The patch titled
permit mempool_free(NULL)
has been added to the -mm tree. Its filename is
permit-mempool_freenull.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: permit mempool_free(NULL)
From: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Christian Borntraeger points out that mempool_free() doesn't noop when
handed NULL. This is inconsistent with the other free-like functions
in the kernel.
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempool.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/mempool.c~permit-mempool_freenull mm/mempool.c
--- a/mm/mempool.c~permit-mempool_freenull
+++ a/mm/mempool.c
@@ -263,6 +263,9 @@ void mempool_free(void *element, mempool
{
unsigned long flags;
+ if (unlikely(element == NULL))
+ return;
+
smp_mb();
if (pool->curr_nr < pool->min_nr) {
spin_lock_irqsave(&pool->lock, flags);
_
Patches currently in -mm which might be from rusty@xxxxxxxxxxxxxxx are
git-kbuild.patch
paravirt-helper-to-disable-all-io-space-fix.patch
mm-clean-up-and-kernelify-shrinker-registration.patch
mm-clean-up-and-kernelify-shrinker-registration-vs-git-nfs.patch
use-menuconfig-objects-ii-module-menu.patch
fix-stop_machine_run-problem-with-naughty-real-time-process.patch
cpu-hotplug-fix-ksoftirqd-termination-on-cpu-hotplug-with-naughty-realtime-process.patch
cpu-hotplug-fix-ksoftirqd-termination-on-cpu-hotplug-with-naughty-realtime-process-fix.patch
modules-remove-modlist_lock.patch
permit-mempool_freenull.patch
lguest-export-symbols-for-lguest-as-a-module.patch
lguest-the-guest-code.patch
fix-lguest-w-lockdep.patch
lguest-the-guest-code-lguest-fix-tsc-divide-error-0000-boot-crash.patch
lguest-the-host-code.patch
lguest-the-host-code-lguest-vs-clockevents-fix-resume-logic.patch
lguest-the-host-code-handle-dodgy-non-existent-tsc-host-code.patch
lguest-the-host-code-handle-dodgy-non-existent-tsc-guest-code.patch
lguest-the-asm-offsets.patch
lguest-the-makefile-and-kconfig.patch
lguest-the-console-driver.patch
lguest-the-net-driver.patch
lguest-the-block-driver.patch
lguest-the-documentation-example-launcher.patch
lguest-the-documentation-example-launcher-fix-guests-1g.patch
readahead-introduce-pg_readahead.patch
readahead-add-look-ahead-support-to-__do_page_cache_readahead.patch
readahead-min_ra_pages-max_ra_pages-macros.patch
readahead-data-structure-and-routines.patch
readahead-on-demand-readahead-logic.patch
readahead-convert-filemap-invocations.patch
readahead-convert-splice-invocations.patch
readahead-convert-ext3-ext4-invocations.patch
readahead-remove-the-old-algorithm.patch
readahead-move-synchronous-readahead-call-out-of-splice-loop.patch
readahead-pass-real-splice-size.patch
mm-share-pg_readahead-and-pg_reclaim.patch
readahead-split-ondemand-readahead-interface-into-two-functions.patch
readahead-sanify-file_ra_state-names.patch
define-new-percpu-interface-for-shared-data-version-4.patch
use-the-new-percpu-interface-for-shared-data-version-4.patch
mm-clean-up-and-kernelify-shrinker-registration-reiser4.patch
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