From ba3b225a126ebb3c6d4fe27c9f7c73aa4167001e Mon Sep 17 00:00:00 2001 From: Etienne Dublé Date: Sun, 20 Sep 2020 20:08:15 +0200 Subject: Allow caching symlinks in kernel page cache. (#551) This commit defines a new capability called `FUSE_CAP_CACHE_SYMLINKS`. It is off by default but you can now enable it by setting this flag in in the `want` field of the `fuse_conn_info` structure. When enabled, the kernel will save symlinks in its page cache, by making use of the feature introduced in kernel 4.20: https://github.com/torvalds/linux/commit/5571f1e65486be025f73fa6aa30fb03725d362a2 --- lib/fuse_lowlevel.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'lib/fuse_lowlevel.c') diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c index 21379c1..83510b3 100644 --- a/lib/fuse_lowlevel.c +++ b/lib/fuse_lowlevel.c @@ -1963,6 +1963,8 @@ void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) se->conn.capable |= FUSE_CAP_POSIX_ACL; if (arg->flags & FUSE_HANDLE_KILLPRIV) se->conn.capable |= FUSE_CAP_HANDLE_KILLPRIV; + if (arg->flags & FUSE_CACHE_SYMLINKS) + se->conn.capable |= FUSE_CAP_CACHE_SYMLINKS; if (arg->flags & FUSE_NO_OPENDIR_SUPPORT) se->conn.capable |= FUSE_CAP_NO_OPENDIR_SUPPORT; if (arg->flags & FUSE_EXPLICIT_INVAL_DATA) @@ -2087,6 +2089,8 @@ void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) outarg.flags |= FUSE_WRITEBACK_CACHE; if (se->conn.want & FUSE_CAP_POSIX_ACL) outarg.flags |= FUSE_POSIX_ACL; + if (se->conn.want & FUSE_CAP_CACHE_SYMLINKS) + outarg.flags |= FUSE_CACHE_SYMLINKS; if (se->conn.want & FUSE_CAP_EXPLICIT_INVAL_DATA) outarg.flags |= FUSE_EXPLICIT_INVAL_DATA; outarg.max_readahead = se->conn.max_readahead; -- cgit v1.2.3