diff options
| author | NeilBrown <neilb@suse.de> | 2007-04-04 22:08:18 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-05 00:12:47 -0400 |
| commit | 5792a2856a63cdc568e08a7d6f9b2413d9217b3e (patch) | |
| tree | 042a09fbfdf75dac5efa3bf61c7d6c6dd4c6ba7f /include/linux | |
| parent | 456a09dce9ca9b0013cabcda918aee851a04471d (diff) | |
[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 'include/linux')
| -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 | |||
| 104 | * for reporting to userspace and storing | 104 | * for reporting to userspace and storing |
| 105 | * in superblock. | 105 | * in superblock. |
| 106 | */ | 106 | */ |
| 107 | struct work_struct del_work; /* used for delayed sysfs removal */ | ||
| 107 | }; | 108 | }; |
| 108 | 109 | ||
| 109 | struct mddev_s | 110 | struct mddev_s |