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| author | Omar Sandoval | 2017-08-24 09:03:43 +0200 |
|---|---|---|
| committer | Jens Axboe | 2017-08-31 21:51:14 +0200 |
| commit | 89e4fdecb51cf5535867026274bc97de9480ade5 (patch) | |
| tree | e0cbe2e118ea5ac8ff05a3bb8323d4142545335c /include/uapi/linux | |
| parent | loop: set physical block size to PAGE_SIZE (diff) | |
| download | kernel-qcow2-linux-89e4fdecb51cf5535867026274bc97de9480ade5.tar.gz kernel-qcow2-linux-89e4fdecb51cf5535867026274bc97de9480ade5.tar.xz kernel-qcow2-linux-89e4fdecb51cf5535867026274bc97de9480ade5.zip | |
loop: add ioctl for changing logical block size
This is a different approach from the first attempt in f2c6df7dbf9a
("loop: support 4k physical blocksize"). Rather than extending
LOOP_{GET,SET}_STATUS, add a separate ioctl just for setting the block
size.
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/loop.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/loop.h b/include/uapi/linux/loop.h index c8125ec1f4f2..23158dbe2424 100644 --- a/include/uapi/linux/loop.h +++ b/include/uapi/linux/loop.h @@ -88,6 +88,7 @@ struct loop_info64 { #define LOOP_CHANGE_FD 0x4C06 #define LOOP_SET_CAPACITY 0x4C07 #define LOOP_SET_DIRECT_IO 0x4C08 +#define LOOP_SET_BLOCK_SIZE 0x4C09 /* /dev/loop-control interface */ #define LOOP_CTL_ADD 0x4C80 |