diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-03-03 07:01:40 -0700 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2024-03-06 08:59:52 -0800 |
| commit | c396b90e502691fc6ff7b43984cfd9d1b15aaa80 (patch) | |
| tree | 9c36ee2b90f098178645ada275d2c936cfaa8086 /drivers/md/md.h | |
| parent | 3a889fdce7e8927a7d81d11ca3d26608b3be1c31 (diff) | |
md: add a mddev_trace_remap helper
Add a helper to trace bio remapping that hides some argument
dereferences and the check for a DM-mapped MD device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed--by: Song Liu <song@kernel.org>
Tested-by: Song Liu <song@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240303140150.5435-2-hch@lst.de
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index 556db28a49aa..928086b638a3 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -18,6 +18,7 @@ #include <linux/timer.h> #include <linux/wait.h> #include <linux/workqueue.h> +#include <trace/events/block.h> #include "md-cluster.h" #define MaxSector (~(sector_t)0) @@ -910,4 +911,11 @@ int do_md_run(struct mddev *mddev); extern const struct block_device_operations md_fops; +static inline void mddev_trace_remap(struct mddev *mddev, struct bio *bio, + sector_t sector) +{ + if (mddev->gendisk) + trace_block_bio_remap(bio, disk_devt(mddev->gendisk), sector); +} + #endif /* _MD_MD_H */ |