mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-06 08:46:46 +00:00
block: Provide blk_status_t decoding for path errors
This patch provides a common decoder for block status path related errors that may be retried so various entities wishing to consult this do not have to duplicate this decision. Acked-by: Mike Snitzer <snitzer@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
908e45643d
commit
9111e5686c
1 changed files with 28 additions and 0 deletions
|
@ -39,6 +39,34 @@ typedef u8 __bitwise blk_status_t;
|
||||||
|
|
||||||
#define BLK_STS_AGAIN ((__force blk_status_t)12)
|
#define BLK_STS_AGAIN ((__force blk_status_t)12)
|
||||||
|
|
||||||
|
/**
|
||||||
|
* blk_path_error - returns true if error may be path related
|
||||||
|
* @error: status the request was completed with
|
||||||
|
*
|
||||||
|
* Description:
|
||||||
|
* This classifies block error status into non-retryable errors and ones
|
||||||
|
* that may be successful if retried on a failover path.
|
||||||
|
*
|
||||||
|
* Return:
|
||||||
|
* %false - retrying failover path will not help
|
||||||
|
* %true - may succeed if retried
|
||||||
|
*/
|
||||||
|
static inline bool blk_path_error(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 {
|
struct blk_issue_stat {
|
||||||
u64 stat;
|
u64 stat;
|
||||||
};
|
};
|
||||||
|
|
Loading…
Reference in a new issue