This patch provides a common decoder for block status that may be retried
so various entities wishing to consult this do not have to duplicate
this decision.
Signed-off-by: Keith Busch <keith.bu...@intel.com>
---
include/linux/blk_types.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index a1e628e032da..b6a8723b493c 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -39,6 +39,22 @@ typedef u8 __bitwise blk_status_t;
#define BLK_STS_AGAIN ((__force blk_status_t)12)
+static inline bool blk_retryable(blk_status_t error)
+{
+ switch (error) {
+ case BLK_STS_NOTSUPP:
+ case BLK_STS_NOSPC:
+ case BLK_STS_TARGET:
+ case BLK_STS_NEXUS:
+ case BLK_STS_MEDIUM:
+ case BLK_STS_PROTECTION:
+ return false;
+ }
+
+ /* Anything else could be a path failure, so should be retried */
+ return true;
+}
+
struct blk_issue_stat {
u64 stat;
};
--
2.13.6
--
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