From: Arnd Bergmann <arnd@xxxxxxxx> Subject: mm/filemap.c: provide dummy filemap_page_mkwrite() for NOMMU Building orangefs on MMU-less machines now results in a link error because of the newly introduced use of the filemap_page_mkwrite() function: ERROR: "filemap_page_mkwrite" [fs/orangefs/orangefs.ko] undefined! This adds a dummy version for it, similar to the existing generic_file_mmap and generic_file_readonly_mmap stubs in the same file, to avoid the link error without adding #ifdefs in each file system that uses these. Link: http://lkml.kernel.org/r/20180409105555.2439976-1-arnd@xxxxxxxx Fixes: a5135eeab2e5 ("orangefs: implement vm_ops->fault") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Reviewed-by: Jan Kara <jack@xxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Martin Brandenburg <martin@xxxxxxxxxxxx> Cc: Mike Marshall <hubcap@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/filemap.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff -puN mm/filemap.c~mm-filemap-provide-dummy-filemap_page_mkwrite-for-nommu mm/filemap.c --- a/mm/filemap.c~mm-filemap-provide-dummy-filemap_page_mkwrite-for-nommu +++ a/mm/filemap.c @@ -2719,7 +2719,6 @@ out: sb_end_pagefault(inode->i_sb); return ret; } -EXPORT_SYMBOL(filemap_page_mkwrite); const struct vm_operations_struct generic_file_vm_ops = { .fault = filemap_fault, @@ -2750,6 +2749,10 @@ int generic_file_readonly_mmap(struct fi return generic_file_mmap(file, vma); } #else +int filemap_page_mkwrite(struct vm_fault *vmf) +{ + return -ENOSYS; +} int generic_file_mmap(struct file * file, struct vm_area_struct * vma) { return -ENOSYS; @@ -2760,6 +2763,7 @@ int generic_file_readonly_mmap(struct fi } #endif /* CONFIG_MMU */ +EXPORT_SYMBOL(filemap_page_mkwrite); EXPORT_SYMBOL(generic_file_mmap); EXPORT_SYMBOL(generic_file_readonly_mmap); _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
