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authorShaohua Li <shli@fb.com>2015-01-15 17:32:25 -0800
committerJens Axboe <axboe@fb.com>2015-01-23 14:15:46 -0700
commitee1b6f7aff94019c09e73837054979063f722046 (patch)
tree79c7b943d7c6d62fec1874afd2c50964de054aa0 /drivers/block
parentbb5c3cdda37aad22996d6da2addd58cadc0436c0 (diff)
downloadop-kernel-dev-ee1b6f7aff94019c09e73837054979063f722046.zip
op-kernel-dev-ee1b6f7aff94019c09e73837054979063f722046.tar.gz
block: support different tag allocation policy
The libata tag allocation is using a round-robin policy. Next patch will make libata use block generic tag allocation, so let's add a policy to tag allocation. Currently two policies: FIFO (default) and round-robin. Cc: Jens Axboe <axboe@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/osdblk.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 79aa179..e229425 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -423,7 +423,7 @@ static int osdblk_init_disk(struct osdblk_device *osdev)
}
/* switch queue to TCQ mode; allocate tag map */
- rc = blk_queue_init_tags(q, OSDBLK_MAX_REQ, NULL);
+ rc = blk_queue_init_tags(q, OSDBLK_MAX_REQ, NULL, BLK_TAG_ALLOC_FIFO);
if (rc) {
blk_cleanup_queue(q);
put_disk(disk);
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