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| author | Chao Yu <chao2.yu@samsung.com> | 2014-07-03 18:58:39 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-07-30 23:28:37 -0700 |
| commit | b3582c68920105e29d219714d8a6fbde25a43379 (patch) | |
| tree | 200ab9ca194921c8baad9954fee36eee072a772f /fs/f2fs/checkpoint.c | |
| parent | 65b85ccce03f17b3098273192b20885f3fead820 (diff) | |
| download | op-kernel-dev-b3582c68920105e29d219714d8a6fbde25a43379.zip op-kernel-dev-b3582c68920105e29d219714d8a6fbde25a43379.tar.gz | |
f2fs: reduce competition among node page writes
We do not need to block on ->node_write among different node page writers e.g.
fsync/flush, unless we have a node page writer from write_checkpoint.
So it's better use rw_semaphore instead of mutex type for ->node_write to
promote performance.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/checkpoint.c')
| -rw-r--r-- | fs/f2fs/checkpoint.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index cea20b8..6aeed5b 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -762,10 +762,10 @@ retry_flush_dents: * until finishing nat/sit flush. */ retry_flush_nodes: - mutex_lock(&sbi->node_write); + down_write(&sbi->node_write); if (get_pages(sbi, F2FS_DIRTY_NODES)) { - mutex_unlock(&sbi->node_write); + up_write(&sbi->node_write); sync_node_pages(sbi, 0, &wbc); goto retry_flush_nodes; } @@ -774,7 +774,7 @@ retry_flush_nodes: static void unblock_operations(struct f2fs_sb_info *sbi) { - mutex_unlock(&sbi->node_write); + up_write(&sbi->node_write); f2fs_unlock_all(sbi); } |
