From 322cbb50de711814c42fb088f6d31901502c711a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 24 Jan 2022 10:39:13 +0100 Subject: block: remove genhd.h There is no good reason to keep genhd.h separate from the main blkdev.h header that includes it. So fold the contents of genhd.h into blkdev.h and remove genhd.h entirely. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de Signed-off-by: Jens Axboe --- kernel/power/hibernate.c | 1 - kernel/power/swap.c | 1 - 2 files changed, 2 deletions(-) (limited to 'kernel') diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index e6af502c2fd7..a94044197c4a 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -28,7 +28,6 @@ #include #include #include -#include #include #include #include diff --git a/kernel/power/swap.c b/kernel/power/swap.c index ad10359030a4..f1bd03129575 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -16,7 +16,6 @@ #include #include #include -#include #include #include #include -- cgit v1.2.3 From 07888c665b405b1cd3577ddebfeb74f4717a84c4 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 24 Jan 2022 10:11:05 +0100 Subject: block: pass a block_device and opf to bio_alloc Pass the block_device and operation that we plan to use this bio for to bio_alloc to optimize the assignment. NULL/0 can be passed, both for the passthrough case on a raw request_queue and to temporarily avoid refactoring some nasty code. Also move the gfp_mask argument after the nr_vecs argument for a much more logical calling convention matching what most of the kernel does. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20220124091107.642561-18-hch@lst.de Signed-off-by: Jens Axboe --- kernel/power/swap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'kernel') diff --git a/kernel/power/swap.c b/kernel/power/swap.c index f1bd03129575..6c4f983cbacc 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -276,10 +276,9 @@ static int hib_submit_io(int op, int op_flags, pgoff_t page_off, void *addr, struct bio *bio; int error = 0; - bio = bio_alloc(GFP_NOIO | __GFP_HIGH, 1); + bio = bio_alloc(hib_resume_bdev, 1, op | op_flags, + GFP_NOIO | __GFP_HIGH); bio->bi_iter.bi_sector = page_off * (PAGE_SIZE >> 9); - bio_set_dev(bio, hib_resume_bdev); - bio_set_op_attrs(bio, op, op_flags); if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { pr_err("Adding page to bio failed at %llu\n", -- cgit v1.2.3 From b1f866b013e6e5583f2f0bf4a61d13eddb9a1799 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 27 Jan 2022 08:05:48 +0100 Subject: block: remove blk_needs_flush_plug blk_needs_flush_plug fails to account for the cb_list, which needs flushing as well. Remove it and just check if there is a plug instead of poking into the internals of the plug structure. Signed-off-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220127070549.1377856-1-hch@lst.de Signed-off-by: Jens Axboe --- kernel/exit.c | 2 +- kernel/sched/core.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel') diff --git a/kernel/exit.c b/kernel/exit.c index b00a25bb4ab9..11fc6c9df9f2 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -735,7 +735,7 @@ void __noreturn do_exit(long code) struct task_struct *tsk = current; int group_dead; - WARN_ON(blk_needs_flush_plug(tsk)); + WARN_ON(tsk->plug); /* * If do_dead is called because this processes oopsed, it's possible diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 848eaa0efe0e..3487bb92d1f2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6344,7 +6344,7 @@ static inline void sched_submit_work(struct task_struct *tsk) * If we are going to sleep and we have plugged IO queued, * make sure to submit it to avoid deadlocks. */ - if (blk_needs_flush_plug(tsk)) + if (tsk->plug) blk_flush_plug(tsk->plug, true); } -- cgit v1.2.3 From aa8dcccaf32bfdc09f2aff089d5d60c37da5b7b5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 27 Jan 2022 08:05:49 +0100 Subject: block: check that there is a plug in blk_flush_plug Rename blk_flush_plug to __blk_flush_plug and add a wrapper that includes the NULL check instead of open coding that check everywhere. Signed-off-by: Christoph Hellwig Reviewed-by: Chaitanya Kulkarni Link: https://lore.kernel.org/r/20220127070549.1377856-2-hch@lst.de Signed-off-by: Jens Axboe --- kernel/sched/core.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'kernel') diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 3487bb92d1f2..46152982e400 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6344,8 +6344,7 @@ static inline void sched_submit_work(struct task_struct *tsk) * If we are going to sleep and we have plugged IO queued, * make sure to submit it to avoid deadlocks. */ - if (tsk->plug) - blk_flush_plug(tsk->plug, true); + blk_flush_plug(tsk->plug, true); } static void sched_update_worker(struct task_struct *tsk) @@ -8371,9 +8370,7 @@ int io_schedule_prepare(void) int old_iowait = current->in_iowait; current->in_iowait = 1; - if (current->plug) - blk_flush_plug(current->plug, true); - + blk_flush_plug(current->plug, true); return old_iowait; } -- cgit v1.2.3