[PATCH 08/10] ext4: reduce stack footprint in ext4_end_bio()

From: Anton Suvorov
Date: Wed Jun 02 2021 - 11:31:28 EST


Stack usage reduced (measured with allyesconfig):

./fs/ext4/page-io.c ext4_end_bio 224 88 -136

Signed-off-by: Anton Suvorov <warwish@xxxxxxxxxxxxxx>
---
fs/ext4/page-io.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index f038d578d8d8..56074f2f5e63 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -323,10 +323,9 @@ static void ext4_end_bio(struct bio *bio)
{
ext4_io_end_t *io_end = bio->bi_private;
sector_t bi_sector = bio->bi_iter.bi_sector;
- char b[BDEVNAME_SIZE];

- if (WARN_ONCE(!io_end, "io_end is NULL: %s: sector %Lu len %u err %d\n",
- bio_devname(bio, b),
+ if (WARN_ONCE(!io_end, "io_end is NULL: %pg: sector %llu len %u err %d\n",
+ bio->bi_bdev,
(long long) bio->bi_iter.bi_sector,
(unsigned) bio_sectors(bio),
bio->bi_status)) {
--
2.25.1