diff mbox

[4/4] f2fs: use writepages->lock for WB_SYNC_ALL

Message ID 1453580206-61937-4-git-send-email-jaegeuk@kernel.org (mailing list archive)
State New, archived
Headers show

Commit Message

Jaegeuk Kim Jan. 23, 2016, 8:16 p.m. UTC 
If there are many writepages calls by multiple threads in background, we don't
need to serialize to merge all the bios, since it's background.
In such the case, it'd better to run writepages concurrently.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 fs/f2fs/data.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 7d9f1d9..8d0d9ec 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1403,7 +1403,7 @@  static int f2fs_write_data_pages(struct address_space *mapping,
 
 	diff = nr_pages_to_write(sbi, DATA, wbc);
 
-	if (!S_ISDIR(inode->i_mode)) {
+	if (!S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_ALL) {
 		mutex_lock(&sbi->writepages);
 		locked = true;
 	}