From 2e0376aabc38f32620c2f52a7ac596ecd632f165 Mon Sep 17 00:00:00 2001 From: Douglas Gilbert Date: Tue, 13 Aug 2002 23:54:08 -0500 Subject: This version of sg for the lk 2.5 series re-adds direct IO support using work done by Kai Makisara (on st driver, posted 2002/7/29). Changelog: Changes since 3.5.26 (20020708) - re-add direct IO using Kai Makisara's work - re-tab to 8, start using C99-isms - simplify memory management Like Kai's patch, this one needs kernel/ksyms.c altered to export get_user_pages(). Kai's worker routines st_map_user_pages() and st_unmap_user_pages() are duplicated as is. Hopefully these routines will find a home in a library soon. The re-tabbing makes the patches rather large so here are 2 urls: This tarball contains sg.h and sg.c http://www.torque.net/sg/p/sg3527.tgz This gzipped patch is against lk 2.5.31 and touches kernel/ksyms.c as well http://www.torque.net/sg/p/sg_3527_lk2531.diff.gz Testing is ongoing, everything works apart from "zero copy" copy. That uses mmap-ed IO on the read side and direct IO on the write side. Not too many people would be using that I suspect. Doug Gilbert --- kernel/ksyms.c | 1 + 1 file changed, 1 insertion(+) (limited to 'kernel') diff --git a/kernel/ksyms.c b/kernel/ksyms.c index d0a08cc4ce6c..e46fee743ef5 100644 --- a/kernel/ksyms.c +++ b/kernel/ksyms.c @@ -126,6 +126,7 @@ EXPORT_SYMBOL(highmem_start_page); EXPORT_SYMBOL(kmap_prot); EXPORT_SYMBOL(kmap_pte); #endif +EXPORT_SYMBOL(get_user_pages); /* filesystem internal functions */ EXPORT_SYMBOL(def_blk_fops); -- cgit v1.2.3