NFS: Block new writes while syncing data in nfs_getattr()

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
mariux64 · Mar 27, 2015 · 8c18d76 · 8c18d76
1 parent 5bb89b4
commit 8c18d76
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
@@ -649,7 +649,9 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 	trace_nfs_getattr_enter(inode);
 	/* Flush out writes to the server in order to update c/mtime.  */
 	if (S_ISREG(inode->i_mode)) {
+		mutex_lock(&inode->i_mutex);
 		err = nfs_sync_inode(inode);
+		mutex_unlock(&inode->i_mutex);
 		if (err)
 			goto out;
 	}