提交 9c20616c 编写于 作者: J Jonathan Corbet

Make FAT users happier by not deadlocking

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: N"Tony Luck" <tony.luck@intel.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
上级 38c4c97c
......@@ -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);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册