46 lines
1.4 KiB
Diff
46 lines
1.4 KiB
Diff
From: Miklos Szeredi <mszeredi@redhat.com>
|
|
Subject: libfuse: add feature flag for expire-only
|
|
|
|
Add the FUSE_HAS_EXPIRE_ONLY flag. This should be used to set the
|
|
FUSE_CAP_EXPIRE_ONLY capability flag on the low level API instead of
|
|
checking for the version.
|
|
|
|
Checking the version doesn't work if the feature is backported to an
|
|
earlier kernel.
|
|
|
|
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
|
|
---
|
|
include/fuse_kernel.h | 2 ++
|
|
lib/fuse_lowlevel.c | 2 +-
|
|
2 files changed, 3 insertions(+), 1 deletion(-)
|
|
|
|
--- a/include/fuse_kernel.h
|
|
+++ b/include/fuse_kernel.h
|
|
@@ -248,6 +248,7 @@
|
|
* FUSE_POSIX_ACL: filesystem supports posix acls
|
|
* FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages
|
|
* FUSE_CACHE_SYMLINKS: cache READLINK responses
|
|
+ * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation
|
|
*/
|
|
#define FUSE_ASYNC_READ (1 << 0)
|
|
#define FUSE_POSIX_LOCKS (1 << 1)
|
|
@@ -272,6 +273,7 @@
|
|
#define FUSE_MAX_PAGES (1 << 22)
|
|
#define FUSE_CACHE_SYMLINKS (1 << 23)
|
|
#define FUSE_INIT_EXT (1 << 30)
|
|
+#define FUSE_HAS_EXPIRE_ONLY (1ULL << 35)
|
|
|
|
/**
|
|
* CUSE INIT request/reply flags
|
|
--- a/lib/fuse_lowlevel.c
|
|
+++ b/lib/fuse_lowlevel.c
|
|
@@ -2008,7 +2008,7 @@ void do_init(fuse_req_t req, fuse_ino_t
|
|
bufsize = max_bufsize;
|
|
}
|
|
}
|
|
- if (arg->minor >= 38)
|
|
+ if (inargflags & FUSE_HAS_EXPIRE_ONLY)
|
|
se->conn.capable |= FUSE_CAP_EXPIRE_ONLY;
|
|
} else {
|
|
se->conn.max_readahead = 0;
|