This is a note to let you know that I've just added the patch titled
cifs: release leases for deferred close handles when freezing
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cifs-release-leases-for-deferred-close-handles-when-freezing.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d39fc592ef8ae9a89c5e85c8d9f760937a57d5ba Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Wed, 10 May 2023 17:42:21 -0500
Subject: cifs: release leases for deferred close handles when freezing
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
Patches currently in stable-queue which might be from stfrench@xxxxxxxxxxxxx are
queue-5.15/cifs-fix-pcchunk-length-type-in-smb2_copychunk_range.patch
queue-5.15/smb3-fix-problem-remounting-a-share-after-shutdown.patch
queue-5.15/cifs-release-leases-for-deferred-close-handles-when-freezing.patch
queue-5.15/smb3-force-unmount-was-failing-to-close-deferred-close-files.patch
