This patch might be useful for filesystems which implement read without help of generic_file_read. It EXPORT_SYMBOL-s page_cache_readahead and handle_ra_miss. Signed-off-by: Andrew Morton --- diff -puN mm/readahead.c~reiser4-export-page_cache_readahead mm/readahead.c mm/readahead.c | 2 ++ 1 files changed, 2 insertions(+) diff -puN mm/readahead.c~reiser4-export-page_cache_readahead mm/readahead.c --- linux-2.6.12-rc5-mm2/mm/readahead.c~reiser4-export-page_cache_readahead 2005-06-03 15:12:33.611538554 +0400 +++ linux-2.6.12-rc5-mm2-vs/mm/readahead.c 2005-06-03 15:13:45.040081677 +0400 @@ -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 @@ -542,6 +543,7 @@ void handle_ra_miss(struct address_space ra->flags |= RA_FLAG_MISS; ra->flags &= ~RA_FLAG_INCACHE; } +EXPORT_SYMBOL(handle_ra_miss); /* * Given a desired number of PAGE_CACHE_SIZE readahead pages, return a _