On Mon 09-04-18 12:55:42, Arnd Bergmann wrote: > 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. > > Cc: Martin Brandenburg <[email protected]> > Cc: Mike Marshall <[email protected]> > Fixes: a5135eeab2e5 ("orangefs: implement vm_ops->fault") > Signed-off-by: Arnd Bergmann <[email protected]>
OK, makes sense. You can add: Reviewed-by: Jan Kara <[email protected]> Honza > --- > mm/filemap.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/mm/filemap.c b/mm/filemap.c > index ab77e19ab09c..9276bdb2343c 100644 > --- a/mm/filemap.c > +++ b/mm/filemap.c > @@ -2719,7 +2719,6 @@ int filemap_page_mkwrite(struct vm_fault *vmf) > 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 file *file, > struct vm_area_struct *vma) > 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 file * file, > struct vm_area_struct * vma) > } > #endif /* CONFIG_MMU */ > > +EXPORT_SYMBOL(filemap_page_mkwrite); > EXPORT_SYMBOL(generic_file_mmap); > EXPORT_SYMBOL(generic_file_readonly_mmap); > > -- > 2.9.0 > -- Jan Kara <[email protected]> SUSE Labs, CR
