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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
This commit is contained in:
Ned Bass 2014-09-19 11:42:13 -07:00 committed by Brian Behlendorf
parent 5043deaa40
commit cfd3549a53
1 changed files with 0 additions and 6 deletions
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6
lib/libzpool/kernel.c
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@ -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 * PTHREAD_STACK_MIN is the minimum stack required for a NULL
* procedure in user space and is added in to the stack * procedure in user space and is added in to the stack
* requirements. * 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; stack = PTHREAD_STACK_MIN + MAX(stksize, STACK_SIZE) * 4;