Remove obsolete comment about guard pages

Remove an obsolete comment that refers to code removed by commit
79c6e4c4. The code and comment related to space consumed by guard
pages in user-space stacks, which we no longer take into account.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2722

diff --git a/lib/libzpool/kernel.c b/lib/libzpool/kernel.c
index ba232425d3c11c68fb96216d1de2a6b87597d151..a1bb973b1fb17ab8bcf27a0af09f9fbf4356d726 100644 (file)
--- a/lib/libzpool/kernel.c
+++ b/lib/libzpool/kernel.c
@@ -168,12 +168,6 @@ zk_thread_create(caddr_t stk, size_t stksize, thread_func_t func, void *arg,
         * PTHREAD_STACK_MIN is the minimum stack required for a NULL
         * procedure in user space and is added in to the stack
         * requirements.
-        *
-        * Some buggy NPTL threading implementations include the
-        * guard area within the stack size allocations.  In
-        * this case we allocate an extra page to account for the
-        * guard area since we only have two pages of usable stack
-        * on Linux.
         */
 
        stack = PTHREAD_STACK_MIN + MAX(stksize, STACK_SIZE) * 4;