* [PATCH bpf-next v5 1/4] uaccess: Define pagefault lock guard
[not found] <cover.1750252029.git.vmalik@redhat.com>
@ 2025-06-18 13:32 ` Viktor Malik
0 siblings, 0 replies; only message in thread
From: Viktor Malik @ 2025-06-18 13:32 UTC (permalink / raw)
To: bpf
Cc: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Eduard Zingerman, Song Liu, Yonghong Song,
John Fastabend, KP Singh, Stanislav Fomichev, Hao Luo, Jiri Olsa,
linux-kernel, Viktor Malik
Define a pagefault lock guard which allows to simplify functions that
need to disable page faults.
Signed-off-by: Viktor Malik <vmalik@redhat.com>
---
include/linux/uaccess.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index 7c06f4795670..1beb5b395d81 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -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
/**
--
2.49.0
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2025-06-18 13:32 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <cover.1750252029.git.vmalik@redhat.com>
2025-06-18 13:32 ` [PATCH bpf-next v5 1/4] uaccess: Define pagefault lock guard Viktor Malik
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).