Fix to the page reclaim code from Rik.
Anonymous pages which have buffers arise when
truncate_complete_page()'s call to ->releasepage() failed. Those pages
may still be mapped into process address spaces.
We should not remove them from the LRU, because that makes them
unswappable and they hang around until process exit.
vmscan.c | 12 ++----------
1 files changed, 2 insertions(+), 10 deletions(-)
--- 2.5.26/mm/vmscan.c~rmap-lru-fix Tue Jul 16 21:46:28 2002
+++ 2.5.26-akpm/mm/vmscan.c Tue Jul 16 21:59:41 2002
@@ -235,19 +235,11 @@ shrink_cache(int nr_pages, zone_t *class
if (try_to_release_page(page, gfp_mask)) {
if (!mapping) {
- /*
- * We must not allow an anon page
- * with no buffers to be visible on
- * the LRU, so we unlock the page after
- * taking the lru lock
- */
- spin_lock(&pagemap_lru_lock);
- unlock_page(page);
- __lru_cache_del(page);
-
/* effectively free the page here */
+ unlock_page(page);
page_cache_release(page);
+ spin_lock(&pagemap_lru_lock);
if (--nr_pages)
continue;
break;
.
-
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This archive was generated by hypermail 2b29 : Tue Jul 23 2002 - 22:00:22 EST