diff options
| author | NeilBrown <neilb@suse.de> | 2006-12-10 02:20:51 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-10 09:57:21 -0800 |
| commit | c2b00852fbae4f8c45c2651530ded3bd01bde814 (patch) | |
| tree | 697a2087ffb1e5d3d81af628e818f9d943c4267f | |
| parent | b8c6b645563d641df91fdcfd84a9c73c91d75b61 (diff) | |
| download | lwn-c2b00852fbae4f8c45c2651530ded3bd01bde814.tar.gz lwn-c2b00852fbae4f8c45c2651530ded3bd01bde814.zip | |
[PATCH] md: return a non-zero error to bi_end_io as appropriate in raid5
Currently raid5 depends on clearing the BIO_UPTODATE flag to signal an error
to higher levels. While this should be sufficient, it is safer to explicitly
set the error code as well - less room for confusion.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | drivers/md/raid5.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 347caab99ca0..377f8bc9b78b 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1818,7 +1818,9 @@ static void handle_stripe5(struct stripe_head *sh) return_bi = bi->bi_next; bi->bi_next = NULL; bi->bi_size = 0; - bi->bi_end_io(bi, bytes, 0); + bi->bi_end_io(bi, bytes, + test_bit(BIO_UPTODATE, &bi->bi_flags) + ? 0 : -EIO); } for (i=disks; i-- ;) { int rw; @@ -2359,7 +2361,9 @@ static void handle_stripe6(struct stripe_head *sh, struct page *tmp_page) return_bi = bi->bi_next; bi->bi_next = NULL; bi->bi_size = 0; - bi->bi_end_io(bi, bytes, 0); + bi->bi_end_io(bi, bytes, + test_bit(BIO_UPTODATE, &bi->bi_flags) + ? 0 : -EIO); } for (i=disks; i-- ;) { int rw; @@ -2859,7 +2863,9 @@ static int make_request(request_queue_t *q, struct bio * bi) if ( rw == WRITE ) md_write_end(mddev); bi->bi_size = 0; - bi->bi_end_io(bi, bytes, 0); + bi->bi_end_io(bi, bytes, + test_bit(BIO_UPTODATE, &bi->bi_flags) + ? 0 : -EIO); } return 0; } @@ -3127,7 +3133,9 @@ static int retry_aligned_read(raid5_conf_t *conf, struct bio *raid_bio) int bytes = raid_bio->bi_size; raid_bio->bi_size = 0; - raid_bio->bi_end_io(raid_bio, bytes, 0); + raid_bio->bi_end_io(raid_bio, bytes, + test_bit(BIO_UPTODATE, &raid_bio->bi_flags) + ? 0 : -EIO); } if (atomic_dec_and_test(&conf->active_aligned_reads)) wake_up(&conf->wait_for_stripe); |