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| author | Lee Schermerhorn <lee.schermerhorn@hp.com> | 2008-10-18 20:26:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 08:52:31 -0700 |
| commit | 9978ad583e100945b74e4f33e73317983ea32df9 (patch) | |
| tree | 132d3a06664e04cac4635ddba55a0ec36ff2a001 /mm/memory.c | |
| parent | c11d69d8c830e09a0e7b3935c952afb26c48bba8 (diff) | |
| download | lwn-9978ad583e100945b74e4f33e73317983ea32df9.tar.gz lwn-9978ad583e100945b74e4f33e73317983ea32df9.zip | |
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>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index b8487f8cd82e..ba86b436b85f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -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) |