tree 132d3a06664e04cac4635ddba55a0ec36ff2a001
parent c11d69d8c830e09a0e7b3935c952afb26c48bba8
author Lee Schermerhorn <lee.schermerhorn@hp.com> 1224386816 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1224517951 -0700

mlock: make mlock error return Posixly Correct

Rework Posix error return for mlock().

Posix requires error code for mlock*() system calls for some conditions
that differ from what kernel low level functions, such as
get_user_pages(), return for those conditions.  For more info, see:

http://marc.info/?l=linux-kernel&m=121750892930775&w=2

This patch provides the same translation of get_user_pages()
error codes to posix specified error codes in the context
of the mlock rework for unevictable lru.

[akpm@linux-foundation.org: fix build]
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>