The purpose of the function is to free all the pages comprising an
extent buffer. This can be achieved with a simple for loop rather than
the slitghly more involved 'do {} while' construct. So rewrite the
loop using a 'for' construct. Additionally we can never have an
extent_buffer that is 0 pages so remove the check for index == 0. No
functional changes.
Signed-off-by: Nikolay Borisov <nbori...@suse.com>
---
fs/btrfs/extent_io.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index cce6087d6880..4180a3b7e725 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4641,19 +4641,14 @@ int extent_buffer_under_io(struct extent_buffer *eb)
*/
static void btrfs_release_extent_buffer_page(struct extent_buffer *eb)
{
- unsigned long index;
- struct page *page;
+ int i;
int mapped = !test_bit(EXTENT_BUFFER_DUMMY, &eb->bflags);
BUG_ON(extent_buffer_under_io(eb));
- index = num_extent_pages(eb->start, eb->len);
- if (index == 0)
- return;
+ for (i = 0; i < num_extent_pages(eb->start, eb->len); i++) {
+ struct page *page = eb->pages[i];
- do {
- index--;
- page = eb->pages[index];
if (!page)
continue;
if (mapped)
@@ -4685,7 +4680,7 @@ static void btrfs_release_extent_buffer_page(struct
extent_buffer *eb)
/* One for when we allocated the page */
put_page(page);
- } while (index != 0);
+ }
}
/*
--
2.7.4
--
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