From 8cc9de3ebdf654601db51a516267dff89c49acc3 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sat, 30 Oct 2010 12:39:21 +0100 Subject: [PATCH] mtd: Remove redundant mutex from mtd_blkdevs.c MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit In commit 2a48fc0ab24241755dc93bfd4f01d68efab47f5a ('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 480792b7bf188c29b8d4b10fee65c3a06ec5dbf7 ('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 --- drivers/mtd/mtd_blkdevs.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index f9329794f3b5..cb20c67995d8 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -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; } -- 2.20.1