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block: simplify force plug flush code a little bit

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Cleaning up the code a little bit. attempt_plug_merge() traverses the plug
list anyway, we can do the request counting there, so stack size is reduced
a little bit.
The motivation here is I suspect if we should count the requests for each
queue (task could handle multiple disks in the meantime), but my test doesn't
show it's worthy doing. If somebody proves we should do it, below change
will make that more easier.

Signed-off-by: Shaohua Li <shli@kernel.org>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Shaohua Li
2011-08-24 16:04:34 +02:00
committed by Jens Axboe
parent a632716275
commit 56ebdaf2fa
2 changed files with 7 additions and 7 deletions
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include/linux/blkdev.h
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@@ -873,7 +873,6 @@ struct blk_plug {
struct list_head list;
struct list_head cb_list;
unsigned int should_sort;
unsigned int count;
};
#define BLK_MAX_REQUEST_COUNT 16