Messages in this thread Patch in this message | | | Date | Tue, 30 May 2006 16:40:34 +0800 | From | Wu Fengguang <> | Subject | [patch 4/4] readahead: backward prefetching method - add use case comment |
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Backward prefetching is vital to structural analysis and some other scientific applications. Comment this use case.
Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn> ---
--- linux-2.6.17-rc4-mm3.orig/mm/readahead.c +++ linux-2.6.17-rc4-mm3/mm/readahead.c @@ -1540,6 +1540,8 @@ initial_readahead(struct address_space * * Backward prefetching. * * No look-ahead and thrashing safety guard: should be unnecessary. + * + * Important for certain scientific arenas(i.e. structural analysis). */ static int try_read_backward(struct file_ra_state *ra, pgoff_t begin_index, -- - 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/
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