From 16515a6d54183349b858b9c05e483afc55fa7948 Mon Sep 17 00:00:00 2001 From: Chengguang Xu Date: Tue, 30 Jan 2018 10:02:30 +0800 Subject: ceph: improving efficiency of syncfs write_inode() could be called variety of reasons, in the case of syncfs(2) there is no need to wait for flush getting completed in write_inode(), ->sync_fs is for guaranteeing flush completion for all inodes at that point. Signed-off-by: Chengguang Xu Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov --- fs/ceph/caps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 8e66fb0e743d..6582c4507e6c 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2207,7 +2207,7 @@ int ceph_write_inode(struct inode *inode, struct writeback_control *wbc) u64 flush_tid; int err = 0; int dirty; - int wait = wbc->sync_mode == WB_SYNC_ALL; + int wait = (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync); dout("write_inode %p wait=%d\n", inode, wait); if (wait) { -- cgit v1.2.3-58-ga151