From 6d064f7a07fe8366e113f45931e5f2921dcabda2 Mon Sep 17 00:00:00 2001 From: Clemens Fruhwirth Date: Sat, 17 Dec 2016 17:10:25 +0100 Subject: [PATCH] Remove stale comment from rw_tryupgrade() Commit f58040c0fc8bc6490fcc75db7fc3e709dfc3c656 should have removed this comment which is no longer relevant. Reviewed-by: Brian Behlendorf Signed-off-by: Clemens Fruhwirth Issue #589 --- include/sys/rwlock.h | 8 -------- 1 file changed, 8 deletions(-) diff --git a/include/sys/rwlock.h b/include/sys/rwlock.h index 4197785..ffb7b90 100644 --- a/include/sys/rwlock.h +++ b/include/sys/rwlock.h @@ -213,14 +213,6 @@ RW_LOCK_HELD(krwlock_t *rwp) spl_rw_lockdep_on_maybe(rwp); \ }) -/* - * This implementation of rw_tryupgrade() behaves slightly differently - * from its counterparts on other platforms. It drops the RW_READER lock - * and then acquires the RW_WRITER lock leaving a small window where no - * lock is held. On other platforms the lock is never released during - * the upgrade process. This is necessary under Linux because the kernel - * does not provide an upgrade function. - */ #define rw_tryupgrade(rwp) \ ({ \ int _rc_ = 0; \ -- 2.40.0