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authorAndrew Morton <akpm@linux-foundation.org>2022-05-25 15:17:09 -0700
committerakpm <akpm@linux-foundation.org>2022-05-27 09:33:47 -0700
commitfa020a2b87d24016723fff4a4237deb612478a32 (patch)
tree9209d063f5946af9072077afa8cda19a2bc54f6f /mm
parent0710d0122abc93adcb9a70a78f1625c491f6ad91 (diff)
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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>
Diffstat (limited to 'mm')
-rw-r--r--mm/shmem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index 54149ce679be..c24f684022fd 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -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;