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| author | Ming Lei <tom.leiming@gmail.com> | 2017-03-17 00:12:22 +0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-03-24 10:41:36 -0700 |
| commit | c85ba149de4bd14aa028ac824f9f12aeded28b86 (patch) | |
| tree | 8ec935d6b5b242e9174f73249bca6f55f2b1b366 /drivers/md/raid10.c | |
| parent | 3560741e316b3ea52cfb27901ae284921445180f (diff) | |
| download | linux-stable-c85ba149de4bd14aa028ac824f9f12aeded28b86.tar.gz linux-stable-c85ba149de4bd14aa028ac824f9f12aeded28b86.tar.bz2 linux-stable-c85ba149de4bd14aa028ac824f9f12aeded28b86.zip | |
md: raid1/raid10: don't handle failure of bio_add_page()
All bio_add_page() is for adding one page into resync bio,
which is big enough to hold RESYNC_PAGES pages, and
the current bio_add_page() doesn't check queue limit any more,
so it won't fail at all.
remove unused label (shaohua)
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 41 |
1 files changed, 10 insertions, 31 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 28c62e0c42aa..6c9783ba85db 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3413,27 +3413,16 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr, if (len == 0) break; for (bio= biolist ; bio ; bio=bio->bi_next) { - struct bio *bio2; page = bio->bi_io_vec[bio->bi_vcnt].bv_page; - if (bio_add_page(bio, page, len, 0)) - continue; - - /* stop here */ - bio->bi_io_vec[bio->bi_vcnt].bv_page = page; - for (bio2 = biolist; - bio2 && bio2 != bio; - bio2 = bio2->bi_next) { - /* remove last page from this bio */ - bio2->bi_vcnt--; - bio2->bi_iter.bi_size -= len; - bio_clear_flag(bio2, BIO_SEG_VALID); - } - goto bio_full; + /* + * won't fail because the vec table is big enough + * to hold all these pages + */ + bio_add_page(bio, page, len, 0); } nr_sectors += len>>9; sector_nr += len>>9; } while (biolist->bi_vcnt < RESYNC_PAGES); - bio_full: r10_bio->sectors = nr_sectors; while (biolist) { @@ -4502,25 +4491,15 @@ read_more: if (len > PAGE_SIZE) len = PAGE_SIZE; for (bio = blist; bio ; bio = bio->bi_next) { - struct bio *bio2; - if (bio_add_page(bio, page, len, 0)) - continue; - - /* Didn't fit, must stop */ - for (bio2 = blist; - bio2 && bio2 != bio; - bio2 = bio2->bi_next) { - /* Remove last page from this bio */ - bio2->bi_vcnt--; - bio2->bi_iter.bi_size -= len; - bio_clear_flag(bio2, BIO_SEG_VALID); - } - goto bio_full; + /* + * won't fail because the vec table is big enough + * to hold all these pages + */ + bio_add_page(bio, page, len, 0); } sector_nr += len >> 9; nr_sectors += len >> 9; } -bio_full: rcu_read_unlock(); r10_bio->sectors = nr_sectors; |