diff options
| author | Song Liu <song@kernel.org> | 2022-02-03 20:28:25 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-02-04 05:10:00 +0100 |
| commit | 2651bf680bc2ad9a078b7222b0873145ab4ece07 (patch) | |
| tree | bf28c532359259735917a29c047f7b00c80c9097 | |
| parent | fs/ntfs3: remove unnecessary NULL check (diff) | |
| download | linux-2651bf680bc2ad9a078b7222b0873145ab4ece07.tar.xz linux-2651bf680bc2ad9a078b7222b0873145ab4ece07.zip | |
block: introduce BLK_STS_OFFLINE
Currently, drivers reports BLK_STS_IOERR for devices that are not full
online or being removed. This behavior could cause confusion for users,
as they are not really I/O errors from the device.
Solve this issue with a new state BLK_STS_OFFLINE, which reports "device
offline error" in dmesg instead of "I/O error".
EIO is intentionally kept to not change user visible return value.
Signed-off-by: Song Liu <song@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220203192827.1370270-2-song@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-core.c | 1 | ||||
| -rw-r--r-- | include/linux/blk_types.h | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 61f6a0dc4511..24035dd2eef1 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -164,6 +164,7 @@ static const struct { [BLK_STS_RESOURCE] = { -ENOMEM, "kernel resource" }, [BLK_STS_DEV_RESOURCE] = { -EBUSY, "device resource" }, [BLK_STS_AGAIN] = { -EAGAIN, "nonblocking retry" }, + [BLK_STS_OFFLINE] = { -EIO, "device offline" }, /* device mapper special case, should not leak out: */ [BLK_STS_DM_REQUEUE] = { -EREMCHG, "dm internal retry" }, diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index fe065c394fff..5561e58d158a 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -153,6 +153,13 @@ typedef u8 __bitwise blk_status_t; */ #define BLK_STS_ZONE_ACTIVE_RESOURCE ((__force blk_status_t)16) +/* + * BLK_STS_OFFLINE is returned from the driver when the target device is offline + * or is being taken offline. This could help differentiate the case where a + * device is intentionally being shut down from a real I/O error. + */ +#define BLK_STS_OFFLINE ((__force blk_status_t)17) + /** * blk_path_error - returns true if error may be path related * @error: status the request was completed with |