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(parent: 35d5f9e) | patch
md: add blktrace event for writes to superblock
authorShaohua Li <shli@fb.com>
Fri, 18 Nov 2016 17:44:08 +0000 (09:44 -0800)
committerShaohua Li <shli@fb.com>
Fri, 18 Nov 2016 17:47:57 +0000 (09:47 -0800)
commit42bb720d42e753bd27108fd852ef9683595d8654
treeabdc28fb557c2158f005a6f271c60c983562c43etree | snapshot
parent35d5f9e83e72b764a31607fb382017c047f1e40bcommit | diff
md: add blktrace event for writes to superblock

superblock write is an expensive operation. With raid5-cache, it can be called
regularly. Tracing to help performance debug.

Signed-off-by: Shaohua Li <shli@fb.com>
Cc: NeilBrown <neilb@suse.com>
drivers/md/md.c diff | blob | history
Linux Kernel Source Tree.