From: Steve French <stfrench@xxxxxxxxxxxxx>
commit d39fc592ef8ae9a89c5e85c8d9f760937a57d5ba upstream.
We should not be caching closed files when freeze is invoked on an fs
(so we can release resources more gracefully).
Fixes xfstests generic/068 generic/390 generic/491
Reviewed-by: David Howells <dhowells@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/cifsfs.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -730,6 +730,20 @@ static void cifs_umount_begin(struct sup
return;
}
+static int cifs_freeze(struct super_block *sb)
+{
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+ struct cifs_tcon *tcon;
+
+ if (cifs_sb == NULL)
+ return 0;
+
+ tcon = cifs_sb_master_tcon(cifs_sb);
+
+ cifs_close_all_deferred_files(tcon);
+ return 0;
+}
+
#ifdef CONFIG_CIFS_STATS2
static int cifs_show_stats(struct seq_file *s, struct dentry *root)
{
@@ -761,6 +775,7 @@ static const struct super_operations cif
as opens */
.show_options = cifs_show_options,
.umount_begin = cifs_umount_begin,
+ .freeze_fs = cifs_freeze,
#ifdef CONFIG_CIFS_STATS2
.show_stats = cifs_show_stats,
#endif
