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| author | Miklos Szeredi <mszeredi@redhat.com> | 2018-09-28 16:43:23 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-09-28 16:43:23 +0200 |
| commit | 6433b8998a21dc597002731c4ceb4144e856edc4 (patch) | |
| tree | 2792ae01ee8dbbed39292d55e1c4b3e3db51272d /include/uapi | |
| parent | fuse: split out readdir.c (diff) | |
| download | linux-6433b8998a21dc597002731c4ceb4144e856edc4.tar.xz linux-6433b8998a21dc597002731c4ceb4144e856edc4.zip | |
fuse: add FOPEN_CACHE_DIR
Add flag returned by OPENDIR request to allow kernel to cache directory
contents in page cache. The effect of FOPEN_CACHE_DIR is twofold:
a) if not already cached, it writes entries into the cache
b) if already cached, it allows reading entries from the cache
The FOPEN_KEEP_CACHE has the same effect as on regular files: unless this
flag is given the cache is cleared upon completion of open.
So FOPEN_KEEP_CACHE and FOPEN_KEEP_CACHE flags should be used together to
make use of the directory caching facility introduced in the following
patches.
The FUSE_AUTO_INVAL_DATA flag returned in INIT reply also has the same
affect on the directory cache as it has on data cache for regular files.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/fuse.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/fuse.h b/include/uapi/linux/fuse.h index d27b50a44f74..31a504f1ee60 100644 --- a/include/uapi/linux/fuse.h +++ b/include/uapi/linux/fuse.h @@ -119,6 +119,7 @@ * * 7.28 * - add FUSE_COPY_FILE_RANGE + * - add FOPEN_CACHE_DIR */ #ifndef _LINUX_FUSE_H @@ -222,10 +223,12 @@ struct fuse_file_lock { * FOPEN_DIRECT_IO: bypass page cache for this open file * FOPEN_KEEP_CACHE: don't invalidate the data cache on open * FOPEN_NONSEEKABLE: the file is not seekable + * FOPEN_CACHE_DIR: allow caching this directory */ #define FOPEN_DIRECT_IO (1 << 0) #define FOPEN_KEEP_CACHE (1 << 1) #define FOPEN_NONSEEKABLE (1 << 2) +#define FOPEN_CACHE_DIR (1 << 3) /** * INIT request/reply flags |