diff options
| author | Shaohua Li <shli@kernel.org> | 2012-05-21 03:26:59 +0400 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2012-05-21 03:26:59 +0400 |
| commit | b5e1b8cee7ad58a15d2fa79bcd7946acb592602d (patch) | |
| tree | a9f009012ccdca7c9daefb089e9dbca7224843c7 | |
| parent | b0d634d5683f0b186b242ce6a4f3b041edb8b956 (diff) | |
| download | linux-b5e1b8cee7ad58a15d2fa79bcd7946acb592602d.tar.xz | |
md: using GFP_NOIO to allocate bio for flush request
A flush request is usually issued in transaction commit code path, so
using GFP_KERNEL to allocate memory for flush request bio falls into
the classic deadlock issue.
This is suitable for any -stable kernel to which it applies as it
avoids a possible deadlock.
Cc: stable@vger.kernel.org
Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
| -rw-r--r-- | drivers/md/md.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 01233d855eb2..2b30ffdb81b2 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -452,7 +452,7 @@ static void submit_flushes(struct work_struct *ws) atomic_inc(&rdev->nr_pending); atomic_inc(&rdev->nr_pending); rcu_read_unlock(); - bi = bio_alloc_mddev(GFP_KERNEL, 0, mddev); + bi = bio_alloc_mddev(GFP_NOIO, 0, mddev); bi->bi_end_io = md_end_flush; bi->bi_private = rdev; bi->bi_bdev = rdev->bdev; |