Commits
Jaegeuk Kim committed 25c13551519
f2fs: use writepages->lock for WB_SYNC_ALL 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>