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[PATCH] fuse: more flexible caching

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Make data caching behavior selectable on a per-open basis instead of
per-mount.  Compatibility for the old mount options 'kernel_cache' and
'direct_io' is retained in the userspace library (version 2.4.0-pre1 or
later).

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Miklos Szeredi
2005-09-09 13:10:37 -07:00
committed by Linus Torvalds
parent 04730fef1f
commit 45323fb764
5 changed files with 18 additions and 59 deletions
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11
include/linux/fuse.h
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@@ -14,7 +14,7 @@
#define FUSE_KERNEL_VERSION 7
/** Minor version number of this interface */
#define FUSE_KERNEL_MINOR_VERSION 1
#define FUSE_KERNEL_MINOR_VERSION 2
/** The node ID of the root inode */
#define FUSE_ROOT_ID 1
@@ -63,6 +63,15 @@ struct fuse_kstatfs {
#define FATTR_MTIME (1 << 5)
#define FATTR_CTIME (1 << 6)
/**
* Flags returned by the OPEN request
*
* FOPEN_DIRECT_IO: bypass page cache for this open file
* FOPEN_KEEP_CACHE: don't invalidate the data cache on open
*/
#define FOPEN_DIRECT_IO (1 << 0)
#define FOPEN_KEEP_CACHE (1 << 1)
enum fuse_opcode {
FUSE_LOOKUP = 1,
FUSE_FORGET = 2, /* no reply */