From: Ingo Molnar <[email protected]>
semaphore to mutex conversion.
the conversion was generated via scripts, and the result was validated
automatically via a script as well.
build and boot tested.
Signed-off-by: Ingo Molnar <[email protected]>
----
fs/autofs4/autofs_i.h | 3 ++-
fs/autofs4/inode.c | 2 +-
fs/autofs4/waitq.c | 16 ++++++++--------
3 files changed, 11 insertions(+), 10 deletions(-)
Index: linux/fs/autofs4/autofs_i.h
===================================================================
--- linux.orig/fs/autofs4/autofs_i.h
+++ linux/fs/autofs4/autofs_i.h
@@ -13,6 +13,7 @@
/* Internal header file for autofs */
#include <linux/auto_fs4.h>
+#include <linux/mutex.h>
#include <linux/list.h>
/* This is the range of ioctl() numbers we claim as ours */
@@ -102,7 +103,7 @@ struct autofs_sb_info {
int reghost_enabled;
int needs_reghost;
struct super_block *sb;
- struct semaphore wq_sem;
+ struct mutex wq_mutex;
spinlock_t fs_lock;
struct autofs_wait_queue *queues; /* Wait queue pointer */
};
Index: linux/fs/autofs4/inode.c
===================================================================
--- linux.orig/fs/autofs4/inode.c
+++ linux/fs/autofs4/inode.c
@@ -269,7 +269,7 @@ int autofs4_fill_super(struct super_bloc
sbi->sb = s;
sbi->version = 0;
sbi->sub_version = 0;
- init_MUTEX(&sbi->wq_sem);
+ mutex_init(&sbi->wq_mutex);
spin_lock_init(&sbi->fs_lock);
sbi->queues = NULL;
s->s_blocksize = 1024;
Index: linux/fs/autofs4/waitq.c
===================================================================
--- linux.orig/fs/autofs4/waitq.c
+++ linux/fs/autofs4/waitq.c
@@ -178,7 +178,7 @@ int autofs4_wait(struct autofs_sb_info *
return -ENOENT;
}
- if (down_interruptible(&sbi->wq_sem)) {
+ if (mutex_lock_interruptible(&sbi->wq_mutex)) {
kfree(name);
return -EINTR;
}
@@ -194,7 +194,7 @@ int autofs4_wait(struct autofs_sb_info *
/* Can't wait for an expire if there's no mount */
if (notify == NFY_NONE && !d_mountpoint(dentry)) {
kfree(name);
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
return -ENOENT;
}
@@ -202,7 +202,7 @@ int autofs4_wait(struct autofs_sb_info *
wq = kmalloc(sizeof(struct autofs_wait_queue),GFP_KERNEL);
if ( !wq ) {
kfree(name);
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
return -ENOMEM;
}
@@ -218,10 +218,10 @@ int autofs4_wait(struct autofs_sb_info *
wq->status = -EINTR; /* Status return if interrupted */
atomic_set(&wq->wait_ctr, 2);
atomic_set(&wq->notified, 1);
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
} else {
atomic_inc(&wq->wait_ctr);
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
kfree(name);
DPRINTK("existing wait id = 0x%08lx, name = %.*s, nfy=%d",
(unsigned long) wq->wait_queue_token, wq->len, wq->name, notify);
@@ -282,19 +282,19 @@ int autofs4_wait_release(struct autofs_s
{
struct autofs_wait_queue *wq, **wql;
- down(&sbi->wq_sem);
+ mutex_lock(&sbi->wq_mutex);
for ( wql = &sbi->queues ; (wq = *wql) != 0 ; wql = &wq->next ) {
if ( wq->wait_queue_token == wait_queue_token )
break;
}
if ( !wq ) {
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
return -EINVAL;
}
*wql = wq->next; /* Unlink from chain */
- up(&sbi->wq_sem);
+ mutex_unlock(&sbi->wq_mutex);
kfree(wq->name);
wq->name = NULL; /* Do not wait on this queue */
-
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