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[PATCH] Revert bd_mount_mutex back to a semaphore

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Revert bd_mount_mutex back to a semaphore so that xfs_freeze -f /mnt/newtest;
xfs_freeze -u /mnt/newtest works safely and doesn't produce lockdep warnings.

(XFS unlocks the semaphore from a different task, by design.  The mutex
code warns about this)

Signed-off-by: Dave Chinner <dgc@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Chinner
2007-01-10 23:15:41 -08:00
committed by Linus Torvalds
parent 88bf7b391d
commit f73ca1b76c
5 changed files with 9 additions and 9 deletions
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2
fs/block_dev.c
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@@ -411,7 +411,7 @@ static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flag
{
memset(bdev, 0, sizeof(*bdev));
mutex_init(&bdev->bd_mutex);
mutex_init(&bdev->bd_mount_mutex);
sema_init(&bdev->bd_mount_sem, 1);
INIT_LIST_HEAD(&bdev->bd_inodes);
INIT_LIST_HEAD(&bdev->bd_list);
#ifdef CONFIG_SYSFS