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authorChangman Lee <cm224.lee@samsung.com>2013-11-11 09:24:37 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-11-11 09:36:32 +0900
commit29e59c14ae5c21d25db1580d9651b5855d656a30 (patch)
tree28464aff2be40ae89b1b37c221529a8a23cbff09 /Documentation/filesystems
parent1d15bd2034c9b0f9ac88fa0e4cd33e0d792b0bb0 (diff)
f2fs: issue more large discard command
o Changes from v1 Use find_next(_zero)_bit suggested by jg.kim When f2fs issues discard command, if segment is contiguous, let's issue more large segment to gather adjacent segments. ** blktrace ** 179,1 0 5859 42.619023770 971 C D 131072 + 2097152 [0] 179,1 0 33665 108.840475468 971 C D 2228224 + 2494464 [0] 179,1 0 33671 109.131616427 971 C D 14909440 + 344064 [0] 179,1 0 33677 109.137100677 971 C D 15261696 + 4096 [0] Signed-off-by: Changman Lee <cm224.lee@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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