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Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, John Garry , Hannes Reinecke , Christoph Hellwig , Damien Le Moal , Bart Van Assche , Jens Axboe , Ming Lei Subject: [PATCH v4 2/6] block: Introduce __blk_mq_tagset_iter() Date: Tue, 16 Dec 2025 14:30:46 -0800 Message-ID: <20251216223052.350366-3-bvanassche@acm.org> X-Mailer: git-send-email 2.52.0.305.g3fc767764a-goog In-Reply-To: <20251216223052.350366-1-bvanassche@acm.org> References: <20251216223052.350366-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Prepare for introducing a second caller of __blk_mq_tagset_iter(). No functionality has been changed. Cc: Jens Axboe Cc: Christoph Hellwig Cc: Ming Lei Cc: John Garry Cc: Hannes Reinecke Signed-off-by: Bart Van Assche --- block/blk-mq-tag.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index e8e1fd398d4b..783addc52e09 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -419,6 +419,24 @@ void blk_mq_all_tag_iter(struct blk_mq_tags *tags, b= lk_mq_rq_iter_fn *fn, __blk_mq_all_tag_iter(tags, fn, priv, BT_TAG_ITER_STATIC_RQS); } =20 +static void __blk_mq_tagset_iter(struct blk_mq_tag_set *tagset, + blk_mq_rq_iter_fn *fn, void *priv, unsigned long flags) +{ + int i, nr_tags, srcu_idx; + + srcu_idx =3D srcu_read_lock(&tagset->tags_srcu); + + nr_tags =3D blk_mq_is_shared_tags(tagset->flags) ? 1 : + tagset->nr_hw_queues; + + for (i =3D 0; i < nr_tags; i++) { + if (tagset->tags && tagset->tags[i]) + __blk_mq_all_tag_iter(tagset->tags[i], fn, priv, + flags); + } + srcu_read_unlock(&tagset->tags_srcu, srcu_idx); +} + /** * blk_mq_tagset_busy_iter - iterate over all started requests in a tag = set * @tagset: Tag set to iterate over. @@ -434,19 +452,7 @@ void blk_mq_all_tag_iter(struct blk_mq_tags *tags, b= lk_mq_rq_iter_fn *fn, void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset, blk_mq_rq_iter_fn *fn, void *priv) { - unsigned int flags =3D tagset->flags; - int i, nr_tags, srcu_idx; - - srcu_idx =3D srcu_read_lock(&tagset->tags_srcu); - - nr_tags =3D blk_mq_is_shared_tags(flags) ? 1 : tagset->nr_hw_queues; - - for (i =3D 0; i < nr_tags; i++) { - if (tagset->tags && tagset->tags[i]) - __blk_mq_all_tag_iter(tagset->tags[i], fn, priv, - BT_TAG_ITER_STARTED); - } - srcu_read_unlock(&tagset->tags_srcu, srcu_idx); + __blk_mq_tagset_iter(tagset, fn, priv, BT_TAG_ITER_STARTED); } EXPORT_SYMBOL(blk_mq_tagset_busy_iter); =20