nbd: fix 64-bit division

commit e88f72c 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: ef77b51 ("nbd: use loff_t for blocksize and nbd_set_size args") Signed-off-by: Jens Axboe <[email protected]> Cc: Ben Hutchings <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
linux-scraping · Apr 21, 2017 · 25640e7 · 25640e7
1 parent 7599166
commit 25640e7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
@@ -648,7 +648,7 @@ static int __nbd_ioctl(struct block_device *bdev, struct nbd_device *nbd,
 
  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);