The patch titled
readahead: context based method - fix *remain counting
has been added to the -mm tree. Its filename is
readahead-context-based-method-fix-remain-counting.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: readahead: context based method - fix *remain counting
From: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
*remain in query_page_cache_segment() is over counted by 1, fix it.
Signed-off-by: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/readahead.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/readahead.c~readahead-context-based-method-fix-remain-counting mm/readahead.c
--- devel/mm/readahead.c~readahead-context-based-method-fix-remain-counting 2006-05-30 14:20:13.000000000 -0700
+++ devel-akpm/mm/readahead.c 2006-05-30 14:20:13.000000000 -0700
@@ -1334,7 +1334,7 @@ static unsigned long query_page_cache_se
index = radix_tree_scan_hole_backward(&mapping->page_tree,
offset - 1, ra_max);
- *remain = offset - index;
+ *remain = (offset - 1) - index;
if (offset == ra->readahead_index && ra_cache_hit_ok(ra))
count = *remain;
_
Patches currently in -mm which might be from wfg@xxxxxxxxxxxxxxxx are
readahead-kconfig-options.patch
radixtree-introduce-radix_tree_scan_hole.patch
mm-introduce-probe_page.patch
mm-introduce-pg_readahead.patch
readahead-add-look-ahead-support-to-__do_page_cache_readahead.patch
readahead-delay-page-release-in-do_generic_mapping_read.patch
readahead-insert-cond_resched-calls.patch
readahead-minmax_ra_pages.patch
readahead-events-accounting.patch
readahead-rescue_pages.patch
readahead-sysctl-parameters.patch
readahead-sysctl-parameters-fix.patch
readahead-min-max-sizes.patch
readahead-state-based-method-aging-accounting.patch
readahead-state-based-method-routines.patch
readahead-state-based-method.patch
readahead-state-based-method-readahead-state-based-method-stand-alone-size-limit-code.patch
readahead-context-based-method.patch
readahead-context-based-method-apply-stream_shift-size-limits-to-contexta-method.patch
readahead-context-based-method-fix-remain-counting.patch
readahead-initial-method-guiding-sizes.patch
readahead-initial-method-thrashing-guard-size.patch
readahead-initial-method-expected-read-size.patch
readahead-initial-method-user-recommended-size.patch
readahead-initial-method.patch
readahead-backward-prefetching-method.patch
readahead-seeking-reads-method.patch
readahead-thrashing-recovery-method.patch
readahead-call-scheme.patch
readahead-laptop-mode.patch
readahead-loop-case.patch
readahead-nfsd-case.patch
readahead-turn-on-by-default.patch
readahead-debug-radix-tree-new-functions.patch
readahead-debug-traces-showing-accessed-file-names.patch
readahead-debug-traces-showing-read-patterns.patch
readahead-backward-prefetching-method-add-use-case-comment.patch
-
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