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[0/3] optimize writecache_writeback for performance

Message ID 20190825072433.2628-1-yehs2007@zoho.com (mailing list archive)
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Series optimize writecache_writeback for performance | expand

Message

Huaisheng Ye Aug. 25, 2019, 7:24 a.m. UTC 
From: Huaisheng Ye <yehs1@lenovo.com>

Patch 1 and 2 are used for cleaning the code, and they have got
Acked-by from Mikulas.

Patch 3 is used for performance optimization when writeback_all,
which could save more than half of time.
Of course, if the blocks in writecache are more uncontinuous and
disordered, the more performance improvement would be gained from
this patch.

Huaisheng Ye (3):
  dm writecache: remove unused member pointer in writeback_struct
  dm writecache: add unlikely for getting two block with same LBA
  dm writecache: optimize performance by sorting the blocks for
    writeback_all

 drivers/md/dm-writecache.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)