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mm: rotate_reclaimable_page() cleanup

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Clean up messy conditional calling of test_clear_page_writeback() from both
rotate_reclaimable_page() and end_page_writeback().

The only user of rotate_reclaimable_page() is end_page_writeback() so this is
OK.

Signed-off-by: Miklos Szeredi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Miklos Szeredi 2008-04-28 02:12:38 -07:00 • committed by Linus Torvalds
commit ac6aadb24b
3 changed files with 19 additions and 30 deletions
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10
mm/filemap.c
View file

@ -576,10 +576,12 @@ EXPORT_SYMBOL(unlock_page);
*/
void end_page_writeback(struct page *page)
{
if (!TestClearPageReclaim(page) || rotate_reclaimable_page(page)) {
if (!test_clear_page_writeback(page))
BUG();
}
if (TestClearPageReclaim(page))
rotate_reclaimable_page(page);
if (!test_clear_page_writeback(page))
BUG();
smp_mb__after_clear_bit();
wake_up_page(page, PG_writeback);
}