The patch titled
lockdep: remove lock_key approach to managing nested bd_mutex locks
has been removed from the -mm tree. Its filename was
remove-lock_key-approach-to-managing-nested-bd_mutex-locks.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: lockdep: remove lock_key approach to managing nested bd_mutex locks
From: NeilBrown <neilb@xxxxxxx>
The extra call to get_gendisk is not good. It causes a ->probe and possible
module load before it is really appropriate to do this.
Cc: Ingo Molnar <mingo@xxxxxxx>
Acked-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/block_dev.c | 9 ---------
1 file changed, 9 deletions(-)
diff -puN fs/block_dev.c~remove-lock_key-approach-to-managing-nested-bd_mutex-locks fs/block_dev.c
--- a/fs/block_dev.c~remove-lock_key-approach-to-managing-nested-bd_mutex-locks
+++ a/fs/block_dev.c
@@ -355,14 +355,10 @@ static int bdev_set(struct inode *inode,
static LIST_HEAD(all_bdevs);
-static struct lock_class_key bdev_part_lock_key;
-
struct block_device *bdget(dev_t dev)
{
struct block_device *bdev;
struct inode *inode;
- struct gendisk *disk;
- int part = 0;
inode = iget5_locked(bd_mnt->mnt_sb, hash(dev),
bdev_test, bdev_set, &dev);
@@ -388,11 +384,6 @@ struct block_device *bdget(dev_t dev)
list_add(&bdev->bd_list, &all_bdevs);
spin_unlock(&bdev_lock);
unlock_new_inode(inode);
- mutex_init(&bdev->bd_mutex);
- disk = get_gendisk(dev, &part);
- if (part)
- lockdep_set_class(&bdev->bd_mutex, &bdev_part_lock_key);
- put_disk(disk);
}
return bdev;
}
_
Patches currently in -mm which might be from neilb@xxxxxxx are
origin.patch
remove-lock_key-approach-to-managing-nested-bd_mutex-locks.patch
simplify-some-aspects-of-bd_mutex-nesting.patch
use-mutex_lock_nested-for-bd_mutex-to-avoid-lockdep-warning.patch
avoid-lockdep-warning-in-md.patch
bdev-fix-bd_part_count-leak.patch
lockdep-annotate-nfsd4-recover-code.patch
nfs2-calculate-w-a-bit-later-in-nfsaclsvc_encode_getaclres.patch
nfs3-calculate-w-a-bit-later-in-nfs3svc_encode_getaclres.patch
readahead-nfsd-case.patch
readahead-nfsd-case-fix.patch
md-tidy-up-device-change-notification-when-an-md-array-is-stopped.patch
md-define-raid5_mergeable_bvec.patch
md-handle-bypassing-the-read-cache-assuming-nothing-fails.patch
md-allow-reads-that-have-bypassed-the-cache-to-be-retried-on-failure.patch
md-allow-reads-that-have-bypassed-the-cache-to-be-retried-on-failure-fix.patch
md-allow-reads-that-have-bypassed-the-cache-to-be-retried-on-failure-misc-fixes-for-aligned-read-handling-including-raid6-read-corruption.patch
md-allow-reads-that-have-bypassed-the-cache-to-be-retried-on-failure-misc-fixes-for-error-handling-of-aligned-reads.patch
md-enable-bypassing-cache-for-reads.patch
md-fix-innocuous-bug-in-raid6-stripe_to_pdidx.patch
md-conditionalize-some-code.patch
md-change-lifetime-rules-for-md-devices.patch
md-dm-reduce-stack-usage-with-stacked-block-devices.patch
-
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