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| author | Miklos Szeredi <mszeredi@suse.cz> | 2013-05-01 14:37:21 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2013-05-01 14:37:21 +0200 |
| commit | 60b9df7a54804a965850db00beec4d3a2c002536 (patch) | |
| tree | ce3519c0708d6dd4113707c36a4ebdc6501542ef /fs/fuse/inode.c | |
| parent | efb9fa9e911b23c7ea5330215bda778a7c69dba8 (diff) | |
| download | lwn-60b9df7a54804a965850db00beec4d3a2c002536.tar.gz lwn-60b9df7a54804a965850db00beec4d3a2c002536.zip | |
fuse: add flag to turn on async direct IO
Without async DIO write requests to a single file were always serialized.
With async DIO that's no longer the case.
So don't turn on async DIO by default for fear of breaking backward
compatibility.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 17ec1f70524d..6201f81e4d3a 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -871,6 +871,8 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) fc->do_readdirplus = 1; if (arg->flags & FUSE_READDIRPLUS_AUTO) fc->readdirplus_auto = 1; + if (arg->flags & FUSE_ASYNC_DIO) + fc->async_dio = 1; } else { ra_pages = fc->max_read / PAGE_CACHE_SIZE; fc->no_lock = 1; @@ -898,7 +900,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK | FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ | FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA | - FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO; + FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO; req->in.h.opcode = FUSE_INIT; req->in.numargs = 1; req->in.args[0].size = sizeof(*arg); |