]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
mm, doc: cleanup and clarify munmap behavior for hugetlb memory
authorDavid Rientjes <rientjes@google.com>
Wed, 15 Apr 2015 23:14:26 +0000 (16:14 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 15 Apr 2015 23:35:19 +0000 (16:35 -0700)
commit80d6b94bd69a7a49b52bf503ef6a841f43cf5bbb
treeae701bac5add788e58774bb009f3a335e072eee2
parentae7efa507dee4813ec4bcdadebeec191e247d0c9
mm, doc: cleanup and clarify munmap behavior for hugetlb memory

munmap(2) of hugetlb memory requires a length that is hugepage aligned,
otherwise it may fail.  Add this to the documentation.

This also cleans up the documentation and separates it into logical units:
one part refers to MAP_HUGETLB and another part refers to requirements for
shared memory segments.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Eric B Munson <emunson@akamai.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Documentation/vm/hugetlbpage.txt