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bio: fix argument of __bio_add_page() for max_sectors > 0xffff 

The data type of max_sectors and max_hw_sectors in queue settings are
unsigned int.  But these values are passed to __bio_add_page() as an
argument whose data type is unsigned short.  In the worst case such as
max_sectors is 0x10000, bio_add_page() can't add a page and IOs can't
proceed.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Akinobu Mita 2013-11-18 22:11:42 +09:00 committed by Jens Axboe
parent 2d3c627502
commit 34f2fd8dfe
1 changed files with 1 additions and 1 deletions
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fs/bio.c
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@ -601,7 +601,7 @@ EXPORT_SYMBOL(bio_get_nr_vecs);
static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
*page, unsigned int len, unsigned int offset,
unsigned short max_sectors)
unsigned int max_sectors)
{
int retried_segments = 0;
struct bio_vec *bvec;