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| author | Chao Yu <yuchao0@huawei.com> | 2018-04-04 17:35:13 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-31 11:31:45 -0700 |
| commit | 47cca3d62af20e1343cbd0a08b1f45e83892d82b (patch) | |
| tree | 1157f1c1146086effe880de333473d1f189f5b5f /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | f2fs: remove unmatched zero_user_segment when convert inline dentry (diff) | |
| download | linux-47cca3d62af20e1343cbd0a08b1f45e83892d82b.tar.gz linux-47cca3d62af20e1343cbd0a08b1f45e83892d82b.zip | |
f2fs: remove redundant block plug
For buffered IO, we don't need to use block plug to cache bio,
for direct IO, generic f2fs_direct_IO has already added block
plug, so let's remove redundant one in .write_iter.
As Yunlei described in his patch:
-f2fs_file_write_iter
-blk_start_plug
-__generic_file_write_iter
...
-do_blockdev_direct_IO
-blk_start_plug
...
-blk_finish_plug
...
-blk_finish_plug
which may conduct performance decrease in our platform
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions