Change blk_status_to_str() to be consistent with blk_status_to_errno()
and return "I/O" for undefined status codes.

With that, the fallback case in the blk_errors array can be removed with
no change in behavior.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
 block/blk-core.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 474700ffaa1c..a20042f15790 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -161,9 +161,6 @@ static const struct {
 	[BLK_STS_DURATION_LIMIT]	= { -ETIME, "duration limit exceeded" },
 
 	[BLK_STS_INVAL]		= { -EINVAL,	"invalid" },
-
-	/* everything else not covered above: */
-	[BLK_STS_IOERR]		= { -EIO,	"I/O" },
 };
 
 blk_status_t errno_to_blk_status(int errno)
@@ -194,7 +191,7 @@ const char *blk_status_to_str(blk_status_t status)
 	int idx = (__force int)status;
 
 	if (WARN_ON_ONCE(idx >= ARRAY_SIZE(blk_errors)))
-		return "<null>";
+		return "I/O";
 	return blk_errors[idx].name;
 }
 EXPORT_SYMBOL_GPL(blk_status_to_str);
-- 
2.52.0

On 04/03/2026 19:04, Andreas Gruenbacher wrote:
> Change blk_status_to_str() to be consistent with blk_status_to_errno()
> and return "I/O" for undefined status codes.
> 
> With that, the fallback case in the blk_errors array can be removed with
> no change in behavior.
> 
> Signed-off-by: Andreas Gruenbacher<agruenba@redhat.com>

Reviewed-by: John Garry <john.g.garry@oracle.com>

On Wed, Mar 04, 2026 at 08:04:07PM +0100, Andreas Gruenbacher wrote:
> Change blk_status_to_str() to be consistent with blk_status_to_errno()
> and return "I/O" for undefined status codes.
> 
> With that, the fallback case in the blk_errors array can be removed with
> no change in behavior.

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

While you're at it: blk_status_to_str is exported, but as no modular
users, can you also drop the export?