block *sb = dentry->d_sb;
struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
struct inode *inode = dentry->d_inode;
int mask, error = 0;
unsigned int ia_valid;
- lock_super(sb);
-
/*
* Expand the file. Since inode_setattr() updates ->i_size
* before calling the ->truncate(), but FAT needs to fill the
@@ -358,7 +351,6 @@ int fat_setattr(struct dentry *dentry, s
mask = sbi->options.fs_fmask;
inode->i_mode &= S_IFMT | (S_IRWXUGO & ~mask);
out:
- unlock_super(sb);
return error;
}
EXPORT_SYMBOL_GPL(fat_setattr);
_
Patches currently in -mm which might be from corbet@xxxxxxx are
linux-next.patch
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