From c858f5cebdd1ce8bf3ca7ffb994ce7873e3836a2 Mon Sep 17 00:00:00 2001 From: Andriy Gapon Date: Sun, 23 Dec 2012 12:56:04 +0000 Subject: [PATCH] lock.9: fix incorrect descriptions of LK_SHARED and LK_DOWNGRADE behavior Reviewed by: attilio MFC after: 5 days X-MFC after: r243900 --- share/man/man9/lock.9 | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/share/man/man9/lock.9 b/share/man/man9/lock.9 index bbcf5e810825..fd608d40ecb4 100644 --- a/share/man/man9/lock.9 +++ b/share/man/man9/lock.9 @@ -148,7 +148,9 @@ Flags indicating what action is to be taken. .Bl -tag -width ".Dv LK_CANRECURSE" .It Dv LK_SHARED Acquire a shared lock. -If an exclusive lock is currently held, it will be downgraded. +If an exclusive lock is currently held, +.Dv EDEADLK +will be returned. .It Dv LK_EXCLUSIVE Acquire an exclusive lock. If an exclusive lock is already held, and @@ -158,7 +160,8 @@ is not set, the system will .It Dv LK_DOWNGRADE Downgrade exclusive lock to a shared lock. Downgrading a shared lock is not permitted. -If an exclusive lock has been recursed, all references will be downgraded. +If an exclusive lock has been recursed, the system will +.Xr panic 9 . .It Dv LK_UPGRADE Upgrade a shared lock to an exclusive lock. If this call fails, the shared lock is lost.