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| author |   Ravishankar N <ravishankar@redhat.com> | 2015-06-30 23:40:22 +0530 |
|---|---|---|
| committer |   Miklos Szeredi <miklos@szeredi.hu> | 2015-11-10 10:32:37 +0100 |
| commit | 0b5da8db145bfd44266ac964a2636a0cf8d7c286 (patch) | |
| tree | 23e46abfcb58f4b744aeab42a8c3a62e141b399b /include/uapi/linux/fuse.h | |
| parent | fuse: break infinite loop in fuse_fill_write_pages() (diff) | |
| download | linux-dev-0b5da8db145bfd44266ac964a2636a0cf8d7c286.tar.xz linux-dev-0b5da8db145bfd44266ac964a2636a0cf8d7c286.zip | |
fuse: add support for SEEK_HOLE and SEEK_DATA in lseek
A useful performance improvement for accessing virtual machine images
via FUSE mount.
See https://bugzilla.redhat.com/show_bug.cgi?id=1220173 for a use-case
for glusterFS.
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Diffstat (limited to 'include/uapi/linux/fuse.h')
| -rw-r--r-- | include/uapi/linux/fuse.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h index c9aca042e61d..5974fae54e12 100644 --- a/include/uapi/linux/fuse.h +++ b/include/uapi/linux/fuse.h @@ -102,6 +102,9 @@ * - add ctime and ctimensec to fuse_setattr_in * - add FUSE_RENAME2 request * - add FUSE_NO_OPEN_SUPPORT flag + * + * 7.24 + * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support */ #ifndef _LINUX_FUSE_H @@ -137,7 +140,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 23 +#define FUSE_KERNEL_MINOR_VERSION 24 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -358,6 +361,7 @@ enum fuse_opcode { FUSE_FALLOCATE = 43, FUSE_READDIRPLUS = 44, FUSE_RENAME2 = 45, + FUSE_LSEEK = 46, /* CUSE specific operations */ CUSE_INIT = 4096, @@ -758,4 +762,15 @@ struct fuse_notify_retrieve_in { /* Device ioctls: */ #define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t) +struct fuse_lseek_in { + uint64_t fh; + uint64_t offset; + uint32_t whence; + uint32_t padding; +}; + +struct fuse_lseek_out { + uint64_t offset; +}; + #endif /* _LINUX_FUSE_H */ |