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authorChristoph Hellwig <hch@lst.de>2014-05-27 20:59:48 +0200
committerJens Axboe <axboe@fb.com>2014-05-28 09:49:23 -0600
commita3bd77567cae6af700dcd245148befc73fc89a50 (patch)
tree465934c4f1fb0687da5d862e5221d54c0d34eb2f /block/blk-mq-tag.c
parent5dee857720db15e2c8ef0c03f7eeac00c4c63cb2 (diff)
downloadkernel-a3bd77567cae6af700dcd245148befc73fc89a50.tar.gz
blk-mq: remove blk_mq_wait_for_tags
The current logic for blocking tag allocation is rather confusing, as we first allocated and then free again a tag in blk_mq_wait_for_tags, just to attempt a non-blocking allocation and then repeat if someone else managed to grab the tag before us. Instead change blk_mq_alloc_request_pinned to simply do a blocking tag allocation itself and use the request we get back from it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq-tag.c')
-rw-r--r--block/blk-mq-tag.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 05e2baf4fa0d..0d0640d38a06 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -7,14 +7,6 @@
#include "blk-mq.h"
#include "blk-mq-tag.h"
-void blk_mq_wait_for_tags(struct blk_mq_hw_ctx *hctx, bool reserved)
-{
- int tag, zero = 0;
-
- tag = blk_mq_get_tag(hctx, &zero, __GFP_WAIT, reserved);
- blk_mq_put_tag(hctx, tag, &zero);
-}
-
static bool bt_has_free_tags(struct blk_mq_bitmap_tags *bt)
{
int i;