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authorChengguang Xu <cgxu519@icloud.com>2018-01-30 10:02:30 +0800
committerIlya Dryomov <idryomov@gmail.com>2018-01-30 21:10:15 +0100
commit16515a6d54183349b858b9c05e483afc55fa7948 (patch)
tree97269e7e300a465eadae920907e5a8f5758315d8 /fs/ceph
parentaffff07739392920d3d2095212c72af220481b95 (diff)
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 <cgxu519@icloud.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/caps.c2
1 files changed, 1 insertions, 1 deletions
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) {