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btrfs: use round_up wrapper in num_extent_pages

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Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2018-07-04 17:49:31 +02:00
parent 65ad010488
commit 8791d43207
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/extent_io.h
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@ -442,8 +442,8 @@ void wait_on_extent_buffer_writeback(struct extent_buffer *eb);
static inline unsigned long num_extent_pages(const struct extent_buffer *eb)
{
return ((eb->start + eb->len + PAGE_SIZE - 1) >> PAGE_SHIFT) -
(eb->start >> PAGE_SHIFT);
return (round_up(eb->start + eb->len, PAGE_SIZE) >> PAGE_SHIFT) -
(eb->start >> PAGE_SHIFT);
}
static inline void extent_buffer_get(struct extent_buffer *eb)