Staging: ramzswap: Remove redundant check for zero page
ramzswap_free_page() already handles the case for zero filled
pages. So, remove redundant logic for the same in ramzswap_write().
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c
index 3035add..7e0a3fa 100644
--- a/drivers/staging/ramzswap/ramzswap_drv.c
+++ b/drivers/staging/ramzswap/ramzswap_drv.c
@@ -593,6 +593,10 @@
u32 offset = rzs->table[index].offset;
if (unlikely(!page)) {
+ /*
+ * No memory is allocated for zero filled pages.
+ * Simply clear zero page flag.
+ */
if (rzs_test_flag(rzs, index, RZS_ZERO)) {
rzs_clear_flag(rzs, index, RZS_ZERO);
rzs_stat_dec(&rzs->stats.pages_zero);
@@ -789,18 +793,9 @@
* is no longer referenced by any process. So, its now safe
* to free the memory that was allocated for this page.
*/
- if (rzs->table[index].page)
+ if (rzs->table[index].page || rzs_test_flag(rzs, index, RZS_ZERO))
ramzswap_free_page(rzs, index);
- /*
- * No memory is allocated for zero filled pages.
- * Simply clear zero page flag.
- */
- if (rzs_test_flag(rzs, index, RZS_ZERO)) {
- rzs_stat_dec(&rzs->stats.pages_zero);
- rzs_clear_flag(rzs, index, RZS_ZERO);
- }
-
mutex_lock(&rzs->lock);
user_mem = kmap_atomic(page, KM_USER0);