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authorDmitry Monakhov <dmonakhov@openvz.org>2010-08-06 13:23:25 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-08-08 12:31:08 -0400
commit18edc8eaa68070771bdb2098260e44efe74de722 (patch)
tree989c6560f5e9bf5e7156853fccb9c4e1bb30adaf /block/blk-lib.c
parent3383977fadc4027f20907f6208a9033cd043adab (diff)
downloadlinux-linaro-stable-18edc8eaa68070771bdb2098260e44efe74de722.tar.gz
blkdev: fix blkdev_issue_zeroout return value
- If function called without barrier option retvalue is incorrect Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-lib.c')
-rw-r--r--block/blk-lib.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 5d793e143f3c..c1fc55a83ba1 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -145,7 +145,7 @@ static void bio_batch_end_io(struct bio *bio, int err)
int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
{
- int ret = 0;
+ int ret;
struct bio *bio;
struct bio_batch bb;
unsigned int sz, issued = 0;
@@ -163,11 +163,14 @@ int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
return ret;
}
submit:
+ ret = 0;
while (nr_sects != 0) {
bio = bio_alloc(gfp_mask,
min(nr_sects, (sector_t)BIO_MAX_PAGES));
- if (!bio)
+ if (!bio) {
+ ret = -ENOMEM;
break;
+ }
bio->bi_sector = sector;
bio->bi_bdev = bdev;
@@ -186,6 +189,7 @@ submit:
if (ret < (sz << 9))
break;
}
+ ret = 0;
issued++;
submit_bio(WRITE, bio);
}