This is a note to let you know that I've just added the patch titled
fuse: add feature flag for expire-only
to the 6.4-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:
fuse-add-feature-flag-for-expire-only.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5cadfbd5a11e5495cac217534c5f788168b1afd7 Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Mon, 27 Mar 2023 16:14:49 +0200
Subject: fuse: add feature flag for expire-only
From: Miklos Szeredi <mszeredi@xxxxxxxxxx>
commit 5cadfbd5a11e5495cac217534c5f788168b1afd7 upstream.
Add an init flag idicating whether the FUSE_EXPIRE_ONLY flag of
FUSE_NOTIFY_INVAL_ENTRY is effective.
This is needed for backports of this feature, otherwise the server could
just check the protocol version.
Fixes: 4f8d37020e1f ("fuse: add "expire only" mode to FUSE_NOTIFY_INVAL_ENTRY")
Cc: <stable@xxxxxxxxxxxxxxx> # v6.2
Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/fuse/inode.c | 3 ++-
include/uapi/linux/fuse.h | 3 +++
2 files changed, 5 insertions(+), 1 deletion(-)
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1254,7 +1254,8 @@ void fuse_send_init(struct fuse_mount *f
FUSE_ABORT_ERROR | FUSE_MAX_PAGES | FUSE_CACHE_SYMLINKS |
FUSE_NO_OPENDIR_SUPPORT | FUSE_EXPLICIT_INVAL_DATA |
FUSE_HANDLE_KILLPRIV_V2 | FUSE_SETXATTR_EXT | FUSE_INIT_EXT |
- FUSE_SECURITY_CTX | FUSE_CREATE_SUPP_GROUP;
+ FUSE_SECURITY_CTX | FUSE_CREATE_SUPP_GROUP |
+ FUSE_HAS_EXPIRE_ONLY;
#ifdef CONFIG_FUSE_DAX
if (fm->fc->dax)
flags |= FUSE_MAP_ALIGNMENT;
--- a/include/uapi/linux/fuse.h
+++ b/include/uapi/linux/fuse.h
@@ -206,6 +206,7 @@
* - add extension header
* - add FUSE_EXT_GROUPS
* - add FUSE_CREATE_SUPP_GROUP
+ * - add FUSE_HAS_EXPIRE_ONLY
*/
#ifndef _LINUX_FUSE_H
@@ -369,6 +370,7 @@ struct fuse_file_lock {
* FUSE_HAS_INODE_DAX: use per inode DAX
* FUSE_CREATE_SUPP_GROUP: add supplementary group info to create, mkdir,
* symlink and mknod (single group that matches parent)
+ * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation
*/
#define FUSE_ASYNC_READ (1 << 0)
#define FUSE_POSIX_LOCKS (1 << 1)
@@ -406,6 +408,7 @@ struct fuse_file_lock {
#define FUSE_SECURITY_CTX (1ULL << 32)
#define FUSE_HAS_INODE_DAX (1ULL << 33)
#define FUSE_CREATE_SUPP_GROUP (1ULL << 34)
+#define FUSE_HAS_EXPIRE_ONLY (1ULL << 35)
/**
* CUSE INIT request/reply flags
Patches currently in stable-queue which might be from mszeredi@xxxxxxxxxx are
queue-6.4/fuse-ioctl-translate-enosys-in-outarg.patch
queue-6.4/fuse-add-feature-flag-for-expire-only.patch
queue-6.4/fuse-revalidate-don-t-invalidate-if-interrupted.patch
queue-6.4/fuse-apply-flags2-only-when-userspace-set-the-fuse_init_ext.patch
