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authorMiklos Szeredi <miklos@szeredi.hu>2005-09-09 13:10:37 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 14:03:47 -0700
commit45323fb76465a9576220c7427dbac7b1e7ad3caf (patch)
tree5d3e5f9a01cdaf6aaabe38520d5bd5b2d744acd5 /Documentation/filesystems/fuse.txt
parent04730fef1f9c7277e5c730b193e681ac095b0507 (diff)
[PATCH] fuse: more flexible caching
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>
Diffstat (limited to 'Documentation/filesystems/fuse.txt')
-rw-r--r--Documentation/filesystems/fuse.txt26
1 files changed, 0 insertions, 26 deletions
diff --git a/Documentation/filesystems/fuse.txt b/Documentation/filesystems/fuse.txt
index 83f96cf5696..6b5741e651a 100644
--- a/Documentation/filesystems/fuse.txt
+++ b/Documentation/filesystems/fuse.txt
@@ -80,32 +80,6 @@ Mount options
allowed to root, but this restriction can be removed with a
(userspace) configuration option.
-'kernel_cache'
-
- This option disables flushing the cache of the file contents on
- every open(). This should only be enabled on filesystems, where the
- file data is never changed externally (not through the mounted FUSE
- filesystem). Thus it is not suitable for network filesystems and
- other "intermediate" filesystems.
-
- NOTE: if this option is not specified (and neither 'direct_io') data
- is still cached after the open(), so a read() system call will not
- always initiate a read operation.
-
-'direct_io'
-
- This option disables the use of page cache (file content cache) in
- the kernel for this filesystem. This has several affects:
-
- - Each read() or write() system call will initiate one or more
- read or write operations, data will not be cached in the
- kernel.
-
- - The return value of the read() and write() system calls will
- correspond to the return values of the read and write
- operations. This is useful for example if the file size is not
- known in advance (before reading it).
-
'max_read=N'
With this option the maximum size of read operations can be set.