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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 10:33:36 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 10:33:36 -0700 |
commit | 096a705bbc080a4041636d07514560da8d78acbe (patch) | |
tree | 38c3c01225709ffa53419083ea6332f8a72610de /block/blk-core.c | |
parent | fea80311a939a746533a6d7e7c3183729d6a3faf (diff) | |
parent | 5757a6d76cdf6dda2a492c09b985c015e86779b1 (diff) | |
download | blackbird-op-linux-096a705bbc080a4041636d07514560da8d78acbe.tar.gz blackbird-op-linux-096a705bbc080a4041636d07514560da8d78acbe.zip |
Merge branch 'for-3.1/core' of git://git.kernel.dk/linux-block
* 'for-3.1/core' of git://git.kernel.dk/linux-block: (24 commits)
block: strict rq_affinity
backing-dev: use synchronize_rcu_expedited instead of synchronize_rcu
block: fix patch import error in max_discard_sectors check
block: reorder request_queue to remove 64 bit alignment padding
CFQ: add think time check for group
CFQ: add think time check for service tree
CFQ: move think time check variables to a separate struct
fixlet: Remove fs_excl from struct task.
cfq: Remove special treatment for metadata rqs.
block: document blk_plug list access
block: avoid building too big plug list
compat_ioctl: fix make headers_check regression
block: eliminate potential for infinite loop in blkdev_issue_discard
compat_ioctl: fix warning caused by qemu
block: flush MEDIA_CHANGE from drivers on close(2)
blk-throttle: Make total_nr_queued unsigned
block: Add __attribute__((format(printf...) and fix fallout
fs/partitions/check.c: make local symbols static
block:remove some spare spaces in genhd.c
block:fix the comment error in blkdev.h
...
Diffstat (limited to 'block/blk-core.c')
-rw-r--r-- | block/blk-core.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 1d49e1c7c905..f8cb09951830 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1282,10 +1282,8 @@ get_rq: init_request_from_bio(req, bio); if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags) || - bio_flagged(bio, BIO_CPU_AFFINE)) { - req->cpu = blk_cpu_to_group(get_cpu()); - put_cpu(); - } + bio_flagged(bio, BIO_CPU_AFFINE)) + req->cpu = smp_processor_id(); plug = current->plug; if (plug) { @@ -1305,7 +1303,10 @@ get_rq: plug->should_sort = 1; } list_add_tail(&req->queuelist, &plug->list); + plug->count++; drive_stat_acct(req, 1); + if (plug->count >= BLK_MAX_REQUEST_COUNT) + blk_flush_plug_list(plug, false); } else { spin_lock_irq(q->queue_lock); add_acct_request(q, req, where); @@ -2629,6 +2630,7 @@ void blk_start_plug(struct blk_plug *plug) INIT_LIST_HEAD(&plug->list); INIT_LIST_HEAD(&plug->cb_list); plug->should_sort = 0; + plug->count = 0; /* * If this is a nested plug, don't actually assign it. It will be @@ -2712,6 +2714,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool from_schedule) return; list_splice_init(&plug->list, &list); + plug->count = 0; if (plug->should_sort) { list_sort(NULL, &list, plug_rq_cmp); |