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| author | NeilBrown <neilb@suse.de> | 2010-10-26 18:31:13 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-10-28 17:36:15 +1100 |
| commit | a167f663243662aa9153c01086580a11cde9ffdc (patch) | |
| tree | 886e64787421bbf17a1eab7853d67258b598f050 /drivers/md/raid5.c | |
| parent | 2b193363ef68667ad717a6723165e0dccf99470f (diff) | |
| download | kernel_samsung_smdk4412-a167f663243662aa9153c01086580a11cde9ffdc.zip kernel_samsung_smdk4412-a167f663243662aa9153c01086580a11cde9ffdc.tar.gz kernel_samsung_smdk4412-a167f663243662aa9153c01086580a11cde9ffdc.tar.bz2 | |
md: use separate bio pool for each md device.
bio_clone and bio_alloc allocate from a common bio pool.
If an md device is stacked with other devices that use this pool, or under
something like swap which uses the pool, then the multiple calls on
the pool can cause deadlocks.
So allocate a local bio pool for each md array and use that rather
than the common pool.
This pool is used both for regular IO and metadata updates.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.c')
| -rw-r--r-- | drivers/md/raid5.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 8abc159..dc574f3 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3876,9 +3876,9 @@ static int chunk_aligned_read(mddev_t *mddev, struct bio * raid_bio) return 0; } /* - * use bio_clone to make a copy of the bio + * use bio_clone_mddev to make a copy of the bio */ - align_bi = bio_clone(raid_bio, GFP_NOIO); + align_bi = bio_clone_mddev(raid_bio, GFP_NOIO, mddev); if (!align_bi) return 0; /* |