From: Hans Reiser Reiser4 implements read without help of generic_file_read, but it uses page_cache_readahead. So, this patch makes page_cache_readahead EXPROT_SYMBOL. Future filesystems may find this patch useful as well. Signed-off-by: Andrew Morton --- 25-akpm/mm/readahead.c | 1 + 1 files changed, 1 insertion(+) diff -puN mm/readahead.c~reiser4-export-page_cache_readahead mm/readahead.c --- 25/mm/readahead.c~reiser4-export-page_cache_readahead Wed Nov 10 14:45:14 2004 +++ 25-akpm/mm/readahead.c Wed Nov 10 14:45:14 2004 @@ -516,6 +516,7 @@ do_io: out: return; } +EXPORT_SYMBOL(page_cache_readahead); /* _