After checking all possible call chains to init_tag_map here,
my tool finds that init_tag_map is never called in atomic context.
Thus GFP_ATOMIC is not necessary, and it can be replaced with GFP_KERNEL.
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <[email protected]>
---
block/blk-tag.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/blk-tag.c b/block/blk-tag.c
index 09f19c6..177b6d1 100644
--- a/block/blk-tag.c
+++ b/block/blk-tag.c
@@ -99,12 +99,12 @@ void blk_queue_free_tags(struct request_queue *q)
__func__, depth);
}
- tag_index = kzalloc(depth * sizeof(struct request *), GFP_ATOMIC);
+ tag_index = kzalloc(depth * sizeof(struct request *), GFP_KERNEL);
if (!tag_index)
goto fail;
nr_ulongs = ALIGN(depth, BITS_PER_LONG) / BITS_PER_LONG;
- tag_map = kzalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC);
+ tag_map = kzalloc(nr_ulongs * sizeof(unsigned long), GFP_KERNEL);
if (!tag_map)
goto fail;
--
1.7.9.5