diff options
| author | Feng Shuo <steve.shuo.feng@gmail.com> | 2013-01-04 16:23:30 +0800 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2013-02-06 17:27:28 +0100 |
| commit | 9ba76b906498d443eb811b8e88e2b92910893d13 (patch) | |
| tree | 20b6ed234186b1ba0ed432e9da801185a9a782f9 /lib/fuse_lowlevel.c | |
| parent | 06b1100acabe011ce632b1a97819cde41d66d0ad (diff) | |
| download | libfuse-9ba76b906498d443eb811b8e88e2b92910893d13.tar.gz | |
libfuse: Add '[no_]auto_inval_data' mount option
Several caching logic changes have been made on the kernel side
to better support network-based fuse filesystems. These include
kernel side mtime checking and read path cache revalidation. The
new caching logic is enabled through the FUSE_AUTO_INVAL_DATA
init flag. Export this to the user via the '[no_]auto_inval_data'
mount option.
Signed-off-by: Feng Shuo <steve.shuo.feng@gmail.com>
Diffstat (limited to 'lib/fuse_lowlevel.c')
| -rw-r--r-- | lib/fuse_lowlevel.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c index e28cce3..568cf47 100644 --- a/lib/fuse_lowlevel.c +++ b/lib/fuse_lowlevel.c @@ -1804,6 +1804,8 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) f->conn.capable |= FUSE_CAP_DONT_MASK; if (arg->flags & FUSE_FLOCK_LOCKS) f->conn.capable |= FUSE_CAP_FLOCK_LOCKS; + if (arg->flags & FUSE_AUTO_INVAL_DATA) + f->conn.capable |= FUSE_CAP_AUTO_INVAL_DATA; } else { f->conn.async_read = 0; f->conn.max_readahead = 0; @@ -1834,6 +1836,8 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) f->conn.want |= FUSE_CAP_FLOCK_LOCKS; if (f->big_writes) f->conn.want |= FUSE_CAP_BIG_WRITES; + if (f->auto_inval_data) + f->conn.want |= FUSE_CAP_AUTO_INVAL_DATA; if (bufsize < FUSE_MIN_READ_BUFFER) { fprintf(stderr, "fuse: warning: buffer size too small: %zu\n", @@ -1855,6 +1859,8 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) f->conn.want &= ~FUSE_CAP_SPLICE_WRITE; if (f->no_splice_move) f->conn.want &= ~FUSE_CAP_SPLICE_MOVE; + if (f->no_auto_inval_data) + f->conn.want &= ~FUSE_CAP_AUTO_INVAL_DATA; if (f->conn.async_read || (f->conn.want & FUSE_CAP_ASYNC_READ)) outarg.flags |= FUSE_ASYNC_READ; @@ -1870,6 +1876,8 @@ static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) outarg.flags |= FUSE_DONT_MASK; if (f->conn.want & FUSE_CAP_FLOCK_LOCKS) outarg.flags |= FUSE_FLOCK_LOCKS; + if (f->conn.want & FUSE_CAP_AUTO_INVAL_DATA) + outarg.flags |= FUSE_AUTO_INVAL_DATA; outarg.max_readahead = f->conn.max_readahead; outarg.max_write = f->conn.max_write; if (f->conn.proto_minor >= 13) { @@ -2491,6 +2499,8 @@ static const struct fuse_opt fuse_ll_opts[] = { { "no_splice_move", offsetof(struct fuse_ll, no_splice_move), 1}, { "splice_read", offsetof(struct fuse_ll, splice_read), 1}, { "no_splice_read", offsetof(struct fuse_ll, no_splice_read), 1}, + { "auto_inval_data", offsetof(struct fuse_ll, auto_inval_data), 1}, + { "no_auto_inval_data", offsetof(struct fuse_ll, no_auto_inval_data), 1}, FUSE_OPT_KEY("max_read=", FUSE_OPT_KEY_DISCARD), FUSE_OPT_KEY("-h", KEY_HELP), FUSE_OPT_KEY("--help", KEY_HELP), @@ -2522,6 +2532,7 @@ static void fuse_ll_help(void) " -o [no_]splice_write use splice to write to the fuse device\n" " -o [no_]splice_move move data while splicing to the fuse device\n" " -o [no_]splice_read use splice to read from the fuse device\n" +" -o [no_]auto_inval_data use automatic kernel cache invalidation logic\n" ); } |