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| author | Bongkyu Kim | 2016-01-21 00:01:08 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2016-01-21 02:09:18 +0100 |
| commit | 06af1c52c9ea234e0b1266cc0b52c3e0c6c8fe9f (patch) | |
| tree | 6e32395e46be61e955546e673cc256e7a9e15bca /include/linux/writeback.h | |
| parent | proc read mm's {arg,env}_{start,end} with mmap semaphore taken. (diff) | |
| download | kernel-qcow2-linux-06af1c52c9ea234e0b1266cc0b52c3e0c6c8fe9f.tar.gz kernel-qcow2-linux-06af1c52c9ea234e0b1266cc0b52c3e0c6c8fe9f.tar.xz kernel-qcow2-linux-06af1c52c9ea234e0b1266cc0b52c3e0c6c8fe9f.zip | |
lz4: fix wrong compress buffer size for 64-bits
The current lz4 compress buffer is 16kb on 32-bits, 32kb on 64-bits
system. But, lz4 needs only 16kb on both. On 64-bits, this causes
wasted cpu cycles for additional memset during every compression.
In case of lz4hc, the current buffer size is (256kb + 8) on 32-bits,
(512kb + 16) on 64-bits. But, lz4hc needs only (256kb + 2 * pointer) on
both.
This patch fixes these wrong compress buffer sizes for 64-bits.
Signed-off-by: Bongkyu Kim <bongkyu.kim@lge.com>
Cc: Chanho Min <chanho.min@lge.com>
Cc: Yann Collet <yann.collet.73@gmail.com>
Cc: Kyungsik Lee <kyungsik.lee@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/writeback.h')
0 files changed, 0 insertions, 0 deletions