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| author | Mikulas Patocka <mpatocka@redhat.com> | 2017-01-04 20:23:52 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-03-07 13:28:33 -0500 |
| commit | 400a0befc96240f7bb2a53b9622deffd55d385fe (patch) | |
| tree | e58983fef536dfc8e03d7d1c0da16d8ad1e768f4 /drivers/md/dm-bufio.h | |
| parent | 9b4b5a797cf8a8d904df979891a8de53f2cb9694 (diff) | |
| download | linux-400a0befc96240f7bb2a53b9622deffd55d385fe.tar.bz2 | |
dm bufio: add sector start offset to dm-bufio interface
Introduce dm_bufio_set_sector_offset() interface to allow setting a
sector offset for a dm-bufio client. This is a prereq for the DM
integrity target.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-bufio.h')
| -rw-r--r-- | drivers/md/dm-bufio.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/dm-bufio.h b/drivers/md/dm-bufio.h index c096779a7292..b6d8f53ec15b 100644 --- a/drivers/md/dm-bufio.h +++ b/drivers/md/dm-bufio.h @@ -32,6 +32,13 @@ dm_bufio_client_create(struct block_device *bdev, unsigned block_size, void dm_bufio_client_destroy(struct dm_bufio_client *c); /* + * Set the sector range. + * When this function is called, there must be no I/O in progress on the bufio + * client. + */ +void dm_bufio_set_sector_offset(struct dm_bufio_client *c, sector_t start); + +/* * WARNING: to avoid deadlocks, these conditions are observed: * * - At most one thread can hold at most "reserved_buffers" simultaneously. |