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ceph: improving efficiency of syncfs

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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 <[email protected]>
Reviewed-by: "Yan, Zheng" <[email protected]>
Signed-off-by: Ilya Dryomov <[email protected]>
This commit is contained in:
Chengguang Xu 2018-01-30 10:02:30 +08:00 • committed by Ilya Dryomov
commit 16515a6d54
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/caps.c
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@ -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) {