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| author | Hongyu Jin <hongyu.jin@unisoc.com> | 2024-01-24 08:35:54 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2024-02-20 22:22:55 +0300 |
| commit | e9b2238e47cb66521381c0bf9234e979afa19d77 (patch) | |
| tree | 19b73de3634979bc1fef64ea082e9c330d504b2f /include/linux/dm-bufio.h | |
| parent | 6e5f0f6383b4896c7e9b943d84b136149d0f45e9 (diff) | |
| download | linux-e9b2238e47cb66521381c0bf9234e979afa19d77.tar.xz | |
dm bufio: Support IO priority
Some IO will dispatch from kworker with different io_context settings
than the submitting task, we may need to specify a priority to avoid
losing priority.
Add dm_bufio_read_with_ioprio() and dm_bufio_prefetch_with_ioprio()
for use by bufio users to pass an ioprio other than IOPRIO_DEFAULT.
Co-developed-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Hongyu Jin <hongyu.jin@unisoc.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
[snitzer: introduced _with_ioprio() wrappers to reduce churn]
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'include/linux/dm-bufio.h')
| -rw-r--r-- | include/linux/dm-bufio.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/dm-bufio.h b/include/linux/dm-bufio.h index 75e7d8cbb532..d1503b815a78 100644 --- a/include/linux/dm-bufio.h +++ b/include/linux/dm-bufio.h @@ -64,6 +64,9 @@ void dm_bufio_set_sector_offset(struct dm_bufio_client *c, sector_t start); void *dm_bufio_read(struct dm_bufio_client *c, sector_t block, struct dm_buffer **bp); +void *dm_bufio_read_with_ioprio(struct dm_bufio_client *c, sector_t block, + struct dm_buffer **bp, unsigned short ioprio); + /* * Like dm_bufio_read, but return buffer from cache, don't read * it. If the buffer is not in the cache, return NULL. @@ -86,6 +89,10 @@ void *dm_bufio_new(struct dm_bufio_client *c, sector_t block, void dm_bufio_prefetch(struct dm_bufio_client *c, sector_t block, unsigned int n_blocks); +void dm_bufio_prefetch_with_ioprio(struct dm_bufio_client *c, + sector_t block, unsigned int n_blocks, + unsigned short ioprio); + /* * Release a reference obtained with dm_bufio_{read,get,new}. The data * pointer and dm_buffer pointer is no longer valid after this call. |