Hi "Matthew, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.14-rc1 next-20210712] [cannot apply to hnaz-linux-mm/master tip/perf/core linux/master] [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/Matthew-Wilcox-Oracle/Convert-memcg-to-folios/20210713-035650 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e73f0f0ee7541171d89f2e2491130c7771ba58d3 config: i386-randconfig-p002-20210712 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/01c63778e430697015122448ac6344d1dc2f10e4 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matthew-Wilcox-Oracle/Convert-memcg-to-folios/20210713-035650 git checkout 01c63778e430697015122448ac6344d1dc2f10e4 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): | ^~~~~~~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:420:55: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function '__folio_objcg': include/linux/memcontrol.h:422:34: error: dereferencing pointer to incomplete type 'struct folio' 422 | unsigned long memcg_data = folio->memcg_data; | ^~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:451:53: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_memcg': include/linux/memcontrol.h:453:23: error: passing argument 1 of 'folio_memcg_kmem' from incompatible pointer type [-Werror=incompatible-pointer-types] 453 | if (folio_memcg_kmem(folio)) | ^~~~~ | | | struct folio * include/linux/memcontrol.h:375:51: note: expected 'struct folio *' but argument is of type 'struct folio *' 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:454:41: error: passing argument 1 of '__folio_objcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 454 | return obj_cgroup_memcg(__folio_objcg(folio)); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:420:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:455:23: error: passing argument 1 of '__folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 455 | return __folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:399:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 399 | static inline struct mem_cgroup *__folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: In function 'page_memcg': include/linux/memcontrol.h:460:21: error: implicit declaration of function 'page_folio' [-Werror=implicit-function-declaration] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~ include/linux/memcontrol.h:460:21: warning: passing argument 1 of 'folio_memcg' makes pointer from integer without a cast [-Wint-conversion] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'int' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:540:44: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~ include/linux/memcontrol.h:540:20: error: conflicting types for 'folio_memcg_kmem' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~~~~~~~~~~~~ include/linux/memcontrol.h:375:20: note: previous declaration of 'folio_memcg_kmem' was here 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/atomic-instrumented.h:20, from include/linux/atomic.h:81, from include/linux/crypto.h:15, from arch/x86/kernel/asm-offsets.c:9: include/linux/memcontrol.h: In function 'folio_memcg_kmem': include/linux/memcontrol.h:542:35: error: dereferencing pointer to incomplete type 'struct folio' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~ include/linux/build_bug.h:30:63: note: in definition of macro 'BUILD_BUG_ON_INVALID' 30 | #define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) | ^ include/linux/memcontrol.h:542:2: note: in expansion of macro 'VM_BUG_ON_PGFLAGS' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~~~~~~~~~~~~~~~~ In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: include/linux/memcontrol.h: In function 'PageMemcgKmem': include/linux/memcontrol.h:606:26: warning: passing argument 1 of 'folio_memcg_kmem' makes pointer from integer without a cast [-Wint-conversion] 606 | return folio_memcg_kmem(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:540:51: note: expected 'struct folio *' but argument is of type 'int' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:707:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 707 | int mem_cgroup_charge(struct folio *, struct mm_struct *, gfp_t); | ^~~~~ include/linux/memcontrol.h:712:33: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 712 | void mem_cgroup_uncharge(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:715:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 715 | void mem_cgroup_migrate(struct folio *old, struct folio *new); | ^~~~~ include/linux/memcontrol.h:759:50: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 759 | static inline struct lruvec *folio_lruvec(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_lruvec': >> include/linux/memcontrol.h:761:41: error: passing argument 1 of 'folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 761 | struct mem_cgroup *memcg = folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'struct folio *' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ >> include/linux/memcontrol.h:763:2: error: implicit declaration of function 'VM_WARN_ON_ONCE_FOLIO'; did you mean 'VM_WARN_ON_ONCE_PAGE'? [-Werror=implicit-function-declaration] 763 | VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled(), folio); | ^~~~~~~~~~~~~~~~~~~~~ | VM_WARN_ON_ONCE_PAGE >> include/linux/memcontrol.h:764:34: error: implicit declaration of function 'folio_pgdat'; did you mean 'folio_nid'? [-Werror=implicit-function-declaration] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~ | folio_nid include/linux/memcontrol.h:764:34: warning: passing argument 2 of 'mem_cgroup_lruvec' makes pointer from integer without a cast [-Wint-conversion] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:727:33: note: expected 'struct pglist_data *' but argument is of type 'int' 727 | struct pglist_data *pgdat) | ~~~~~~~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:952:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 952 | void folio_memcg_lock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:953:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 953 | void folio_memcg_unlock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:375:20: warning: 'folio_memcg_kmem' used but never defined 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- | ^~~~~~~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:420:55: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function '__folio_objcg': include/linux/memcontrol.h:422:34: error: dereferencing pointer to incomplete type 'struct folio' 422 | unsigned long memcg_data = folio->memcg_data; | ^~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:451:53: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_memcg': include/linux/memcontrol.h:453:23: error: passing argument 1 of 'folio_memcg_kmem' from incompatible pointer type [-Werror=incompatible-pointer-types] 453 | if (folio_memcg_kmem(folio)) | ^~~~~ | | | struct folio * include/linux/memcontrol.h:375:51: note: expected 'struct folio *' but argument is of type 'struct folio *' 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:454:41: error: passing argument 1 of '__folio_objcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 454 | return obj_cgroup_memcg(__folio_objcg(folio)); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:420:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:455:23: error: passing argument 1 of '__folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 455 | return __folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:399:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 399 | static inline struct mem_cgroup *__folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: In function 'page_memcg': include/linux/memcontrol.h:460:21: error: implicit declaration of function 'page_folio' [-Werror=implicit-function-declaration] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~ include/linux/memcontrol.h:460:21: warning: passing argument 1 of 'folio_memcg' makes pointer from integer without a cast [-Wint-conversion] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'int' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:540:44: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~ include/linux/memcontrol.h:540:20: error: conflicting types for 'folio_memcg_kmem' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~~~~~~~~~~~~ include/linux/memcontrol.h:375:20: note: previous declaration of 'folio_memcg_kmem' was here 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/atomic-instrumented.h:20, from include/linux/atomic.h:81, from include/linux/crypto.h:15, from arch/x86/kernel/asm-offsets.c:9: include/linux/memcontrol.h: In function 'folio_memcg_kmem': include/linux/memcontrol.h:542:35: error: dereferencing pointer to incomplete type 'struct folio' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~ include/linux/build_bug.h:30:63: note: in definition of macro 'BUILD_BUG_ON_INVALID' 30 | #define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) | ^ include/linux/memcontrol.h:542:2: note: in expansion of macro 'VM_BUG_ON_PGFLAGS' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~~~~~~~~~~~~~~~~ In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: include/linux/memcontrol.h: In function 'PageMemcgKmem': include/linux/memcontrol.h:606:26: warning: passing argument 1 of 'folio_memcg_kmem' makes pointer from integer without a cast [-Wint-conversion] 606 | return folio_memcg_kmem(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:540:51: note: expected 'struct folio *' but argument is of type 'int' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:707:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 707 | int mem_cgroup_charge(struct folio *, struct mm_struct *, gfp_t); | ^~~~~ include/linux/memcontrol.h:712:33: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 712 | void mem_cgroup_uncharge(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:715:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 715 | void mem_cgroup_migrate(struct folio *old, struct folio *new); | ^~~~~ include/linux/memcontrol.h:759:50: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 759 | static inline struct lruvec *folio_lruvec(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_lruvec': >> include/linux/memcontrol.h:761:41: error: passing argument 1 of 'folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 761 | struct mem_cgroup *memcg = folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'struct folio *' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ >> include/linux/memcontrol.h:763:2: error: implicit declaration of function 'VM_WARN_ON_ONCE_FOLIO'; did you mean 'VM_WARN_ON_ONCE_PAGE'? [-Werror=implicit-function-declaration] 763 | VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled(), folio); | ^~~~~~~~~~~~~~~~~~~~~ | VM_WARN_ON_ONCE_PAGE >> include/linux/memcontrol.h:764:34: error: implicit declaration of function 'folio_pgdat'; did you mean 'folio_nid'? [-Werror=implicit-function-declaration] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~ | folio_nid include/linux/memcontrol.h:764:34: warning: passing argument 2 of 'mem_cgroup_lruvec' makes pointer from integer without a cast [-Wint-conversion] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:727:33: note: expected 'struct pglist_data *' but argument is of type 'int' 727 | struct pglist_data *pgdat) | ~~~~~~~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:952:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 952 | void folio_memcg_lock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:953:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 953 | void folio_memcg_unlock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:375:20: warning: 'folio_memcg_kmem' used but never defined 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors 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:1212: prepare0] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:220: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- | ^~~~~~~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:420:55: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function '__folio_objcg': include/linux/memcontrol.h:422:34: error: dereferencing pointer to incomplete type 'struct folio' 422 | unsigned long memcg_data = folio->memcg_data; | ^~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:451:53: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_memcg': include/linux/memcontrol.h:453:23: error: passing argument 1 of 'folio_memcg_kmem' from incompatible pointer type [-Werror=incompatible-pointer-types] 453 | if (folio_memcg_kmem(folio)) | ^~~~~ | | | struct folio * include/linux/memcontrol.h:375:51: note: expected 'struct folio *' but argument is of type 'struct folio *' 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:454:41: error: passing argument 1 of '__folio_objcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 454 | return obj_cgroup_memcg(__folio_objcg(folio)); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:420:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 420 | static inline struct obj_cgroup *__folio_objcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h:455:23: error: passing argument 1 of '__folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 455 | return __folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:399:62: note: expected 'struct folio *' but argument is of type 'struct folio *' 399 | static inline struct mem_cgroup *__folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: In function 'page_memcg': include/linux/memcontrol.h:460:21: error: implicit declaration of function 'page_folio' [-Werror=implicit-function-declaration] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~ include/linux/memcontrol.h:460:21: warning: passing argument 1 of 'folio_memcg' makes pointer from integer without a cast [-Wint-conversion] 460 | return folio_memcg(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'int' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:540:44: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~ include/linux/memcontrol.h:540:20: error: conflicting types for 'folio_memcg_kmem' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ^~~~~~~~~~~~~~~~ include/linux/memcontrol.h:375:20: note: previous declaration of 'folio_memcg_kmem' was here 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ In file included from include/asm-generic/atomic-instrumented.h:20, from include/linux/atomic.h:81, from include/linux/crypto.h:15, from arch/x86/kernel/asm-offsets.c:9: include/linux/memcontrol.h: In function 'folio_memcg_kmem': include/linux/memcontrol.h:542:35: error: dereferencing pointer to incomplete type 'struct folio' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~ include/linux/build_bug.h:30:63: note: in definition of macro 'BUILD_BUG_ON_INVALID' 30 | #define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) | ^ include/linux/memcontrol.h:542:2: note: in expansion of macro 'VM_BUG_ON_PGFLAGS' 542 | VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page); | ^~~~~~~~~~~~~~~~~ In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: include/linux/memcontrol.h: In function 'PageMemcgKmem': include/linux/memcontrol.h:606:26: warning: passing argument 1 of 'folio_memcg_kmem' makes pointer from integer without a cast [-Wint-conversion] 606 | return folio_memcg_kmem(page_folio(page)); | ^~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:540:51: note: expected 'struct folio *' but argument is of type 'int' 540 | static inline bool folio_memcg_kmem(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:707:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 707 | int mem_cgroup_charge(struct folio *, struct mm_struct *, gfp_t); | ^~~~~ include/linux/memcontrol.h:712:33: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 712 | void mem_cgroup_uncharge(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:715:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 715 | void mem_cgroup_migrate(struct folio *old, struct folio *new); | ^~~~~ include/linux/memcontrol.h:759:50: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 759 | static inline struct lruvec *folio_lruvec(struct folio *folio) | ^~~~~ include/linux/memcontrol.h: In function 'folio_lruvec': >> include/linux/memcontrol.h:761:41: error: passing argument 1 of 'folio_memcg' from incompatible pointer type [-Werror=incompatible-pointer-types] 761 | struct mem_cgroup *memcg = folio_memcg(folio); | ^~~~~ | | | struct folio * include/linux/memcontrol.h:451:60: note: expected 'struct folio *' but argument is of type 'struct folio *' 451 | static inline struct mem_cgroup *folio_memcg(struct folio *folio) | ~~~~~~~~~~~~~~^~~~~ >> include/linux/memcontrol.h:763:2: error: implicit declaration of function 'VM_WARN_ON_ONCE_FOLIO'; did you mean 'VM_WARN_ON_ONCE_PAGE'? [-Werror=implicit-function-declaration] 763 | VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled(), folio); | ^~~~~~~~~~~~~~~~~~~~~ | VM_WARN_ON_ONCE_PAGE >> include/linux/memcontrol.h:764:34: error: implicit declaration of function 'folio_pgdat'; did you mean 'folio_nid'? [-Werror=implicit-function-declaration] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~ | folio_nid include/linux/memcontrol.h:764:34: warning: passing argument 2 of 'mem_cgroup_lruvec' makes pointer from integer without a cast [-Wint-conversion] 764 | return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); | ^~~~~~~~~~~~~~~~~~ | | | int include/linux/memcontrol.h:727:33: note: expected 'struct pglist_data *' but argument is of type 'int' 727 | struct pglist_data *pgdat) | ~~~~~~~~~~~~~~~~~~~~^~~~~ include/linux/memcontrol.h: At top level: include/linux/memcontrol.h:952:30: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 952 | void folio_memcg_lock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:953:32: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration 953 | void folio_memcg_unlock(struct folio *folio); | ^~~~~ include/linux/memcontrol.h:375:20: warning: 'folio_memcg_kmem' used but never defined 375 | static inline bool folio_memcg_kmem(struct folio *folio); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors 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:1212: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:220: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/folio_memcg +761 include/linux/memcontrol.h 752 753 /** 754 * folio_lruvec - return lruvec for isolating/putting an LRU folio 755 * @folio: Pointer to the folio. 756 * 757 * This function relies on folio->mem_cgroup being stable. 758 */ 759 static inline struct lruvec *folio_lruvec(struct folio *folio) 760 { > 761 struct mem_cgroup *memcg = folio_memcg(folio); 762 > 763 VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled(), folio); > 764 return mem_cgroup_lruvec(memcg, folio_pgdat(folio)); 765 } 766 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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