Commit 3a95a561 authored by Viktor Malik's avatar Viktor Malik Committed by Alexei Starovoitov
Browse files

uaccess: Define pagefault lock guard 



Define a pagefault lock guard which allows to simplify functions that
need to disable page faults.

Signed-off-by: default avatarViktor Malik <vmalik@redhat.com>
Link: https://lore.kernel.org/r/8a01beb0b671923976f08297d81242bb2129881d.1750917800.git.vmalik@redhat.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent d83caf7c

include/linux/uaccess.h

+2 −0
Original line number Diff line number Diff line
@@ -296,6 +296,8 @@ static inline bool pagefault_disabled(void) 
 */

#define faulthandler_disabled() (pagefault_disabled() || in_atomic())



DEFINE_LOCK_GUARD_0(pagefault, pagefault_disable(), pagefault_enable())



#ifndef CONFIG_ARCH_HAS_SUBPAGE_FAULTS



/**