在 2020/11/10 上午11:09, Souptick Joarder 写道: > On Fri, Nov 6, 2020 at 4:55 PM Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> wrote: >> >> Otherwise it cause gcc warning: >> ^~~~~~~~~~~~~~~ >> ../mm/filemap.c:830:14: warning: no previous prototype for >> ‘__add_to_page_cache_locked’ [-Wmissing-prototypes] >> noinline int __add_to_page_cache_locked(struct page *page, >> ^~~~~~~~~~~~~~~~~~~~~~~~~~ > > Is CONFIG_DEBUG_INFO_BTF enabled in your .config ? Sorry, I tried to buld the configure with bzImage, but failed on pahole version too low, and compiled pahole still can not run in git://git.kernel.org/pub/scm/devel/pahole/pahole.git #pahole pahole: symbol lookup error: pahole: undefined symbol: tabs > >> >> Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> >> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> >> Cc: linux-mm@xxxxxxxxx >> Cc: linux-kernel@xxxxxxxxxxxxxxx >> --- >> mm/filemap.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/mm/filemap.c b/mm/filemap.c >> index d90614f501da..249cf489f5df 100644 >> --- a/mm/filemap.c >> +++ b/mm/filemap.c >> @@ -827,7 +827,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask) >> } >> EXPORT_SYMBOL_GPL(replace_page_cache_page); >> >> -noinline int __add_to_page_cache_locked(struct page *page, >> +static noinline int __add_to_page_cache_locked(struct page *page, >> struct address_space *mapping, >> pgoff_t offset, gfp_t gfp, >> void **shadowp) >> -- >> 1.8.3.1 >> >>
