[PATCH] sem2mutex: drivers/block/loop.c

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 0010704..74bf025 100644 (file)
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1144,7 +1144,7 @@ static int lo_ioctl(struct inode * inode, struct file * file,
        struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
        int err;
 
-       down(&lo->lo_ctl_mutex);
+       mutex_lock(&lo->lo_ctl_mutex);
        switch (cmd) {
        case LOOP_SET_FD:
                err = loop_set_fd(lo, file, inode->i_bdev, arg);
@@ -1170,7 +1170,7 @@ static int lo_ioctl(struct inode * inode, struct file * file,
        default:
                err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL;
        }
-       up(&lo->lo_ctl_mutex);
+       mutex_unlock(&lo->lo_ctl_mutex);
        return err;
 }
 
@@ -1178,9 +1178,9 @@ static int lo_open(struct inode *inode, struct file *file)
 {
        struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
 
-       down(&lo->lo_ctl_mutex);
+       mutex_lock(&lo->lo_ctl_mutex);
        lo->lo_refcnt++;
-       up(&lo->lo_ctl_mutex);
+       mutex_unlock(&lo->lo_ctl_mutex);
 
        return 0;
 }
@@ -1189,9 +1189,9 @@ static int lo_release(struct inode *inode, struct file *file)
 {
        struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
 
-       down(&lo->lo_ctl_mutex);
+       mutex_lock(&lo->lo_ctl_mutex);
        --lo->lo_refcnt;
-       up(&lo->lo_ctl_mutex);
+       mutex_unlock(&lo->lo_ctl_mutex);
 
        return 0;
 }
@@ -1233,12 +1233,12 @@ int loop_unregister_transfer(int number)
        xfer_funcs[n] = NULL;
 
        for (lo = &loop_dev[0]; lo < &loop_dev[max_loop]; lo++) {
-               down(&lo->lo_ctl_mutex);
+               mutex_lock(&lo->lo_ctl_mutex);
 
                if (lo->lo_encryption == xfer)
                        loop_release_xfer(lo);
 
-               up(&lo->lo_ctl_mutex);
+               mutex_unlock(&lo->lo_ctl_mutex);
        }
 
        return 0;
@@ -1285,7 +1285,7 @@ static int __init loop_init(void)
                lo->lo_queue = blk_alloc_queue(GFP_KERNEL);
                if (!lo->lo_queue)
                        goto out_mem4;
-               init_MUTEX(&lo->lo_ctl_mutex);
+               mutex_init(&lo->lo_ctl_mutex);
                init_completion(&lo->lo_done);
                init_completion(&lo->lo_bh_done);
                lo->lo_number = i;

diff --git a/include/linux/loop.h b/include/linux/loop.h
index f965067..e76c761 100644 (file)
--- a/include/linux/loop.h
+++ b/include/linux/loop.h
@@ -17,6 +17,7 @@
 #include <linux/bio.h>
 #include <linux/blkdev.h>
 #include <linux/spinlock.h>
+#include <linux/mutex.h>
 
 /* Possible states of device */
 enum {
@@ -60,7 +61,7 @@ struct loop_device {
        int                     lo_state;
        struct completion       lo_done;
        struct completion       lo_bh_done;
-       struct semaphore        lo_ctl_mutex;
+       struct mutex            lo_ctl_mutex;
        int                     lo_pending;
 
        request_queue_t         *lo_queue;