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[ Upstream commitd6c02a9beb] In commited996a52c8("block: simplify and cleanup bvec pool handling"), the value of the slab index is incremented by one in bvec_alloc() after the allocation is done to indicate an index value of 0 does not need to be later freed. bvec_nr_vecs() was not updated accordingly, and thus returns the wrong value. Decrement idx before performing the lookup. Fixes:ed996a52c8("block: simplify and cleanup bvec pool handling") Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.