diff options
| author | Xiao Ni <xni@redhat.com> | 2018-10-20 08:09:25 +0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2018-10-22 09:15:26 -0700 |
| commit | af9b926de9c5986ab009e64917de87c9758bab10 (patch) | |
| tree | 87258d69330822fc21a9ac467b2f856764f07cda /drivers/md/md.c | |
| parent | 6aaa58c994277647f8b05ffef3b9b225a2d08f36 (diff) | |
| download | linux-af9b926de9c5986ab009e64917de87c9758bab10.tar.bz2 | |
MD: Memory leak when flush bio size is zero
flush_pool is leaked when flush bio size is zero
Fixes: 5a409b4f56d5 ("MD: fix lock contention for flush bios")
Signed-off-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 1fa7f1b1d98a..fc488cb30a94 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -452,10 +452,11 @@ static void md_end_flush(struct bio *fbio) rdev_dec_pending(rdev, mddev); if (atomic_dec_and_test(&fi->flush_pending)) { - if (bio->bi_iter.bi_size == 0) + if (bio->bi_iter.bi_size == 0) { /* an empty barrier - all done */ bio_endio(bio); - else { + mempool_free(fi, mddev->flush_pool); + } else { INIT_WORK(&fi->flush_work, submit_flushes); queue_work(md_wq, &fi->flush_work); } @@ -509,10 +510,11 @@ void md_flush_request(struct mddev *mddev, struct bio *bio) rcu_read_unlock(); if (atomic_dec_and_test(&fi->flush_pending)) { - if (bio->bi_iter.bi_size == 0) + if (bio->bi_iter.bi_size == 0) { /* an empty barrier - all done */ bio_endio(bio); - else { + mempool_free(fi, mddev->flush_pool); + } else { INIT_WORK(&fi->flush_work, submit_flushes); queue_work(md_wq, &fi->flush_work); } |