Hi Shakeel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20210222]
[cannot apply to linus/master hnaz-linux-mm/master v5.11 v5.11-rc7 v5.11-rc6 v5.11]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Shakeel-Butt/memcg-charge-before-adding-to-swapcache-on-swapin/20210223-135711
base:    37dfbfbdca66834bc0f64ec9b35e09ac6c8898da
config: x86_64-randconfig-m031-20210223 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/7ad6fb47580886394809b563b7476954a35f3054
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Shakeel-Butt/memcg-charge-before-adding-to-swapcache-on-swapin/20210223-135711
        git checkout 7ad6fb47580886394809b563b7476954a35f3054
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

   In file included from include/linux/swap.h:9,
                    from include/linux/suspend.h:5,
                    from arch/x86/kernel/asm-offsets.c:13:

quoted

include/linux/memcontrol.h:1149:1: error: expected identifier or '(' before '{' token

    1149 | {
         | ^
   include/linux/memcontrol.h:1147:19: warning: 'mem_cgroup_charge_swapin_page' declared 'static' but never defined [-Wunused-function]
    1147 | static inline int mem_cgroup_charge_swapin_page(struct page *page,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
   In file included from include/linux/swap.h:9,
                    from include/linux/suspend.h:5,
                    from arch/x86/kernel/asm-offsets.c:13:

quoted

include/linux/memcontrol.h:1149:1: error: expected identifier or '(' before '{' token

    1149 | {
         | ^
   include/linux/memcontrol.h:1147:19: warning: 'mem_cgroup_charge_swapin_page' declared 'static' but never defined [-Wunused-function]
    1147 | static inline int mem_cgroup_charge_swapin_page(struct page *page,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   make[2]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1228: prepare0] Error 2
   make[1]: Target 'modules_prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'modules_prepare' not remade because of errors.
--
   In file included from include/linux/swap.h:9,
                    from include/linux/suspend.h:5,
                    from arch/x86/kernel/asm-offsets.c:13:

quoted

include/linux/memcontrol.h:1149:1: error: expected identifier or '(' before '{' token

    1149 | {
         | ^
   include/linux/memcontrol.h:1147:19: warning: 'mem_cgroup_charge_swapin_page' declared 'static' but never defined [-Wunused-function]
    1147 | static inline int mem_cgroup_charge_swapin_page(struct page *page,
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   make[2]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1228: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +1149 include/linux/memcontrol.h

  1146	
  1147	static inline int mem_cgroup_charge_swapin_page(struct page *page,
  1148				struct mm_struct *mm, gfp_t gfp, swp_entry_t entry);

1149	{

  1150		return 0;
  1151	}
  1152	

---
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