diff options
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 7ed1d3c53b8a..46cf933aa3bf 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -94,6 +94,11 @@ struct fuse_out { /** Header returned from userspace */ struct fuse_out_header h; + /* + * The following bitfields are not changed during the request + * processing + */ + /** Last argument is variable length (can be shorter than arg->size) */ unsigned argvar:1; @@ -136,6 +141,12 @@ struct fuse_req { /** refcount */ atomic_t count; + /* + * The following bitfields are either set once before the + * request is queued or setting/clearing them is protected by + * fuse_lock + */ + /** True if the request has reply */ unsigned isreply:1; @@ -250,15 +261,22 @@ struct fuse_conn { u64 reqctr; /** Mount is active */ - unsigned mounted : 1; + unsigned mounted; /** Connection established, cleared on umount, connection abort and device release */ - unsigned connected : 1; + unsigned connected; - /** Connection failed (version mismatch) */ + /** Connection failed (version mismatch). Cannot race with + setting other bitfields since it is only set once in INIT + reply, before any other request, and never cleared */ unsigned conn_error : 1; + /* + * The following bitfields are only for optimization purposes + * and hence races in setting them will not cause malfunction + */ + /** Is fsync not implemented by fs? */ unsigned no_fsync : 1; |