| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 57/69] nbd: fix 64-bit division | Date | Wed, 19 Apr 2017 16:43:13 +0200 |
| |
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jens Axboe <axboe@fb.com>
commit e88f72cb9f54f6d244e55f629fe5e2f34ca6f9ed upstream.
We have this:
ERROR: "__aeabi_ldivmod" [drivers/block/nbd.ko] undefined! ERROR: "__divdi3" [drivers/block/nbd.ko] undefined! nbd.c:(.text+0x247c72): undefined reference to `__divdi3'
due to a recent commit, that did 64-bit division. Use the proper divider function so that 32-bit compiles don't break.
Fixes: ef77b515243b ("nbd: use loff_t for blocksize and nbd_set_size args") Signed-off-by: Jens Axboe <axboe@fb.com> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/block/nbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -648,7 +648,7 @@ static int __nbd_ioctl(struct block_devi case NBD_SET_SIZE: return nbd_size_set(nbd, bdev, nbd->blksize, - arg / nbd->blksize); + div_s64(arg, nbd->blksize)); case NBD_SET_SIZE_BLOCKS: return nbd_size_set(nbd, bdev, nbd->blksize, arg);
|