kernel/linux.git/include/linux/part_stat.h, branch v6.19.11

block: Update a comment of disk statistics

2025-10-02T21:28:42+00:00

>From commit 074a7aca7afa ("block: move stats from disk to part0"), we know that: * {disk|all}_stat_*() are gone. * disk_stat_lock/unlock() are renamed to part_stat_lock/unlock(). Therefore, outdated comments should be updated accordingly. Fixes: 074a7aca7afa ("block: move stats from disk to part0") Signed-off-by: Tang Yizhou Signed-off-by: Jens Axboe

block: export API to get the number of bdev inflight IO

2025-05-10T08:11:49+00:00

- rename part_in_{flight, flight_rw} to bdev_count_{inflight, inflight_rw} - export bdev_count_inflight, to fix a problem in mdraid that foreground IO can be starved by background sync IO in later patches Link: https://lore.kernel.org/linux-raid/20250506124903.2540268-6-yukuai1@huaweicloud.com Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke

percpu: use TYPEOF_UNQUAL() in variable declarations

2025-03-17T05:05:53+00:00

Use TYPEOF_UNQUAL() to declare variables as a corresponding type without named address space qualifier to avoid "`__seg_gs' specified for auto variable `var'" errors. Link: https://lkml.kernel.org/r/20250127160709.80604-4-ubizjak@gmail.com Signed-off-by: Uros Bizjak Acked-by: Nadav Amit Acked-by: Christoph Lameter Cc: Dennis Zhou Cc: Tejun Heo Cc: Andy Lutomirski Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: Kent Overstreet Cc: Arnd Bergmann Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Peter Zijlstra Cc: Will Deacon Cc: Waiman Long Cc: Boqun Feng Cc: Linus Torvalds Cc: Brian Gerst Cc: Denys Vlasenko Signed-off-by: Andrew Morton

Use bdev_is_paritition() instead of open-coding it

2024-05-02T21:48:09+00:00

Reviewed-by: Christoph Hellwig Signed-off-by: Al Viro

block: remove genhd.h

2022-02-02T14:49:59+00:00

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

block: drop unused includes in

2021-10-18T12:17:02+00:00

Drop various include not actually used in genhd.h itself, and move the remaning includes closer together. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn Link: https://lore.kernel.org/r/20210920123328.1399408-15-hch@lst.de Signed-off-by: Jens Axboe

block: switch partition lookup to use struct block_device

2020-12-01T21:53:40+00:00

Use struct block_device to lookup partitions on a disk. This removes all usage of struct hd_struct from the I/O path. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Hannes Reinecke Acked-by: Coly Li [bcache] Acked-by: Chao Yu [f2fs] Signed-off-by: Jens Axboe

block: allocate struct hd_struct as part of struct bdev_inode

2020-12-01T21:53:40+00:00

Allocate hd_struct together with struct block_device to pre-load the lifetime rule changes in preparation of merging the two structures. Note that part0 was previously embedded into struct gendisk, but is a separate allocation now, and already points to the block_device instead of the hd_struct. The lifetime of struct gendisk is still controlled by the struct device embedded in the part0 hd_struct. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block: move disk stat accounting to struct block_device

2020-12-01T21:53:40+00:00

Move the dkstats and stamp field to struct block_device in preparation of killing struct hd_struct. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe

block: use __this_cpu_add() instead of access by smp_processor_id()

2020-05-27T11:21:23+00:00

Most architectures have fast path to access percpu for current cpu. The required preempt_disable() is provided by part_stat_lock(). [hch: rebased] Signed-off-by: Konstantin Khlebnikov Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe