Commit d39fc592 authored by Steve French's avatar Steve French
Browse files

cifs: release leases for deferred close handles when freezing 



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: default avatarDavid Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 716a3cf3

fs/cifs/cifsfs.c

+15 −0
Original line number Diff line number Diff line
@@ -760,6 +760,20 @@ static void cifs_umount_begin(struct super_block *sb) 
	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)

{
@@ -798,6 +812,7 @@ static const struct super_operations cifs_super_ops = { 
	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