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authorLatchesar Ionkov <lucho@ionkov.net>2006-01-08 01:05:00 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 20:14:06 -0800
commit531b1094b74365dcc55fa464d28a9a2497ae825d (patch)
treea0384dabe3be1c844166d028b3ef7c21c3dfe5fc /fs/9p/conv.h
parentd8da097afb765654c866062148fd98b11db9003e (diff)
downloadop-kernel-dev-531b1094b74365dcc55fa464d28a9a2497ae825d.zip
op-kernel-dev-531b1094b74365dcc55fa464d28a9a2497ae825d.tar.gz
[PATCH] v9fs: zero copy implementation
Performance enhancement reducing the number of copies in the data and stat paths. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/9p/conv.h')
-rw-r--r--fs/9p/conv.h28
1 files changed, 22 insertions, 6 deletions
diff --git a/fs/9p/conv.h b/fs/9p/conv.h
index d5e33e1..26a736e 100644
--- a/fs/9p/conv.h
+++ b/fs/9p/conv.h
@@ -1,8 +1,9 @@
/*
* linux/fs/9p/conv.h
*
- * 9P protocol conversion definitions
+ * 9P protocol conversion definitions.
*
+ * Copyright (C) 2005 by Latchesar Ionkov <lucho@ionkov.net>
* Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
* Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
*
@@ -25,11 +26,26 @@
*/
int v9fs_deserialize_stat(void *buf, u32 buflen, struct v9fs_stat *stat,
- u32 statlen, int extended);
-int v9fs_serialize_fcall(struct v9fs_fcall *tcall, void *buf, u32 buflen,
int extended);
int v9fs_deserialize_fcall(void *buf, u32 buflen, struct v9fs_fcall *rcall,
- int rcalllen, int extended);
+ int extended);
+
+void v9fs_set_tag(struct v9fs_fcall *fc, u16 tag);
-/* this one is actually in error.c right now */
-int v9fs_errstr2errno(char *errstr);
+struct v9fs_fcall *v9fs_create_tversion(u32 msize, char *version);
+struct v9fs_fcall *v9fs_create_tauth(u32 afid, char *uname, char *aname);
+struct v9fs_fcall *v9fs_create_tattach(u32 fid, u32 afid, char *uname,
+ char *aname);
+struct v9fs_fcall *v9fs_create_tflush(u16 oldtag);
+struct v9fs_fcall *v9fs_create_twalk(u32 fid, u32 newfid, u16 nwname,
+ char **wnames);
+struct v9fs_fcall *v9fs_create_topen(u32 fid, u8 mode);
+struct v9fs_fcall *v9fs_create_tcreate(u32 fid, char *name, u32 perm, u8 mode);
+struct v9fs_fcall *v9fs_create_tread(u32 fid, u64 offset, u32 count);
+struct v9fs_fcall *v9fs_create_twrite(u32 fid, u64 offset, u32 count,
+ const char __user *data);
+struct v9fs_fcall *v9fs_create_tclunk(u32 fid);
+struct v9fs_fcall *v9fs_create_tremove(u32 fid);
+struct v9fs_fcall *v9fs_create_tstat(u32 fid);
+struct v9fs_fcall *v9fs_create_twstat(u32 fid, struct v9fs_wstat *wstat,
+ int extended);
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