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authorOmar Sandoval <osandov@fb.com>2016-09-17 08:38:44 -0600
committerJens Axboe <axboe@fb.com>2016-09-17 08:38:44 -0600
commit88459642cba452630326b9cab1c651e09577d4e4 (patch)
treecd7ecd917b294a92ff827b0e7dab526f0069547f /block/blk-mq.h
parent703fd1c0f177219e3a84e6c095c31dc566514d81 (diff)
downloadop-kernel-dev-88459642cba452630326b9cab1c651e09577d4e4.zip
op-kernel-dev-88459642cba452630326b9cab1c651e09577d4e4.tar.gz
blk-mq: abstract tag allocation out into sbitmap library
This is a generally useful data structure, so make it available to anyone else who might want to use it. It's also a nice cleanup separating the allocation logic from the rest of the tag handling logic. The code is behind a new Kconfig option, CONFIG_SBITMAP, which is only selected by CONFIG_BLOCK for now. This should be a complete noop functionality-wise. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.h')
-rw-r--r--block/blk-mq.h9
1 files changed, 0 insertions, 9 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 9087b11..71831f9 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -63,15 +63,6 @@ extern void blk_mq_rq_timed_out(struct request *req, bool reserved);
void blk_mq_release(struct request_queue *q);
-/*
- * Basic implementation of sparser bitmap, allowing the user to spread
- * the bits over more cachelines.
- */
-struct blk_align_bitmap {
- unsigned long word;
- unsigned long depth;
-} ____cacheline_aligned_in_smp;
-
static inline struct blk_mq_ctx *__blk_mq_get_ctx(struct request_queue *q,
unsigned int cpu)
{
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