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| author | Christoph Hellwig <hch@lst.de> | 2022-01-24 10:11:00 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-02-02 07:49:59 -0700 |
| commit | 7d8d0c658d48705fca35238a8ff601b7c5cbc0de (patch) | |
| tree | 4f641fdabdb90663b0a9182480e4c0433eecfea1 /drivers/block/xen-blkback | |
| parent | d7b78de2b1552e3e7ce3a069f075cc2729aa5c34 (diff) | |
| download | linux-7d8d0c658d48705fca35238a8ff601b7c5cbc0de.tar.gz linux-7d8d0c658d48705fca35238a8ff601b7c5cbc0de.tar.bz2 linux-7d8d0c658d48705fca35238a8ff601b7c5cbc0de.zip | |
xen-blkback: bio_alloc can't fail if it is allow to sleep
Remove handling of NULL returns from sleeping bio_alloc calls given that
those can't fail.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220124091107.642561-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/xen-blkback')
| -rw-r--r-- | drivers/block/xen-blkback/blkback.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 14e452896d04..6bb2ad769206 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -1327,9 +1327,6 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, seg[i].nsec << 9, seg[i].offset) == 0)) { bio = bio_alloc(GFP_KERNEL, bio_max_segs(nseg - i)); - if (unlikely(bio == NULL)) - goto fail_put_bio; - biolist[nbio++] = bio; bio_set_dev(bio, preq.bdev); bio->bi_private = pending_req; @@ -1346,9 +1343,6 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, BUG_ON(operation_flags != REQ_PREFLUSH); bio = bio_alloc(GFP_KERNEL, 0); - if (unlikely(bio == NULL)) - goto fail_put_bio; - biolist[nbio++] = bio; bio_set_dev(bio, preq.bdev); bio->bi_private = pending_req; @@ -1381,14 +1375,6 @@ static int dispatch_rw_block_io(struct xen_blkif_ring *ring, free_req(ring, pending_req); msleep(1); /* back off a bit */ return -EIO; - - fail_put_bio: - for (i = 0; i < nbio; i++) - bio_put(biolist[i]); - atomic_set(&pending_req->pendcnt, 1); - __end_block_io_op(pending_req, BLK_STS_RESOURCE); - msleep(1); /* back off a bit */ - return -EIO; } |