diff options
| author | Nilay Shroff <nilay@linux.ibm.com> | 2025-11-13 14:28:18 +0530 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-11-13 09:27:49 -0700 |
| commit | 232143b605387b372dee0ec7830f93b93df5f67d (patch) | |
| tree | 0a68492c431dc740e995e01ab33a9678b99c77ee /block/blk.h | |
| parent | c3f42a6de708db6891879547b29cd0d84ad83c92 (diff) | |
block: unify elevator tags and type xarrays into struct elv_change_ctx
Currently, the nr_hw_queues update path manages two disjoint xarrays —
one for elevator tags and another for elevator type — both used during
elevator switching. Maintaining these two parallel structures for the
same purpose adds unnecessary complexity and potential for mismatched
state.
This patch unifies both xarrays into a single structure, struct
elv_change_ctx, which holds all per-queue elevator change context. A
single xarray, named elv_tbl, now maps each queue (q->id) in a tagset
to its corresponding elv_change_ctx entry, encapsulating the elevator
tags, type and name references.
This unification simplifies the code, improves maintainability, and
clarifies ownership of per-queue elevator state.
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Yu Kuai <yukuai@fnnas.com>
Signed-off-by: Nilay Shroff <nilay@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk.h')
| -rw-r--r-- | block/blk.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/block/blk.h b/block/blk.h index 4d809588b771..e4c433f62dfc 100644 --- a/block/blk.h +++ b/block/blk.h @@ -11,8 +11,7 @@ #include <xen/xen.h> #include "blk-crypto-internal.h" -struct elevator_type; -struct elevator_tags; +struct elv_change_ctx; /* * Default upper limit for the software max_sectors limit used for regular I/Os. @@ -333,8 +332,8 @@ bool blk_bio_list_merge(struct request_queue *q, struct list_head *list, bool blk_insert_flush(struct request *rq); -void elv_update_nr_hw_queues(struct request_queue *q, struct elevator_type *e, - struct elevator_tags *t); +void elv_update_nr_hw_queues(struct request_queue *q, + struct elv_change_ctx *ctx); void elevator_set_default(struct request_queue *q); void elevator_set_none(struct request_queue *q); |