NFS: fsync() should report filesystem errors over EINTR/ERESTARTSYS

[ Upstream commit 9641d9bc9b75f11f70646f5c6ee9f5f519a1012e ]

If the commit to disk is interrupted, we should still first check for
filesystem errors so that we can report them in preference to the error
due to the signal.

Fixes: 2197e9b06c22 ("NFS: Fix up fsync() when the server rebooted")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 42a1699..018d29a 100644 (file)
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -208,15 +208,16 @@ static int
 nfs_file_fsync_commit(struct file *file, int datasync)
 {
        struct inode *inode = file_inode(file);
-       int ret;
+       int ret, ret2;
 
        dprintk("NFS: fsync file(%pD2) datasync %d\n", file, datasync);
 
        nfs_inc_stats(inode, NFSIOS_VFSFSYNC);
        ret = nfs_commit_inode(inode, FLUSH_SYNC);
-       if (ret < 0)
-               return ret;
-       return file_check_and_advance_wb_err(file);
+       ret2 = file_check_and_advance_wb_err(file);
+       if (ret2 < 0)
+               return ret2;
+       return ret;
 }
 
 int