From: Jeff Layton Date: Fri, 20 Aug 2021 13:29:50 +0000 (-0400) Subject: fs: warn about impending deprecation of mandatory locks X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0febcf95cb2741ea05a542b71204e461c1dfce92;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git fs: warn about impending deprecation of mandatory locks [ Upstream commit fdd92b64d15bc4aec973caa25899afd782402e68 ] We've had CONFIG_MANDATORY_FILE_LOCKING since 2015 and a lot of distros have disabled it. Warn the stragglers that still use "-o mand" that we'll be dropping support for that mount option. Cc: stable@vger.kernel.org Signed-off-by: Jeff Layton Signed-off-by: Sasha Levin --- diff --git a/fs/namespace.c b/fs/namespace.c index 68457fa2f981..b9e30a385c01 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1670,8 +1670,12 @@ static inline bool may_mount(void) } #ifdef CONFIG_MANDATORY_FILE_LOCKING -static inline bool may_mandlock(void) +static bool may_mandlock(void) { + pr_warn_once("======================================================\n" + "WARNING: the mand mount option is being deprecated and\n" + " will be removed in v5.15!\n" + "======================================================\n"); return capable(CAP_SYS_ADMIN); } #else