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fusefs: raise protocol level to 7.13

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This protocol version adds one new feature: the ability for the server to
set the maximum number of background requests and a "congestion threshold"
with ill-defined properties.  I don't know of any fuse file systems in ports
that use this feature, so I'm not implementing it.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Alan Somers 2019-06-20 21:29:28 +00:00
parent a1c9f4ad0d
commit 2ffddc5ee9
2 changed files with 12 additions and 2 deletions
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4
sys/fs/fuse/fuse_internal.c
View File

@ -921,6 +921,10 @@ fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio)
* Don't bother to check FUSE_BIG_WRITES, because it's
* redundant with max_write
*/
/*
* max_background and congestion_threshold are not
* implemented
*/
} else {
err = EINVAL;
}

10
sys/fs/fuse/fuse_kernel.h
View File

@ -57,6 +57,10 @@
* - add umask flag to input argument of open, mknod and mkdir
* - add notification messages for invalidation of inodes and
* directory entries
*
* 7.13
* - make max number of background requests and congestion threshold
* tunables
*/
#ifndef _FUSE_FUSE_KERNEL_H
@ -68,6 +72,7 @@
#define __s64 int64_t
#define __u32 uint32_t
#define __s32 int32_t
#define __u16 uint16_t
#else
#include <linux/types.h>
#endif
@ -76,7 +81,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 12
#define FUSE_KERNEL_MINOR_VERSION 13
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@ -476,7 +481,8 @@ struct fuse_init_out {
__u32 minor;
__u32 max_readahead;
__u32 flags;
__u32 unused;
__u16 max_background;
__u16 congestion_threshold;
__u32 max_write;
};