diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-12-03 10:39:07 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-12-03 08:51:25 -0700 |
| commit | ae58954d8734c44298f55ed71e683ea944994fab (patch) | |
| tree | ff1253e9b9cbe3550d4930f8a6eeaf6f502cc07d /block/blk-zoned.c | |
| parent | e94f5819448c5b75829662eaa9c25c17868846cf (diff) | |
| download | lwn-ae58954d8734c44298f55ed71e683ea944994fab.tar.gz lwn-ae58954d8734c44298f55ed71e683ea944994fab.zip | |
block: don't handle bio based drivers in blk_revalidate_disk_zones
bio based drivers only need to update q->nr_zones. Do that manually
instead of overloading blk_revalidate_disk_zones to keep that function
simpler for the next round of changes that will rely even more on the
request based functionality.
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-zoned.c')
| -rw-r--r-- | block/blk-zoned.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 0131f9e14bd1..51d427659ce7 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -419,8 +419,9 @@ static int blk_revalidate_zone_cb(struct blk_zone *zone, unsigned int idx, * * Helper function for low-level device drivers to (re) allocate and initialize * a disk request queue zone bitmaps. This functions should normally be called - * within the disk ->revalidate method. For BIO based queues, no zone bitmap - * is allocated. + * within the disk ->revalidate method for blk-mq based drivers. For BIO based + * drivers only q->nr_zones needs to be updated so that the sysfs exposed value + * is correct. */ int blk_revalidate_disk_zones(struct gendisk *disk) { @@ -433,15 +434,8 @@ int blk_revalidate_disk_zones(struct gendisk *disk) if (WARN_ON_ONCE(!blk_queue_is_zoned(q))) return -EIO; - - /* - * BIO based queues do not use a scheduler so only q->nr_zones - * needs to be updated so that the sysfs exposed value is correct. - */ - if (!queue_is_mq(q)) { - q->nr_zones = args.nr_zones; - return 0; - } + if (WARN_ON_ONCE(!queue_is_mq(q))) + return -EIO; /* * Ensure that all memory allocations in this context are done as |