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authorHuang Shijie <shijie8@gmail.com>2013-12-18 23:41:00 +0800
committerBrian Norris <computersforpeace@gmail.com>2014-01-27 21:55:03 -0800
commit0ff76a920e3558307567b45aa0a91fb914924bfc (patch)
treede9fcf55103af0f753dda69599989c3b63758112 /fs/nfsd/nfs3acl.c
parent06f216c83c25adadc231469d51ab133afdfe110a (diff)
mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf
The buffer pointer passed from the upper layer may points to a buffer in the stack or a buffer allocated by vmalloc, and etc.. This patch adds more sanity check to this buffer. After this patch, if we meet a buffer which is allocated by vmalloc or a buffer in the stack, we will use our own DMA buffer @data_buffer_dma to do the DMA operations. If the buffer is not the cases above, we will map it for DMA operations directly. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'fs/nfsd/nfs3acl.c')
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