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mm: move gup() -> posix mlock() error conversion out of __mm_populate 

This is praparation to moving mm_populate()-related code out of
mm/mlock.c.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2015-04-14 15:44:42 -07:00 committed by Linus Torvalds
parent fc05f56621
commit c561259ca7
1 changed files with 7 additions and 4 deletions
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11
mm/mlock.c
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@ -712,7 +712,6 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors)
ret = 0;
continue; /* continue at next VMA */
}
ret = __mlock_posix_error_return(ret);
break;
}
nend = nstart + ret * PAGE_SIZE;
@ -750,9 +749,13 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len)
error = do_mlock(start, len, 1);
up_write(&current->mm->mmap_sem);
if (!error)
error = __mm_populate(start, len, 0);
return error;
if (error)
return error;
error = __mm_populate(start, len, 0);
if (error)
return __mlock_posix_error_return(error);
return 0;
}
SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len)