[PATCHv4 07/17] zram: permit reclaim in recompression handle allocation

[Sergey Senozhatsky]

Recompression path can now permit direct reclaim during
new zs_handle allocation, because it's not atomic anymore.

Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
---
 drivers/block/zram/zram_drv.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 0404f5e35cb4..33a7bfa53861 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1979,17 +1979,11 @@ static int recompress_slot(struct zram *zram, u32 index, struct page *page,
 		return 0;
 
 	/*
-	 * No direct reclaim (slow path) for handle allocation and no
-	 * re-compression attempt (unlike in zram_write_bvec()) since
-	 * we already have stored that object in zsmalloc. If we cannot
-	 * alloc memory for recompressed object then we bail out and
-	 * simply keep the old (existing) object in zsmalloc.
+	 * If we cannot alloc memory for recompressed object then we bail out
+	 * and simply keep the old (existing) object in zsmalloc.
 	 */
 	handle_new = zs_malloc(zram->mem_pool, comp_len_new,
-			       __GFP_KSWAPD_RECLAIM |
-			       __GFP_NOWARN |
-			       __GFP_HIGHMEM |
-			       __GFP_MOVABLE);
+			       GFP_NOIO | __GFP_HIGHMEM | __GFP_MOVABLE);
 	if (IS_ERR_VALUE(handle_new)) {
 		zcomp_stream_put(zram->comps[prio], zstrm);
 		return PTR_ERR((void *)handle_new);
-- 
2.48.1.362.g079036d154-goog