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author | 2013-11-18 22:11:42 +0900 | |
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committer | 2013-11-18 12:31:27 -0700 | |
commit | 34f2fd8dfe6185b0eaaf7d661281713a6170b077 (patch) | |
tree | c33d3575e41db4350bce9e6f30d684ce735bebaf /fs/bio.c | |
parent | Revert "init/Kconfig: add option to disable kernel compression" (diff) | |
download | linux-34f2fd8dfe6185b0eaaf7d661281713a6170b077.tar.gz linux-34f2fd8dfe6185b0eaaf7d661281713a6170b077.tar.bz2 linux-34f2fd8dfe6185b0eaaf7d661281713a6170b077.zip |
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>
Diffstat (limited to 'fs/bio.c')
-rw-r--r-- | fs/bio.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -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; |