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Diffstat (limited to 'mm/truncate.c')
-rw-r--r--mm/truncate.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/mm/truncate.c b/mm/truncate.c
index 3d2ae1f423d..a9566752913 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -321,11 +321,12 @@ EXPORT_SYMBOL(truncate_inode_pages);
* pagetables.
*/
unsigned long invalidate_mapping_pages(struct address_space *mapping,
- pgoff_t start, pgoff_t end)
+ pgoff_t start, pgoff_t end)
{
struct pagevec pvec;
pgoff_t next = start;
- unsigned long ret = 0;
+ unsigned long ret;
+ unsigned long count = 0;
int i;
pagevec_init(&pvec, 0);
@@ -352,9 +353,15 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
if (lock_failed)
continue;
- ret += invalidate_inode_page(page);
-
+ ret = invalidate_inode_page(page);
unlock_page(page);
+ /*
+ * Invalidation is a hint that the page is no longer
+ * of interest and try to speed up its reclaim.
+ */
+ if (!ret)
+ deactivate_page(page);
+ count += ret;
if (next > end)
break;
}
@@ -362,7 +369,7 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
mem_cgroup_uncharge_end();
cond_resched();
}
- return ret;
+ return count;
}
EXPORT_SYMBOL(invalidate_mapping_pages);