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authorLinus Torvalds <torvalds@linux-foundation.org>2018-06-09 12:01:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-06-09 12:01:36 -0700
commitd60dafdca4b463405e5586df923f05b10e9ac2f9 (patch)
treeeb87cb614a64615eb0a1a0e32f62ad28e705e68c /drivers/md/raid10.c
parent1329c20433fb1298dd0bf94b59c1a11f27a1f2e2 (diff)
parent5a409b4f56d50b212334f338cb8465d65550cd85 (diff)
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Pull MD updates from Shaohua Li: "A few fixes of MD for this merge window. Mostly bug fixes: - raid5 stripe batch fix from Amy - Read error handling for raid1 FailFast device from Gioh - raid10 recovery NULL pointer dereference fix from Guoqing - Support write hint for raid5 stripe cache from Mariusz - Fixes for device hot add/remove from Neil and Yufen - Improve flush bio scalability from Xiao" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: MD: fix lock contention for flush bios md/raid5: Assigning NULL to sh->batch_head before testing bit R5_Overlap of a stripe md/raid1: add error handling of read error from FailFast device md: fix NULL dereference of mddev->pers in remove_and_add_spares() raid5: copy write hint from origin bio to stripe md: fix two problems with setting the "re-add" device state. raid10: check bio in r10buf_pool_free to void NULL pointer dereference md: fix an error code format and remove unsed bio_sector
Diffstat (limited to 'drivers/md/raid10.c')
-rw-r--r--drivers/md/raid10.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 37d4b236b81b..1147ae59e3b6 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -255,9 +255,11 @@ static void r10buf_pool_free(void *__r10_bio, void *data)
for (j = conf->copies; j--; ) {
struct bio *bio = r10bio->devs[j].bio;
- rp = get_resync_pages(bio);
- resync_free_pages(rp);
- bio_put(bio);
+ if (bio) {
+ rp = get_resync_pages(bio);
+ resync_free_pages(rp);
+ bio_put(bio);
+ }
bio = r10bio->devs[j].repl_bio;
if (bio)
@@ -2362,7 +2364,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
{
int sect = 0; /* Offset from r10_bio->sector */
int sectors = r10_bio->sectors;
- struct md_rdev*rdev;
+ struct md_rdev *rdev;
int max_read_errors = atomic_read(&mddev->max_corr_read_errors);
int d = r10_bio->devs[r10_bio->read_slot].devnum;