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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2013-11-18 22:11:42 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-11-18 12:31:27 -0700 |
| commit | 34f2fd8dfe6185b0eaaf7d661281713a6170b077 (patch) | |
| tree | c33d3575e41db4350bce9e6f30d684ce735bebaf | |
| parent | 2d3c627502f2a9b0a7de06a5a2df2365542a72c9 (diff) | |
| download | vfs-34f2fd8dfe6185b0eaaf7d661281713a6170b077.tar.gz | |
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>
| -rw-r--r-- | fs/bio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bio.c b/fs/bio.c index 2bdb4e25ee77db..33d79a4eb92d6e 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -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; |