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mm/shmem.c: suppress shift warning 

mm/shmem.c:1948 shmem_getpage_gfp() warn: should '(((1) << 12) / 512) << folio_order(folio)' be a 64 bit type?

On i386, so an unsigned long is 32-bit, but i_blocks is a 64-bit blkcnt_t.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Jessica Clarke <jrtc27@jrtc27.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Andrew Morton 2022-05-25 15:17:09 -07:00 committed by akpm
parent 0710d0122a
commit fa020a2b87
1 changed files with 1 additions and 1 deletions
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2
mm/shmem.c
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@ -1945,7 +1945,7 @@ alloc_nohuge:
spin_lock_irq(&info->lock);
info->alloced += folio_nr_pages(folio);
inode->i_blocks += BLOCKS_PER_PAGE << folio_order(folio);
inode->i_blocks += (blkcnt_t)BLOCKS_PER_PAGE << folio_order(folio);
shmem_recalc_inode(inode);
spin_unlock_irq(&info->lock);
alloced = true;