lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mlock: make mlock error return Posixly Correct

Browse Source 
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>
This commit is contained in:
Lee Schermerhorn
2008-10-18 20:26:56 -07:00
committed by Linus Torvalds
parent c11d69d8c8
commit 9978ad583e
2 changed files with 28 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
mm/memory.c
View File

@@ -2821,7 +2821,7 @@ int make_pages_present(unsigned long addr, unsigned long end)
len, write, 0, NULL, NULL);
if (ret < 0)
return ret;
return ret == len ? 0 : -1;
return ret == len ? 0 : -EFAULT;
}
#if !defined(__HAVE_ARCH_GATE_AREA)