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| Filename | Latest commit message | Latest commit date |
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d96adb9b07
The current logic of calculating sg_nents can fail if data_offset % PAGE_SIZE is not zero. For example - PAGE_SIZE = 4096 data_len = 3072 data_offset = 3072 As per current logic sg_nents = max(1UL, DIV_ROUND_UP(data_len, PAGE_SIZE)); sg_nents = max(1UL, DIV_ROUND_UP(3072, 4096)); sg_nents = 1 But as data_offset % PAGE_SIZE = 3072 we should skip 3072 bytes skip = 3K sg_nents = max(1UL, DIV_ROUND_UP(3K(skip) + 3K(data_len), 4K(PAGE_SIZE)); sg_nents = 2; This patch fixes this issue by adding skip to data_len. Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> |
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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.