diff options
| author | Chao Yu <yuchao0@huawei.com> | 2018-06-04 18:20:36 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-06-05 00:33:20 +0300 |
| commit | c29fd0c0e26dacb7a33ad166587059818a94b4e0 (patch) | |
| tree | 6a25f17833047796fccde3cd7c4e17d35199e640 /fs/f2fs/file.c | |
| parent | aae764ece6076b0852b95943c40748569c7b8585 (diff) | |
| download | linux-c29fd0c0e26dacb7a33ad166587059818a94b4e0.tar.xz | |
f2fs: let sync node IO interrupt async one
Although mixed sync/async IOs can have continuous LBA, as they have
different IO priority, block IO scheduler will add them into different
queues and commit them separately, result in splited IOs which causes
wrose performance.
This patch gives high priority to synchronous IO of nodes, means that
once synchronous flow starts, it can interrupt asynchronous writeback
flow of system flusher, so more big IOs can be expected.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/file.c')
| -rw-r--r-- | fs/f2fs/file.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 74c326442565..16fd50abbf40 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -274,7 +274,9 @@ go_write: goto out; } sync_nodes: + atomic_inc(&sbi->wb_sync_req[NODE]); ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic); + atomic_dec(&sbi->wb_sync_req[NODE]); if (ret) goto out; |