diff options
Diffstat (limited to 'example/passthrough_ll.c')
| -rw-r--r-- | example/passthrough_ll.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/example/passthrough_ll.c b/example/passthrough_ll.c index afac6ea..46cc8e0 100644 --- a/example/passthrough_ll.c +++ b/example/passthrough_ll.c @@ -775,6 +775,9 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name, else if (lo->cache == CACHE_ALWAYS) fi->keep_cache = 1; + /* parallel_direct_writes feature depends on direct_io features. + To make parallel_direct_writes valid, need set fi->direct_io + in current function. */ fi->parallel_direct_writes = 1; err = lo_do_lookup(req, parent, name, &e); @@ -834,6 +837,15 @@ static void lo_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) else if (lo->cache == CACHE_ALWAYS) fi->keep_cache = 1; + /* Enable direct_io when open has flags O_DIRECT to enjoy the feature + parallel_direct_writes (i.e., to get a shared lock, not exclusive lock, + for writes to the same file in the kernel). */ + if (fi->flags & O_DIRECT) + fi->direct_io = 1; + + /* parallel_direct_writes feature depends on direct_io features. + To make parallel_direct_writes valid, need set fi->direct_io + in current function. */ fi->parallel_direct_writes = 1; fuse_reply_open(req, fi); |