The patch titled
readahead: no RA_FLAG_EOF on single page file
has been removed from the -mm tree. Its filename is
readahead-state-based-method-routines-no-ra_flag_eof-on-single-page-file.patch
This patch was dropped because it was folded into readahead-state-based-method-routines.patch
------------------------------------------------------
Subject: readahead: no RA_FLAG_EOF on single page file
From: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
Dot not set RA_FLAG_EOF on single page files.
readahead_close() will be called if RA_FLAG_EOF is there on file close. It
detects readahead hit/miss, and adjust ra_expected_bytes correspondingly.
Single page files are uninteresting for it. Since near 40% desktop files are
<= 4k, this patch can reduce many useless readahead_close() invocations.
Signed-off-by: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/readahead.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/readahead.c~readahead-state-based-method-routines-no-ra_flag_eof-on-single-page-file mm/readahead.c
--- devel/mm/readahead.c~readahead-state-based-method-routines-no-ra_flag_eof-on-single-page-file 2006-06-09 01:22:42.000000000 -0700
+++ devel-akpm/mm/readahead.c 2006-06-09 01:22:42.000000000 -0700
@@ -966,7 +966,8 @@ static int ra_dispatch(struct file_ra_st
ra->readahead_index = eof_index;
if (ra->lookahead_index > eof_index)
ra->lookahead_index = eof_index;
- ra->flags |= RA_FLAG_EOF;
+ if (eof_index > 1)
+ ra->flags |= RA_FLAG_EOF;
}
/* Disable look-ahead for loopback file. */
_
Patches currently in -mm which might be from wfg@xxxxxxxxxxxxxxxx are
origin.patch
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-routines-no-ra_flag_eof-on-single-page-file.patch
readahead-state-based-method.patch
readahead-state-based-method-readahead-state-based-method-stand-alone-size-limit-code.patch
readahead-state-based-method-aging-accounting-readahead-kconfig-option-readahead_smooth_aging.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-context-based-method-slow-start.patch
readahead-initial-method-guiding-sizes.patch
readahead-initial-method-guiding-sizes-aggressive-initial-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-backward-prefetching-method-add-use-case-comment.patch
readahead-seeking-reads-method.patch
readahead-thrashing-recovery-method.patch
readahead-call-scheme.patch
readahead-call-scheme-fix-fastcall.patch
readahead-call-scheme-no-fastcall-for-readahead_cache_hit.patch
readahead-call-scheme-no-fastcall-for-readahead_cache_hit-kconfig-option-readahead_hit_feedback.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-remove-size-limit-on-read_ahead_kb.patch
readahead-backward-prefetching-method-fix.patch
readahead-remove-the-size-limit-of-max_sectors_kb-on-read_ahead_kb.patch
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