Documentation/sysctl: coredump: add %F for pidfd number

In commit b5325b2a270f ("coredump: hand a pidfd to the usermode coredump
helper") a new core_pattern specifier, %F, was added to provide a pidfs
to the usermode helper process referring to the crashed process.

Update the documentation to include the new core_pattern specifier.

Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250612060204.1159734-1-carnil@debian.org

diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
index dd49a89a62d3542fa1a599f318dff26589e1d57b..f1b2ab219a080d8a58b3c0b63368fa85f99ed12e 100644 (file)
--- a/Documentation/admin-guide/sysctl/kernel.rst
+++ b/Documentation/admin-guide/sysctl/kernel.rst
@@ -177,6 +177,7 @@ core_pattern
        %E              executable path
        %c              maximum size of core file by resource limit RLIMIT_CORE
        %C              CPU the task ran on
+       %F              pidfd number
        %<OTHER>        both are dropped
        ========        ==========================================