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commite647e29196upstream. Commite2b911c535("ext4: clean up feature test macros with predicate functions") broke the EXT4_IOC_GROUP_ADD ioctl. This was not noticed since only very old versions of resize2fs (before e2fsprogs 1.42) use this ioctl. However, using a new kernel with an enterprise Linux userspace will cause attempts to use online resize to fail with "No reserved GDT blocks". Fixes:e2b911c535("ext4: clean up feature test macros with predicate...") Cc: stable@kernel.org # v4.4 Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: ruippan (潘睿) <ruippan@tencent.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.