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authorMartin K. Petersen <martin.petersen@oracle.com>2009-01-04 02:43:38 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-01-30 12:34:36 +0100
commit7b24fc4d7eb611da367dea3aad45473050aacd6c (patch)
tree42c42a317c2236c45edf523ea0fc527189a5203d /fs/bio-integrity.c
parentf2257b70b0f9b2fe8f2afd83fc6798dca75930b8 (diff)
downloadlinux-stericsson-7b24fc4d7eb611da367dea3aad45473050aacd6c.tar.gz
block: Don't verify integrity metadata on read error
If we get an I/O error on a read request there is no point in doing a verify pass on the integrity buffer. Adjust the completion path accordingly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/bio-integrity.c')
-rw-r--r--fs/bio-integrity.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index 77ebc3c263d6..8396d741f804 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -465,7 +465,7 @@ static int bio_integrity_verify(struct bio *bio)
if (ret) {
kunmap_atomic(kaddr, KM_USER0);
- break;
+ return ret;
}
sectors = bv->bv_len / bi->sector_size;
@@ -493,18 +493,13 @@ static void bio_integrity_verify_fn(struct work_struct *work)
struct bio_integrity_payload *bip =
container_of(work, struct bio_integrity_payload, bip_work);
struct bio *bio = bip->bip_bio;
- int error = bip->bip_error;
+ int error;
- if (bio_integrity_verify(bio)) {
- clear_bit(BIO_UPTODATE, &bio->bi_flags);
- error = -EIO;
- }
+ error = bio_integrity_verify(bio);
/* Restore original bio completion handler */
bio->bi_end_io = bip->bip_end_io;
-
- if (bio->bi_end_io)
- bio->bi_end_io(bio, error);
+ bio_endio(bio, error);
}
/**
@@ -525,7 +520,17 @@ void bio_integrity_endio(struct bio *bio, int error)
BUG_ON(bip->bip_bio != bio);
- bip->bip_error = error;
+ /* In case of an I/O error there is no point in verifying the
+ * integrity metadata. Restore original bio end_io handler
+ * and run it.
+ */
+ if (error) {
+ bio->bi_end_io = bip->bip_end_io;
+ bio_endio(bio, error);
+
+ return;
+ }
+
INIT_WORK(&bip->bip_work, bio_integrity_verify_fn);
queue_work(kintegrityd_wq, &bip->bip_work);
}