UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mtd: Remove redundant mutex from mtd_blkdevs.c 

In commit 2a48fc0ab2 ('block: autoconvert
trivial BKL users to private mutex'), Arnd replaced the BKL usage with a
mutex. However, Maxim has already provided a better fix in commit
480792b7bf ('mtd: blktrans: kill BKL'),
which was simply to remove the BKL without replacing it — since he'd
already made it do all necessary locking for itself.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2010-10-30 12:39:21 +01:00
parent 67577927e8
commit 8cc9de3ebd
1 changed files with 0 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/mtd/mtd_blkdevs.c
View File

@ -37,7 +37,6 @@
#include "mtdcore.h"
static DEFINE_MUTEX(mtd_blkdevs_mutex);
static LIST_HEAD(blktrans_majors);
static DEFINE_MUTEX(blktrans_ref_mutex);
@ -185,7 +184,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
if (!dev)
return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (dev->open++)
@ -202,7 +200,6 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@ -214,7 +211,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
if (!dev)
return ret;
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (--dev->open)
@ -230,7 +226,6 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);
mutex_unlock(&mtd_blkdevs_mutex);
return ret;
}
@ -263,7 +258,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
if (!dev)
return ret;
mutex_lock(&mtd_blkdevs_mutex);
mutex_lock(&dev->lock);
if (!dev->mtd)
@ -278,7 +272,6 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
}
unlock:
mutex_unlock(&dev->lock);
mutex_unlock(&mtd_blkdevs_mutex);
blktrans_dev_put(dev);
return ret;
}