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 --- mm/readahead.c | 2 ++ 1 files changed, 2 insertions(+) diff -puN mm/readahead.c~reiser4-export-page_cache_readahead mm/readahead.c --- devel/mm/readahead.c~reiser4-export-page_cache_readahead 2005-08-06 15:35:09.000000000 -0700 +++ devel-akpm/mm/readahead.c 2005-08-06 15:35:09.000000000 -0700 @@ -526,6 +526,7 @@ page_cache_readahead(struct address_spac out: return ra->prev_page + 1; } +EXPORT_SYMBOL(page_cache_readahead); /* * handle_ra_miss() is called when it is known that a page which should have @@ -543,6 +544,7 @@ void handle_ra_miss(struct address_space ra->flags &= ~RA_FLAG_INCACHE; ra->cache_hit = 0; } +EXPORT_SYMBOL(handle_ra_miss); /* * Given a desired number of PAGE_CACHE_SIZE readahead pages, return a _