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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-07-04 09:31:11 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-07-04 09:52:13 +0200
commit30c00eda73d5db5bd64dd0c370161abd8df5ba4a (patch)
tree87b5a34323eb98edf504e51b2d8e0291559579e3 /arch/mn10300/kernel/asm-offsets.c
parent27f8221af406e43b529a5425bc99c9b1e9bdf521 (diff)
block: blk_rq_map_kern uses the bounce buffers for stack buffers
blk_rq_map_kern is used for kernel internal I/Os. Some callers use this function with stack buffers but DMA to/from the stack buffers leads to memory corruption on a non-coherent platform. This patch make blk_rq_map_kern uses the bounce buffers if a caller passes a stack buffer (on the all platforms for simplicity). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Tejun Heo <htejun@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/mn10300/kernel/asm-offsets.c')
0 files changed, 0 insertions, 0 deletions