Sparse throws warnings about the interval tree functions that are defined and then not used in the scrub bitmap code: fs/xfs/scrub/bitmap.c:57:1: warning: unused function 'xbitmap64_tree_iter_next' [-Wunused-function] INTERVAL_TREE_DEFINE(struct xbitmap64_node, bn_rbnode, uint64_t, ^ ./include/linux/interval_tree_generic.h:151:33: note: expanded from macro 'INTERVAL_TREE_DEFINE' ITSTATIC ITSTRUCT * \ ^ <scratch space>:3:1: note: expanded from here xbitmap64_tree_iter_next ^ fs/xfs/scrub/bitmap.c:331:1: warning: unused function 'xbitmap32_tree_iter_next' [-Wunused-function] INTERVAL_TREE_DEFINE(struct xbitmap32_node, bn_rbnode, uint32_t, ^ ./include/linux/interval_tree_generic.h:151:33: note: expanded from macro 'INTERVAL_TREE_DEFINE' ITSTATIC ITSTRUCT * \ ^ <scratch space>:59:1: note: expanded from here xbitmap32_tree_iter_next Fix these by marking the functions created by the interval tree creation macro as __maybe_unused to suppress this warning. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: "Darrick J. Wong" <djwong@kernel.org> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the reStructuredText markup notation. 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.
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