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| author | Miklos Szeredi <mszeredi@suse.cz> | 2013-05-01 14:37:21 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2013-05-01 14:37:21 +0200 |
| commit | 60b9df7a54804a965850db00beec4d3a2c002536 (patch) | |
| tree | ce3519c0708d6dd4113707c36a4ebdc6501542ef /include/uapi/linux/fuse.h | |
| parent | efb9fa9e911b23c7ea5330215bda778a7c69dba8 (diff) | |
| download | lwn-60b9df7a54804a965850db00beec4d3a2c002536.tar.gz lwn-60b9df7a54804a965850db00beec4d3a2c002536.zip | |
fuse: add flag to turn on async direct IO
Without async DIO write requests to a single file were always serialized.
With async DIO that's no longer the case.
So don't turn on async DIO by default for fear of breaking backward
compatibility.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'include/uapi/linux/fuse.h')
| -rw-r--r-- | include/uapi/linux/fuse.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h index 706d035fa748..60bb2f9f7b74 100644 --- a/include/uapi/linux/fuse.h +++ b/include/uapi/linux/fuse.h @@ -90,6 +90,9 @@ * 7.21 * - add FUSE_READDIRPLUS * - send the requested events in POLL request + * + * 7.22 + * - add FUSE_ASYNC_DIO */ #ifndef _LINUX_FUSE_H @@ -125,7 +128,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 21 +#define FUSE_KERNEL_MINOR_VERSION 22 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -215,6 +218,7 @@ struct fuse_file_lock { * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) * FUSE_READDIRPLUS_AUTO: adaptive readdirplus + * FUSE_ASYNC_DIO: asynchronous direct I/O submission */ #define FUSE_ASYNC_READ (1 << 0) #define FUSE_POSIX_LOCKS (1 << 1) @@ -231,6 +235,7 @@ struct fuse_file_lock { #define FUSE_AUTO_INVAL_DATA (1 << 12) #define FUSE_DO_READDIRPLUS (1 << 13) #define FUSE_READDIRPLUS_AUTO (1 << 14) +#define FUSE_ASYNC_DIO (1 << 15) /** * CUSE INIT request/reply flags |