kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Make FAT users happier by not deadlocking

Browse source 
The FAT BKL removal patch can cause deadlocks.  It turns out that the new
lock_super() calls are unneeded, remove them (as directed by Linus).

Reported-by: "Tony Luck" <tony.luck@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2008-05-29 17:14:05 -06:00
parent 38c4c97c62
commit 9c20616c38
1 changed files with 1 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
fs/fat/file.c
View file

@ -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, int skip)
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 msdos_sb_info *sbi, struct inode *inode)
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, struct iattr *attr)
mask = sbi->options.fs_fmask;
inode->i_mode &= S_IFMT | (S_IRWXUGO & ~mask);
out:
unlock_super(sb);
return error;
}
EXPORT_SYMBOL_GPL(fat_setattr);