From: Ming Lei <ming.lei@redhat.com> To: Jens Axboe <axboe@kernel.dk> Cc: linux-block@vger.kernel.org, Jeffle Xu <jefflexu@linux.alibaba.com>, Mike Snitzer <snitzer@redhat.com>, dm-devel@redhat.com, Hannes Reinecke <hare@suse.de>, Ming Lei <ming.lei@redhat.com> Subject: [PATCH V5 07/12] block: prepare for supporting bio_list via other link Date: Thu, 1 Apr 2021 10:19:22 +0800 [thread overview] Message-ID: <20210401021927.343727-8-ming.lei@redhat.com> (raw) In-Reply-To: <20210401021927.343727-1-ming.lei@redhat.com> So far bio list helpers always use .bi_next to traverse the list, we will support to link bios by other bio field. Prepare for such support by adding a macro so that users can define another helpers for linking bios by other bio field. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Ming Lei <ming.lei@redhat.com> --- include/linux/bio.h | 132 +++++++++++++++++++++++--------------------- 1 file changed, 68 insertions(+), 64 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index d0246c92a6e8..619edd26a6c0 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -608,75 +608,11 @@ static inline unsigned bio_list_size(const struct bio_list *bl) return sz; } -static inline void bio_list_add(struct bio_list *bl, struct bio *bio) -{ - bio->bi_next = NULL; - - if (bl->tail) - bl->tail->bi_next = bio; - else - bl->head = bio; - - bl->tail = bio; -} - -static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio) -{ - bio->bi_next = bl->head; - - bl->head = bio; - - if (!bl->tail) - bl->tail = bio; -} - -static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2) -{ - if (!bl2->head) - return; - - if (bl->tail) - bl->tail->bi_next = bl2->head; - else - bl->head = bl2->head; - - bl->tail = bl2->tail; -} - -static inline void bio_list_merge_head(struct bio_list *bl, - struct bio_list *bl2) -{ - if (!bl2->head) - return; - - if (bl->head) - bl2->tail->bi_next = bl->head; - else - bl->tail = bl2->tail; - - bl->head = bl2->head; -} - static inline struct bio *bio_list_peek(struct bio_list *bl) { return bl->head; } -static inline struct bio *bio_list_pop(struct bio_list *bl) -{ - struct bio *bio = bl->head; - - if (bio) { - bl->head = bl->head->bi_next; - if (!bl->head) - bl->tail = NULL; - - bio->bi_next = NULL; - } - - return bio; -} - static inline struct bio *bio_list_get(struct bio_list *bl) { struct bio *bio = bl->head; @@ -686,6 +622,74 @@ static inline struct bio *bio_list_get(struct bio_list *bl) return bio; } +#define BIO_LIST_HELPERS(_pre, link) \ + \ +static inline void _pre##_add(struct bio_list *bl, struct bio *bio) \ +{ \ + bio->bi_##link = NULL; \ + \ + if (bl->tail) \ + bl->tail->bi_##link = bio; \ + else \ + bl->head = bio; \ + \ + bl->tail = bio; \ +} \ + \ +static inline void _pre##_add_head(struct bio_list *bl, struct bio *bio) \ +{ \ + bio->bi_##link = bl->head; \ + \ + bl->head = bio; \ + \ + if (!bl->tail) \ + bl->tail = bio; \ +} \ + \ +static inline void _pre##_merge(struct bio_list *bl, struct bio_list *bl2) \ +{ \ + if (!bl2->head) \ + return; \ + \ + if (bl->tail) \ + bl->tail->bi_##link = bl2->head; \ + else \ + bl->head = bl2->head; \ + \ + bl->tail = bl2->tail; \ +} \ + \ +static inline void _pre##_merge_head(struct bio_list *bl, \ + struct bio_list *bl2) \ +{ \ + if (!bl2->head) \ + return; \ + \ + if (bl->head) \ + bl2->tail->bi_##link = bl->head; \ + else \ + bl->tail = bl2->tail; \ + \ + bl->head = bl2->head; \ +} \ + \ +static inline struct bio *_pre##_pop(struct bio_list *bl) \ +{ \ + struct bio *bio = bl->head; \ + \ + if (bio) { \ + bl->head = bl->head->bi_##link; \ + if (!bl->head) \ + bl->tail = NULL; \ + \ + bio->bi_##link = NULL; \ + } \ + \ + return bio; \ +} \ + +BIO_LIST_HELPERS(bio_list, next); + /* * Increment chain count for the bio. Make sure the CHAIN flag update * is visible before the raised count. -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Ming Lei <ming.lei@redhat.com> To: Jens Axboe <axboe@kernel.dk> Cc: Mike Snitzer <snitzer@redhat.com>, Ming Lei <ming.lei@redhat.com>, linux-block@vger.kernel.org, dm-devel@redhat.com, Jeffle Xu <jefflexu@linux.alibaba.com> Subject: [dm-devel] [PATCH V5 07/12] block: prepare for supporting bio_list via other link Date: Thu, 1 Apr 2021 10:19:22 +0800 [thread overview] Message-ID: <20210401021927.343727-8-ming.lei@redhat.com> (raw) In-Reply-To: <20210401021927.343727-1-ming.lei@redhat.com> So far bio list helpers always use .bi_next to traverse the list, we will support to link bios by other bio field. Prepare for such support by adding a macro so that users can define another helpers for linking bios by other bio field. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Ming Lei <ming.lei@redhat.com> --- include/linux/bio.h | 132 +++++++++++++++++++++++--------------------- 1 file changed, 68 insertions(+), 64 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index d0246c92a6e8..619edd26a6c0 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -608,75 +608,11 @@ static inline unsigned bio_list_size(const struct bio_list *bl) return sz; } -static inline void bio_list_add(struct bio_list *bl, struct bio *bio) -{ - bio->bi_next = NULL; - - if (bl->tail) - bl->tail->bi_next = bio; - else - bl->head = bio; - - bl->tail = bio; -} - -static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio) -{ - bio->bi_next = bl->head; - - bl->head = bio; - - if (!bl->tail) - bl->tail = bio; -} - -static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2) -{ - if (!bl2->head) - return; - - if (bl->tail) - bl->tail->bi_next = bl2->head; - else - bl->head = bl2->head; - - bl->tail = bl2->tail; -} - -static inline void bio_list_merge_head(struct bio_list *bl, - struct bio_list *bl2) -{ - if (!bl2->head) - return; - - if (bl->head) - bl2->tail->bi_next = bl->head; - else - bl->tail = bl2->tail; - - bl->head = bl2->head; -} - static inline struct bio *bio_list_peek(struct bio_list *bl) { return bl->head; } -static inline struct bio *bio_list_pop(struct bio_list *bl) -{ - struct bio *bio = bl->head; - - if (bio) { - bl->head = bl->head->bi_next; - if (!bl->head) - bl->tail = NULL; - - bio->bi_next = NULL; - } - - return bio; -} - static inline struct bio *bio_list_get(struct bio_list *bl) { struct bio *bio = bl->head; @@ -686,6 +622,74 @@ static inline struct bio *bio_list_get(struct bio_list *bl) return bio; } +#define BIO_LIST_HELPERS(_pre, link) \ + \ +static inline void _pre##_add(struct bio_list *bl, struct bio *bio) \ +{ \ + bio->bi_##link = NULL; \ + \ + if (bl->tail) \ + bl->tail->bi_##link = bio; \ + else \ + bl->head = bio; \ + \ + bl->tail = bio; \ +} \ + \ +static inline void _pre##_add_head(struct bio_list *bl, struct bio *bio) \ +{ \ + bio->bi_##link = bl->head; \ + \ + bl->head = bio; \ + \ + if (!bl->tail) \ + bl->tail = bio; \ +} \ + \ +static inline void _pre##_merge(struct bio_list *bl, struct bio_list *bl2) \ +{ \ + if (!bl2->head) \ + return; \ + \ + if (bl->tail) \ + bl->tail->bi_##link = bl2->head; \ + else \ + bl->head = bl2->head; \ + \ + bl->tail = bl2->tail; \ +} \ + \ +static inline void _pre##_merge_head(struct bio_list *bl, \ + struct bio_list *bl2) \ +{ \ + if (!bl2->head) \ + return; \ + \ + if (bl->head) \ + bl2->tail->bi_##link = bl->head; \ + else \ + bl->tail = bl2->tail; \ + \ + bl->head = bl2->head; \ +} \ + \ +static inline struct bio *_pre##_pop(struct bio_list *bl) \ +{ \ + struct bio *bio = bl->head; \ + \ + if (bio) { \ + bl->head = bl->head->bi_##link; \ + if (!bl->head) \ + bl->tail = NULL; \ + \ + bio->bi_##link = NULL; \ + } \ + \ + return bio; \ +} \ + +BIO_LIST_HELPERS(bio_list, next); + /* * Increment chain count for the bio. Make sure the CHAIN flag update * is visible before the raised count. -- 2.29.2 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2021-04-01 2:22 UTC|newest] Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-01 2:19 [PATCH V5 00/12] block: support bio based io polling Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 01/12] block: add helper of blk_queue_poll Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 02/12] block: add one helper to free io_context Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 03/12] block: create io poll context for submission and poll task Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 10:19 ` Christoph Hellwig 2021-04-12 10:19 ` [dm-devel] " Christoph Hellwig 2021-04-01 2:19 ` [PATCH V5 04/12] block: add req flag of REQ_POLL_CTX Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 05/12] block: add new field into 'struct bvec_iter' Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 9:26 ` Christoph Hellwig 2021-04-12 9:26 ` [dm-devel] " Christoph Hellwig 2021-04-13 9:36 ` Ming Lei 2021-04-13 9:36 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 06/12] block/mq: extract one helper function polling hw queue Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 9:29 ` Christoph Hellwig 2021-04-12 9:29 ` [dm-devel] " Christoph Hellwig 2021-04-01 2:19 ` Ming Lei [this message] 2021-04-01 2:19 ` [dm-devel] [PATCH V5 07/12] block: prepare for supporting bio_list via other link Ming Lei 2021-04-12 10:18 ` Christoph Hellwig 2021-04-12 10:18 ` [dm-devel] " Christoph Hellwig 2021-04-12 11:37 ` Ming Lei 2021-04-12 11:37 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 08/12] block: use per-task poll context to implement bio based io polling Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 9:54 ` Christoph Hellwig 2021-04-12 9:54 ` [dm-devel] " Christoph Hellwig 2021-04-12 10:20 ` Ming Lei 2021-04-12 10:20 ` [dm-devel] " Ming Lei 2021-04-12 10:29 ` Christoph Hellwig 2021-04-12 10:29 ` [dm-devel] " Christoph Hellwig 2021-04-12 11:42 ` Ming Lei 2021-04-12 11:42 ` [dm-devel] " Ming Lei 2021-04-12 10:16 ` Christoph Hellwig 2021-04-12 10:16 ` [dm-devel] " Christoph Hellwig 2021-04-12 10:37 ` Ming Lei 2021-04-12 10:37 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 09/12] blk-mq: limit hw queues to be polled in each blk_poll() Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-01 2:19 ` [PATCH V5 10/12] block: add queue_to_disk() to get gendisk from request_queue Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 12:52 ` Jens Axboe 2021-04-12 12:52 ` [dm-devel] " Jens Axboe 2021-04-01 2:19 ` [PATCH V5 11/12] block: add poll_capable method to support bio-based IO polling Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-12 9:38 ` Christoph Hellwig 2021-04-12 9:38 ` [dm-devel] " Christoph Hellwig 2021-04-14 8:38 ` JeffleXu 2021-04-14 8:38 ` [dm-devel] " JeffleXu 2021-04-14 11:24 ` Ming Lei 2021-04-14 11:24 ` [dm-devel] " Ming Lei 2021-04-15 1:34 ` JeffleXu 2021-04-15 1:34 ` [dm-devel] " JeffleXu 2021-04-15 7:43 ` Ming Lei 2021-04-15 7:43 ` [dm-devel] " Ming Lei 2021-04-15 9:21 ` JeffleXu 2021-04-15 9:21 ` [dm-devel] " JeffleXu 2021-04-15 10:06 ` Ming Lei 2021-04-15 10:06 ` [dm-devel] " Ming Lei 2021-04-15 11:21 ` JeffleXu 2021-04-15 11:21 ` [dm-devel] " JeffleXu 2021-04-15 13:08 ` Ming Lei 2021-04-15 13:08 ` [dm-devel] " Ming Lei 2021-04-16 8:00 ` [PATCH] block: introduce QUEUE_FLAG_POLL_CAP flag Jeffle Xu 2021-04-16 8:00 ` [dm-devel] " Jeffle Xu 2021-04-16 8:42 ` JeffleXu 2021-04-16 8:42 ` [dm-devel] " JeffleXu 2021-04-16 9:07 ` Ming Lei 2021-04-16 9:07 ` [dm-devel] " Ming Lei 2021-04-16 10:20 ` JeffleXu 2021-04-16 10:20 ` [dm-devel] " JeffleXu 2021-04-17 14:06 ` JeffleXu 2021-04-17 14:06 ` [dm-devel] " JeffleXu 2021-04-19 2:21 ` Ming Lei 2021-04-19 2:21 ` [dm-devel] " Ming Lei 2021-04-19 5:40 ` JeffleXu 2021-04-19 5:40 ` [dm-devel] " JeffleXu 2021-04-19 13:36 ` Ming Lei 2021-04-19 13:36 ` [dm-devel] " Ming Lei 2021-04-20 7:25 ` JeffleXu 2021-04-20 7:25 ` [dm-devel] " JeffleXu 2021-04-01 2:19 ` [PATCH V5 12/12] dm: support IO polling for bio-based dm device Ming Lei 2021-04-01 2:19 ` [dm-devel] " Ming Lei 2021-04-09 15:39 ` [PATCH V5 00/12] block: support bio based io polling Ming Lei 2021-04-09 15:39 ` [dm-devel] " Ming Lei 2021-04-12 9:46 ` Christoph Hellwig 2021-04-12 9:46 ` [dm-devel] " Christoph Hellwig
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