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authorMiklos Szeredi <mszeredi@suse.cz>2013-05-01 14:37:21 +0200
committerMiklos Szeredi <mszeredi@suse.cz>2013-05-01 14:37:21 +0200
commit60b9df7a54804a965850db00beec4d3a2c002536 (patch)
treece3519c0708d6dd4113707c36a4ebdc6501542ef /include/uapi
parentefb9fa9e911b23c7ea5330215bda778a7c69dba8 (diff)
downloadvexpress-lsk-60b9df7a54804a965850db00beec4d3a2c002536.tar.gz
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')
-rw-r--r--include/uapi/linux/fuse.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h
index 706d035fa74..60bb2f9f7b7 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