ext4: add check to io_submit_init_bio



The bio_alloc() function can return NULL if the memory allocation
fails.  So we need to check for this.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

parent 5dc23bdd

fs/ext4/page-io.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -372,6 +372,8 @@ static int io_submit_init_bio(struct ext4_io_submit *io,
		struct bio *bio;

		bio = bio_alloc(GFP_NOIO, min(nvecs, BIO_MAX_PAGES));
		if (!bio)
		return -ENOMEM;
		bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9);
		bio->bi_bdev = bh->b_bdev;
		bio->bi_end_io = ext4_end_bio;