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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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2af548dd44
This reverts commit cd544fd1dc9293c6702fab6effa63dac1cc67e99. As discussed in [1] this commit was a no-op because the mapping type was checked in vma_to_resize before move_vma is ever called. This meant that vm_ops->mremap() would never be called on such mappings. Furthermore, we've since expanded support of MREMAP_DONTUNMAP to non-anonymous mappings, and these special mappings are still protected by the existing check of !VM_DONTEXPAND and !VM_PFNMAP which will result in a -EINVAL. 1. https://lkml.org/lkml/2020/12/28/2340 Signed-off-by: Brian Geffon <bgeffon@google.com> Acked-by: Hugh Dickins <hughd@google.com> Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com> Signed-off-by: Lokesh Gidra <lokeshgidra@google.com> Link: https://lore.kernel.org/patchwork/patch/1401226/ Conflicts: include/linux/mm.h (Resolved minor conflict with manual rebase) Bug: 160737021 Bug: 169683130 Change-Id: I97d29e6a54cee07ba69d6bb880778ee1fea8ff7c |
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