Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

[h-e-n] / include / linux / blkdev.h

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 8eed8b1..b4fe68f 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -87,7 +87,9 @@ enum {
  */
 enum rq_flag_bits {
        __REQ_RW,               /* not set, read. set, write */
-       __REQ_FAILFAST,         /* no low level driver retries */
+       __REQ_FAILFAST_DEV,     /* no driver retries of device errors */
+       __REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
+       __REQ_FAILFAST_DRIVER,  /* no driver retries of driver errors */
        __REQ_DISCARD,          /* request to discard sectors */
        __REQ_SORTED,           /* elevator knows about this request */
        __REQ_SOFTBARRIER,      /* may not be passed by ioscheduler */
@@ -111,8 +113,10 @@ enum rq_flag_bits {
 };
 
 #define REQ_RW         (1 << __REQ_RW)
+#define REQ_FAILFAST_DEV       (1 << __REQ_FAILFAST_DEV)
+#define REQ_FAILFAST_TRANSPORT (1 << __REQ_FAILFAST_TRANSPORT)
+#define REQ_FAILFAST_DRIVER    (1 << __REQ_FAILFAST_DRIVER)
 #define REQ_DISCARD    (1 << __REQ_DISCARD)
-#define REQ_FAILFAST   (1 << __REQ_FAILFAST)
 #define REQ_SORTED     (1 << __REQ_SORTED)
 #define REQ_SOFTBARRIER        (1 << __REQ_SOFTBARRIER)
 #define REQ_HARDBARRIER        (1 << __REQ_HARDBARRIER)
@@ -560,7 +564,12 @@ enum {
 #define blk_special_request(rq)        ((rq)->cmd_type == REQ_TYPE_SPECIAL)
 #define blk_sense_request(rq)  ((rq)->cmd_type == REQ_TYPE_SENSE)
 
-#define blk_noretry_request(rq)        ((rq)->cmd_flags & REQ_FAILFAST)
+#define blk_failfast_dev(rq)   ((rq)->cmd_flags & REQ_FAILFAST_DEV)
+#define blk_failfast_transport(rq) ((rq)->cmd_flags & REQ_FAILFAST_TRANSPORT)
+#define blk_failfast_driver(rq)        ((rq)->cmd_flags & REQ_FAILFAST_DRIVER)
+#define blk_noretry_request(rq)        (blk_failfast_dev(rq) ||        \
+                                blk_failfast_transport(rq) ||  \
+                                blk_failfast_driver(rq))
 #define blk_rq_started(rq)     ((rq)->cmd_flags & REQ_STARTED)
 
 #define blk_account_rq(rq)     (blk_rq_started(rq) && (blk_fs_request(rq) || blk_discard_rq(rq)))