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[PATCH] mutex subsystem, semaphore to mutex: VFS, sb->s_lock

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This patch converts the superblock-lock semaphore to a mutex, affecting
lock_super()/unlock_super(). Tested on ext3 and XFS.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2006-01-09 15:59:25 -08:00
committed by Ingo Molnar
parent 1b1dcc1b57
commit 7892f2f48d
4 changed files with 6 additions and 6 deletions
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6
include/linux/fs.h
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@@ -821,7 +821,7 @@ struct super_block {
unsigned long s_magic;
struct dentry *s_root;
struct rw_semaphore s_umount;
struct semaphore s_lock;
struct mutex s_lock;
int s_count;
int s_syncing;
int s_need_sync_fs;
@@ -893,13 +893,13 @@ static inline int has_fs_excl(void)
static inline void lock_super(struct super_block * sb)
{
get_fs_excl();
down(&sb->s_lock);
mutex_lock(&sb->s_lock);
}
static inline void unlock_super(struct super_block * sb)
{
put_fs_excl();
up(&sb->s_lock);
mutex_unlock(&sb->s_lock);
}
/*