[PATCH 5.10 03/21] loop: Use blk_validate_block_size() to validate block size

Greg Kroah-Hartman
2021-11-19T17:38:57Z

From: Xie Yongji <xieyongji@bytedance.com>

commit af3c570fb0df422b4906ebd11c1bf363d89961d5 upstream.

Remove loop_validate_block_size() and use the block layer helper
to validate block size.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20211026144015.188-4-xieyongji@bytedance.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Cc: Tadeusz Struk <tadeusz.struk@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/block/loop.c | 17 ++---------------
1 file changed, 2 insertions(+), 15 deletions(-)

--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -229,19 +229,6 @@ static void __loop_update_dio(struct loo
}

/**
- * loop_validate_block_size() - validates the passed in block size
- * @bsize: size to validate
- */
-static int
-loop_validate_block_size(unsigned short bsize)
-{
- if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
- return -EINVAL;
-
- return 0;
-}
-
-/**
* loop_set_size() - sets device size and notifies userspace
* @lo: struct loop_device to set the size for
* @size: new size of the loop device
@@ -1121,7 +1108,7 @@ static int loop_configure(struct loop_de
}

if (config->block_size) {
- error = loop_validate_block_size(config->block_size);
+ error = blk_validate_block_size(config->block_size);
if (error)
goto out_unlock;
}
@@ -1617,7 +1604,7 @@ static int loop_set_block_size(struct lo
if (lo->lo_state != Lo_bound)
return -ENXIO;

- err = loop_validate_block_size(arg);
+ err = blk_validate_block_size(arg);
if (err)
return err;