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[ Upstream commit 825d487583089f9a33d31650c9c41f6474aab7fc ] Some filesystems have timestamps with coarse precision that may allow for a recently built object file to have the same timestamp as the updated time on one of its dependency files. When that happens, the object file doesn't get rebuilt as it should. This is especially the case on filesystems that don't have sub-second time precision, such as ext3 or Ext4 with 128B inodes. Let's prevent that by making sure updated dependency files have a newer timestamp than the first file we created (i.e. autoksyms.h.tmpnew). Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com> Signed-off-by: Nicolas Pitre <nico@linaro.org> Tested-by: Thomas Lindroth <thomas.lindroth@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> 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.