Commit 5cadfbd5 authored by Miklos Szeredi's avatar Miklos Szeredi
Browse files

fuse: add feature flag for expire-only 



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: 4f8d3702 ("fuse: add "expire only" mode to FUSE_NOTIFY_INVAL_ENTRY")
Cc: <stable@vger.kernel.org> # v6.2
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent ac9a7868

fs/fuse/inode.c

+2 −1
Original line number Diff line number Diff line
@@ -1254,7 +1254,8 @@ void fuse_send_init(struct fuse_mount *fm) 
		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;

include/uapi/linux/fuse.h

+3 −0
Original line number Diff line number Diff line
@@ -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