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authorPeter Senna Tschudin <peter.senna@gmail.com>2012-09-12 17:06:40 +0200
committerJens Axboe <axboe@kernel.dk>2012-09-12 22:25:12 +0200
commitd41570b7469724005eb78448a69289900f911963 (patch)
treec2d92ce5c5c370a4a50770ee84ea4fd50a57e010
parente32463b2f7801d6561887c01db37b34958504635 (diff)
downloadvexpress-lsk-d41570b7469724005eb78448a69289900f911963.tar.gz
block/blk-tag.c: Remove useless kfree
Remove useless kfree() and clean up code related to the removal. The semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ position p1,p2; expression x; @@ if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } @unchanged exists@ position r.p1,r.p2; expression e <= r.x,x,e1; iterator I; statement S; @@ if (x@p1 == NULL) { ... when != I(x,...) S when != e = e1 when != e += e1 when != e -= e1 when != ++e when != --e when != e++ when != e-- when != &e kfree@p2(x); ... return ...; } @ok depends on unchanged exists@ position any r.p1; position r.p2; expression x; @@ ... when != true x@p1 == NULL kfree@p2(x); @depends on !ok && unchanged@ position r.p2; expression x; @@ *kfree@p2(x); // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-tag.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/block/blk-tag.c b/block/blk-tag.c
index 4af6f5cc116..cc345e1d8d4 100644
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -186,7 +186,8 @@ int blk_queue_init_tags(struct request_queue *q, int depth,
tags = __blk_queue_init_tags(q, depth);
if (!tags)
- goto fail;
+ return -ENOMEM;
+
} else if (q->queue_tags) {
rc = blk_queue_resize_tags(q, depth);
if (rc)
@@ -203,9 +204,6 @@ int blk_queue_init_tags(struct request_queue *q, int depth,
queue_flag_set_unlocked(QUEUE_FLAG_QUEUED, q);
INIT_LIST_HEAD(&q->tag_busy_list);
return 0;
-fail:
- kfree(tags);
- return -ENOMEM;
}
EXPORT_SYMBOL(blk_queue_init_tags);