diff options
Diffstat (limited to 'fs/9p/v9fs.h')
| -rw-r--r-- | fs/9p/v9fs.h | 62 |
1 files changed, 43 insertions, 19 deletions
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index f3f74d197b5d..06a2514f0d88 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -31,29 +31,54 @@ #define V9FS_ACL_MASK V9FS_POSIX_ACL enum p9_session_flags { - V9FS_PROTO_2000U = 0x01, - V9FS_PROTO_2000L = 0x02, - V9FS_ACCESS_SINGLE = 0x04, - V9FS_ACCESS_USER = 0x08, - V9FS_ACCESS_CLIENT = 0x10, - V9FS_POSIX_ACL = 0x20 + V9FS_PROTO_2000U = 0x01, + V9FS_PROTO_2000L = 0x02, + V9FS_ACCESS_SINGLE = 0x04, + V9FS_ACCESS_USER = 0x08, + V9FS_ACCESS_CLIENT = 0x10, + V9FS_POSIX_ACL = 0x20, + V9FS_NO_XATTR = 0x40, + V9FS_IGNORE_QV = 0x80, /* ignore qid.version for cache hints */ + V9FS_DIRECT_IO = 0x100, + V9FS_SYNC = 0x200 }; -/* possible values of ->cache */ /** - * enum p9_cache_modes - user specified cache preferences - * @CACHE_NONE: do not cache data, dentries, or directory contents (default) - * @CACHE_LOOSE: cache data, dentries, and directory contents w/no consistency + * enum p9_cache_shortcuts - human readable cache preferences + * @CACHE_SC_NONE: disable all caches + * @CACHE_SC_READAHEAD: only provide caching for readahead + * @CACHE_SC_MMAP: provide caching to enable mmap + * @CACHE_SC_LOOSE: non-coherent caching for files and meta data + * @CACHE_SC_FSCACHE: persistent non-coherent caching for files and meta-data * - * eventually support loose, tight, time, session, default always none */ -enum p9_cache_modes { - CACHE_NONE, - CACHE_MMAP, - CACHE_LOOSE, - CACHE_FSCACHE, - nr__p9_cache_modes +enum p9_cache_shortcuts { + CACHE_SC_NONE = 0b00000000, + CACHE_SC_READAHEAD = 0b00000001, + CACHE_SC_MMAP = 0b00000101, + CACHE_SC_LOOSE = 0b00001111, + CACHE_SC_FSCACHE = 0b10001111, +}; + +/** + * enum p9_cache_bits - possible values of ->cache + * @CACHE_NONE: caches disabled + * @CACHE_FILE: file caching (open to close) + * @CACHE_META: meta-data and directory caching + * @CACHE_WRITEBACK: write-back caching for files + * @CACHE_LOOSE: don't check cache consistency + * @CACHE_FSCACHE: local persistent caches + * + */ + +enum p9_cache_bits { + CACHE_NONE = 0b00000000, + CACHE_FILE = 0b00000001, + CACHE_META = 0b00000010, + CACHE_WRITEBACK = 0b00000100, + CACHE_LOOSE = 0b00001000, + CACHE_FSCACHE = 0b10000000, }; /** @@ -62,7 +87,7 @@ enum p9_cache_modes { * @nodev: set to 1 to disable device mapping * @debug: debug level * @afid: authentication handle - * @cache: cache mode of type &p9_cache_modes + * @cache: cache mode of type &p9_cache_bits * @cachetag: the tag of the cache associated with this session * @fscache: session cookie associated with FS-Cache * @uname: string user name to mount hierarchy as @@ -112,7 +137,6 @@ struct v9fs_inode { struct netfs_inode netfs; /* Netfslib context and vfs inode */ struct p9_qid qid; unsigned int cache_validity; - struct p9_fid *writeback_fid; struct mutex v_mutex; }; |