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From 0447dad04ab82a25db9fb3c8611fad0510347f97 Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Sun, 16 Jan 2011 20:07:06 -0500
Subject: [PATCH] affs: convert from semaphore to mutex
This is one of several extractions from the merge up to 33-rc8.
You can find the origin of this change in the tip merge commit:
commit 5f854cfc024622e4aae14d7cf422f6ff86278688
Merge: cc24da0 4ec62b2
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Sun Feb 21 20:17:22 2010 +0100
Forward to 2.6.33-rc8
Merge branch 'linus' into rt/head with a pile of conflicts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Normally there are not significant changes/additions in a merge commit that
are not from any other "normal" commit. But in this case there are, so
break them out into separate explicit commits.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
fs/affs/affs.h | 26 +++++++++-----------------
fs/affs/super.c | 4 ++--
2 files changed, 11 insertions(+), 19 deletions(-)
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 861dae6..6abe86f 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -50,9 +50,8 @@ struct affs_ext_key {
*/
struct affs_inode_info {
atomic_t i_opencnt;
- struct semaphore i_link_lock; /* Protects internal inode access. */
- struct semaphore i_ext_lock; /* Protects internal inode access. */
-#define i_hash_lock i_ext_lock
+ struct mutex i_link_lock; /* Protects internal inode access. */
+ struct mutex i_ext_lock; /* Protects internal inode access. */
u32 i_blkcnt; /* block count */
u32 i_extcnt; /* extended block count */
u32 *i_lc; /* linear cache of extended blocks */
@@ -276,30 +275,23 @@ affs_adjust_bitmapchecksum(struct buffer_head *bh, u32 val)
static inline void
affs_lock_link(struct inode *inode)
{
- down(&AFFS_I(inode)->i_link_lock);
+ mutex_lock(&AFFS_I(inode)->i_link_lock);
}
static inline void
affs_unlock_link(struct inode *inode)
{
- up(&AFFS_I(inode)->i_link_lock);
-}
-static inline void
-affs_lock_dir(struct inode *inode)
-{
- down(&AFFS_I(inode)->i_hash_lock);
-}
-static inline void
-affs_unlock_dir(struct inode *inode)
-{
- up(&AFFS_I(inode)->i_hash_lock);
+ mutex_unlock(&AFFS_I(inode)->i_link_lock);
}
static inline void
affs_lock_ext(struct inode *inode)
{
- down(&AFFS_I(inode)->i_ext_lock);
+ mutex_lock(&AFFS_I(inode)->i_ext_lock);
}
static inline void
affs_unlock_ext(struct inode *inode)
{
- up(&AFFS_I(inode)->i_ext_lock);
+ mutex_unlock(&AFFS_I(inode)->i_ext_lock);
}
+
+#define affs_lock_dir(i) affs_lock_ext(i)
+#define affs_unlock_dir(i) affs_unlock_ext(i)
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 51e326f..8ada98f 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -114,8 +114,8 @@ static void init_once(void *foo)
{
struct affs_inode_info *ei = (struct affs_inode_info *) foo;
- semaphore_init(&ei->i_link_lock);
- semaphore_init(&ei->i_ext_lock);
+ mutex_init(&ei->i_link_lock);
+ mutex_init(&ei->i_ext_lock);
inode_init_once(&ei->vfs_inode);
}
--
1.7.0.4
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