write_inode_now(): avoid unnecessary synchronous write

We shouldn't use WB_SYNC_ALL if the caller is asking for asynchronous
treatment.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index db80ce9eb1d07896fb3ddd5f545ed8876dc8b2fa..c0076077d33874d0d63322d7c698ccbb04e4ed78 100644 (file)
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -655,7 +655,7 @@ int write_inode_now(struct inode *inode, int sync)
        int ret;
        struct writeback_control wbc = {
                .nr_to_write = LONG_MAX,
-               .sync_mode = WB_SYNC_ALL,
+               .sync_mode = sync ? WB_SYNC_ALL : WB_SYNC_NONE,
                .range_start = 0,
                .range_end = LLONG_MAX,
        };