md: use bio_kmalloc rather than bio_alloc when failure is acceptable.
bio_alloc can never fail (as it uses a mempool) but an block
indefinitely, especially if the caller is holding a reference to a
previously allocated bio.
So these to places which both handle failure and hold multiple bios
should not use bio_alloc, they should use bio_kmalloc.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 8f5543a..6709cb2 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -120,7 +120,7 @@
* Allocate bios.
*/
for (j = nalloc ; j-- ; ) {
- bio = bio_alloc(gfp_flags, RESYNC_PAGES);
+ bio = bio_kmalloc(gfp_flags, RESYNC_PAGES);
if (!bio)
goto out_free_bio;
r10_bio->devs[j].bio = bio;