diff options
Diffstat (limited to 'drivers/staging/ramzswap')
| -rw-r--r-- | drivers/staging/ramzswap/ramzswap_drv.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c index 3035addfaed..7e0a3fab9cd 100644 --- a/drivers/staging/ramzswap/ramzswap_drv.c +++ b/drivers/staging/ramzswap/ramzswap_drv.c @@ -593,6 +593,10 @@ static void ramzswap_free_page(struct ramzswap *rzs, size_t index) 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 @@ static int ramzswap_write(struct ramzswap *rzs, struct bio *bio) * 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); |