Commit 72d0d248 authored by Brian Foster's avatar Brian Foster Committed by Miklos Szeredi
Browse files

fuse: add FUSE_AUTO_INVAL_DATA init flag 



FUSE_AUTO_INVAL_DATA is provided to enable updated/auto cache
invalidation logic.

Signed-off-by: default avatarBrian Foster <bfoster@redhat.com>
Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
parent 84a1caf1

fs/fuse/fuse_i.h

+3 −0
Original line number Diff line number Diff line
@@ -484,6 +484,9 @@ struct fuse_conn { 
	/** Is fallocate not implemented by fs? */

	unsigned no_fallocate:1;



	/** Use enhanced/automatic page cache invalidation. */

	unsigned auto_inval_data:1;



	/** The number of requests waiting for completion */

	atomic_t num_waiting;

fs/fuse/inode.c

+3 −1
Original line number Diff line number Diff line
@@ -834,6 +834,8 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) 
				fc->big_writes = 1;

			if (arg->flags & FUSE_DONT_MASK)

				fc->dont_mask = 1;

			if (arg->flags & FUSE_AUTO_INVAL_DATA)

				fc->auto_inval_data = 1;

		} else {

			ra_pages = fc->max_read / PAGE_CACHE_SIZE;

			fc->no_lock = 1;
@@ -859,7 +861,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) 
	arg->max_readahead = fc->bdi.ra_pages * PAGE_CACHE_SIZE;

	arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |

		FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |

		FUSE_FLOCK_LOCKS;

		FUSE_FLOCK_LOCKS | FUSE_AUTO_INVAL_DATA;

	req->in.h.opcode = FUSE_INIT;

	req->in.numargs = 1;

	req->in.args[0].size = sizeof(*arg);

include/linux/fuse.h

+6 −1
Original line number Diff line number Diff line
@@ -57,6 +57,9 @@ 
 *

 * 7.19

 *  - add FUSE_FALLOCATE

 *

 * 7.20

 *  - add FUSE_AUTO_INVAL_DATA

 */



#ifndef _LINUX_FUSE_H
@@ -88,7 +91,7 @@ 
#define FUSE_KERNEL_VERSION 7



/** Minor version number of this interface */

#define FUSE_KERNEL_MINOR_VERSION 19

#define FUSE_KERNEL_MINOR_VERSION 20



/** The node ID of the root inode */

#define FUSE_ROOT_ID 1
@@ -167,6 +170,7 @@ struct fuse_file_lock { 
 * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".."

 * FUSE_DONT_MASK: don't apply umask to file mode on create operations

 * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks

 * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages

 */

#define FUSE_ASYNC_READ		(1 << 0)

#define FUSE_POSIX_LOCKS	(1 << 1)
@@ -176,6 +180,7 @@ struct fuse_file_lock { 
#define FUSE_BIG_WRITES		(1 << 5)

#define FUSE_DONT_MASK		(1 << 6)

#define FUSE_FLOCK_LOCKS	(1 << 10)

#define FUSE_AUTO_INVAL_DATA	(1 << 12)



/**

 * CUSE INIT request/reply flags