Commit 25c13551 authored Jan 20, 2016 by Jaegeuk Kim

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>

parent b483fadf

fs/f2fs/data.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1402,7 +1402,7 @@ 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;
		}