Remove VM_MAX_CACHE_HIT, MAX_RA_PAGES and MIN_RA_PAGES. Signed-off-by: Fengguang Wu --- include/linux/mm.h | 2 -- mm/readahead.c | 10 +--------- 2 files changed, 1 insertion(+), 11 deletions(-) --- linux-2.6.22-rc6-mm1.orig/include/linux/mm.h +++ linux-2.6.22-rc6-mm1/include/linux/mm.h @@ -1148,8 +1148,6 @@ int write_one_page(struct page *page, in /* readahead.c */ #define VM_MAX_READAHEAD 128 /* kbytes */ #define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */ -#define VM_MAX_CACHE_HIT 256 /* max pages in a row in cache before - * turning readahead off */ int do_page_cache_readahead(struct address_space *mapping, struct file *filp, pgoff_t offset, unsigned long nr_to_read); --- linux-2.6.22-rc6-mm1.orig/mm/readahead.c +++ linux-2.6.22-rc6-mm1/mm/readahead.c @@ -21,16 +21,8 @@ void default_unplug_io_fn(struct backing } EXPORT_SYMBOL(default_unplug_io_fn); -/* - * Convienent macros for min/max read-ahead pages. - * Note that MAX_RA_PAGES is rounded down, while MIN_RA_PAGES is rounded up. - * The latter is necessary for systems with large page size(i.e. 64k). - */ -#define MAX_RA_PAGES (VM_MAX_READAHEAD*1024 / PAGE_CACHE_SIZE) -#define MIN_RA_PAGES DIV_ROUND_UP(VM_MIN_READAHEAD*1024, PAGE_CACHE_SIZE) - struct backing_dev_info default_backing_dev_info = { - .ra_pages = MAX_RA_PAGES, + .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE, .state = 0, .capabilities = BDI_CAP_MAP_COPY, .unplug_io_fn = default_unplug_io_fn, -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/