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| author |   NeilBrown <neilb@suse.de> | 2007-04-04 19:08:18 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-04 21:12:47 -0700 |
| commit | 5792a2856a63cdc568e08a7d6f9b2413d9217b3e (patch) | |
| tree | 042a09fbfdf75dac5efa3bf61c7d6c6dd4c6ba7f /include/linux/raid/md_k.h | |
| parent | [PATCH] kernel/time.c: add missing symbol exports (diff) | |
| download | linux-dev-5792a2856a63cdc568e08a7d6f9b2413d9217b3e.tar.xz linux-dev-5792a2856a63cdc568e08a7d6f9b2413d9217b3e.zip | |
[PATCH] md: avoid a deadlock when removing a device from an md array via sysfs
A device can be removed from an md array via e.g.
echo remove > /sys/block/md3/md/dev-sde/state
This will try to remove the 'dev-sde' subtree which will deadlock
since
commit e7b0d26a86943370c04d6833c6edba2a72a6e240
With this patch we run the kobject_del via schedule_work so as to
avoid the deadlock.
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/raid/md_k.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 8245c282168b..de72c49747c8 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -104,6 +104,7 @@ struct mdk_rdev_s * for reporting to userspace and storing * in superblock. */ + struct work_struct del_work; /* used for delayed sysfs removal */ }; struct mddev_s |