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authorRussell King <rmk+kernel@arm.linux.org.uk>2013-08-28 18:37:31 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-08-28 18:37:31 +0100
commitcdf0bfb0126bbd8c5424ca01fd59fd70d8ea80f9 (patch)
treee7864d3dacf433b7ccbe17a49b2e72b6a4b3a24c /drivers/md/raid10.c
parentb4f656eea63376da79b0b5a17660c4ce14b71b74 (diff)
parent6af396a6b6c698eb3834184518fc9a59bc22c817 (diff)
Merge branch 'for-rmk/barriers' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
Diffstat (limited to 'drivers/md/raid10.c')
-rw-r--r--drivers/md/raid10.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 957a719e8c2f..df7b0a06b0ea 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2290,12 +2290,18 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio)
d = r10_bio->devs[1].devnum;
wbio = r10_bio->devs[1].bio;
wbio2 = r10_bio->devs[1].repl_bio;
+ /* Need to test wbio2->bi_end_io before we call
+ * generic_make_request as if the former is NULL,
+ * the latter is free to free wbio2.
+ */
+ if (wbio2 && !wbio2->bi_end_io)
+ wbio2 = NULL;
if (wbio->bi_end_io) {
atomic_inc(&conf->mirrors[d].rdev->nr_pending);
md_sync_acct(conf->mirrors[d].rdev->bdev, bio_sectors(wbio));
generic_make_request(wbio);
}
- if (wbio2 && wbio2->bi_end_io) {
+ if (wbio2) {
atomic_inc(&conf->mirrors[d].replacement->nr_pending);
md_sync_acct(conf->mirrors[d].replacement->bdev,
bio_sectors(wbio2));