From mboxrd@z Thu Jan 1 00:00:00 1970 From: keith.busch@intel.com (Keith Busch) Date: Thu, 4 Jan 2018 15:46:21 -0700 Subject: [PATCH 3/5] block: Provide blk_status_t decoding for retryable errors In-Reply-To: <20180104224623.8944-1-keith.busch@intel.com> References: <20180104224623.8944-1-keith.busch@intel.com> Message-ID: <20180104224623.8944-4-keith.busch@intel.com> 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 --- 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