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SubjectRe: [PATCH RT] mm: backing-dev: don't disable IRQs in wb_congested_put()
Hi Sebastian,

[auto build test ERROR on v4.5-rc3]
[also build test ERROR on next-20160208]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Sebastian-Andrzej-Siewior/mm-backing-dev-don-t-disable-IRQs-in-wb_congested_put/20160209-003634
config: x86_64-randconfig-x011-201606 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All error/warnings (new ones prefixed by >>):

mm/backing-dev.c: In function 'wb_congested_put':
>> mm/backing-dev.c:460:2: error: implicit declaration of function 'local_irq_save_nort' [-Werror=implicit-function-declaration]
local_irq_save_nort(flags);
^
>> mm/backing-dev.c:462:3: error: implicit declaration of function 'local_irq_restore_nort' [-Werror=implicit-function-declaration]
local_irq_restore_nort(flags);
^
>> mm/backing-dev.c:460:2: warning: 'flags' is used uninitialized in this function [-Wuninitialized]
local_irq_save_nort(flags);
^
cc1: some warnings being treated as errors

vim +/local_irq_save_nort +460 mm/backing-dev.c

454 * Put @congested and destroy it if the refcnt reaches zero.
455 */
456 void wb_congested_put(struct bdi_writeback_congested *congested)
457 {
458 unsigned long flags;
459
> 460 local_irq_save_nort(flags);
461 if (!atomic_dec_and_lock(&congested->refcnt, &cgwb_lock)) {
> 462 local_irq_restore_nort(flags);
463 return;
464 }
465

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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