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btrfs: use specialized page copying helpers in btrfs_clone_extent_buffer

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The copy_page is usually optimized and can be faster than memcpy.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-11-08 17:56:24 +01:00
parent d24ee97b96
commit fba1acf9ff
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -4720,9 +4720,9 @@ struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src)
WARN_ON(PageDirty(p));
SetPageUptodate(p);
new->pages[i] = p;
copy_page(page_address(p), page_address(src->pages[i]));
}
copy_extent_buffer(new, src, 0, 0, src->len);
set_bit(EXTENT_BUFFER_UPTODATE, &new->bflags);
set_bit(EXTENT_BUFFER_DUMMY, &new->bflags);