[PATCH 2/5] squashfs: always use bio_kmalloc in squashfs_bio_read

From: Christoph Hellwig
Date: Tue Mar 01 2022 - 03:46:21 EST


If a plain kmalloc that is not backed by a mempool is safe here for a
large read (and the actual page allocations), it must also be for a
small one, so simplify the code a bit.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/squashfs/block.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index 622c844f6d118..4311a32218928 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -86,16 +86,11 @@ static int squashfs_bio_read(struct super_block *sb, u64 index, int length,
int error, i;
struct bio *bio;

- if (page_count <= BIO_MAX_VECS) {
- bio = bio_alloc(sb->s_bdev, page_count, REQ_OP_READ, GFP_NOIO);
- } else {
- bio = bio_kmalloc(GFP_NOIO, page_count);
- bio_set_dev(bio, sb->s_bdev);
- bio->bi_opf = REQ_OP_READ;
- }
-
+ bio = bio_kmalloc(GFP_NOIO, page_count);
if (!bio)
return -ENOMEM;
+ bio_set_dev(bio, sb->s_bdev);
+ bio->bi_opf = REQ_OP_READ;

bio->bi_iter.bi_sector = block * (msblk->devblksize >> SECTOR_SHIFT);

--
2.30.2