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authorMiklos Szeredi <mszeredi@suse.cz>2015-07-01 17:25:58 +0300
committerMiklos Szeredi <mszeredi@suse.cz>2015-07-01 17:25:58 +0300
commit825d6d3395e88a616e4c953984d77eeacbad4310 (patch)
tree1a8644c118994d7d7a743665cb657fd21a450443 /fs/fuse/fuse_i.h
parent0d8e84b0432beb6d11a1c82deeb9dc1a7bee02c0 (diff)
downloadlinux-825d6d3395e88a616e4c953984d77eeacbad4310.tar.xz
fuse: req use bitops
Finer grained locking will mean there's no single lock to protect modification of bitfileds in fuse_req. So move to using bitops. Can use the non-atomic variants for those which happen while the request definitely has only one reference. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
Diffstat (limited to 'fs/fuse/fuse_i.h')
-rw-r--r--fs/fuse/fuse_i.h49
1 files changed, 23 insertions, 26 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 7354dc142a50..4503e995c7b2 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -267,6 +267,27 @@ struct fuse_io_priv {
};
/**
+ * Request flags
+ *
+ * FR_ISREPLY: set if the request has reply
+ * FR_FORCE: force sending of the request even if interrupted
+ * FR_BACKGROUND: request is sent in the background
+ * FR_WAITING: request is counted as "waiting"
+ * FR_ABORTED: the request was aborted
+ * FR_INTERRUPTED: the request has been interrupted
+ * FR_LOCKED: data is being copied to/from the request
+ */
+enum fuse_req_flag {
+ FR_ISREPLY,
+ FR_FORCE,
+ FR_BACKGROUND,
+ FR_WAITING,
+ FR_ABORTED,
+ FR_INTERRUPTED,
+ FR_LOCKED,
+};
+
+/**
* A request to the client
*/
struct fuse_req {
@@ -283,32 +304,8 @@ struct fuse_req {
/** Unique ID for the interrupt request */
u64 intr_unique;
- /*
- * The following bitfields are either set once before the
- * request is queued or setting/clearing them is protected by
- * fuse_conn->lock
- */
-
- /** True if the request has reply */
- unsigned isreply:1;
-
- /** Force sending of the request even if interrupted */
- unsigned force:1;
-
- /** The request was aborted */
- unsigned aborted:1;
-
- /** Request is sent in the background */
- unsigned background:1;
-
- /** The request has been interrupted */
- unsigned interrupted:1;
-
- /** Data is being copied to/from the request */
- unsigned locked:1;
-
- /** Request is counted as "waiting" */
- unsigned waiting:1;
+ /* Request flags, updated with test/set/clear_bit() */
+ unsigned long flags;
/** State of the request */
enum fuse_req_state state;