path: root/include/linux/compat.h
diff options
authorChristopher Yeoh <cyeoh@au1.ibm.com>2012-05-31 16:26:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-31 17:49:32 -0700
commitac34ebb3a67e699edcb5ac72f19d31679369dfaa (patch)
tree21785208005952128545c0d7804c2dddf177766f /include/linux/compat.h
parenteventfd: change int to __u64 in eventfd_signal() (diff)
aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()
A cleanup of rw_copy_check_uvector and compat_rw_copy_check_uvector after changes made to support CMA in an earlier patch. Rather than having an additional check_access parameter to these functions, the first paramater type is overloaded to allow the caller to specify CHECK_IOVEC_ONLY which means check that the contents of the iovec are valid, but do not check the memory that they point to. This is used by process_vm_readv/writev where we need to validate that a iovec passed to the syscall is valid but do not want to check the memory that it points to at this point because it refers to an address space in another process. Signed-off-by: Chris Yeoh <yeohc@au1.ibm.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 5d46217f84ad..4e890394ef99 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -577,8 +577,7 @@ extern ssize_t compat_rw_copy_check_uvector(int type,
const struct compat_iovec __user *uvector,
unsigned long nr_segs,
unsigned long fast_segs, struct iovec *fast_pointer,
- struct iovec **ret_pointer,
- int check_access);
+ struct iovec **ret_pointer);
extern void __user *compat_alloc_user_space(unsigned long len);