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When CONFIG_DMA_ENGINE_RAID is enabled, unmap pool size can reach to 256. But in struct dmaengine_unmap_data, map_cnt is only u8, wrapping to 0, if the unmap pool is maximally used. This triggers BUG() when struct dmaengine_unmap_data is freed. Use u16 to fix the problem. Signed-off-by: Zi Yan <zi.yan@cs.rutgers.edu> Signed-off-by: Vinod Koul <vinod.koul@intel.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.