]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/huge_memory.c: use head to emphasize the purpose of page
authorWei Yang <richardw.yang@linux.intel.com>
Fri, 31 Jan 2020 06:14:32 +0000 (22:14 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 31 Jan 2020 18:30:39 +0000 (10:30 -0800)
commita8803e6c177f490fe5624397b07f4eb05a15f532
tree2f4391a350de79f0e7d08facaa2f46f01821015d
parentcb829624867b5ab10bc6a7036d183b1b82bfe9f8
mm/huge_memory.c: use head to emphasize the purpose of page

During split huge page, it checks the property of the page.  Currently
we do the check on page and head without emphasizing the check is on the
compound page.  In case the page passed to split_huge_page_to_list is a
tail page, audience would take some time to think about whether the
check is on compound page or tail page itself.

To make it explicit, use head instead of page for those checks.  After
this, audience would be more clear about the checks are on compound page
and the page is used to do the split and dump error message if failed.

Link: http://lkml.kernel.org/r/20200110032610.26499-2-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/huge_memory.c