The patch titled
readahead: rename state_based_readahead() to clock_based_readahead()
has been added to the -mm tree. Its filename is
readahead-rename-state_based_readahead-to-clock_based_readahead.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: readahead: rename state_based_readahead() to clock_based_readahead()
From: Fengguang Wu <wfg@xxxxxxxxxxxxxxxx>
Rename state_based_readahead() to clock_based_readahead(). It better reflects
the property of that readahead method.
Signed-off-by: Fengguang Wu <wfg@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/readahead.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff -puN mm/readahead.c~readahead-rename-state_based_readahead-to-clock_based_readahead mm/readahead.c
--- a/mm/readahead.c~readahead-rename-state_based_readahead-to-clock_based_readahead
+++ a/mm/readahead.c
@@ -66,7 +66,7 @@ int readahead_hit_rate = 1;
enum ra_class {
RA_CLASS_ALL,
RA_CLASS_INITIAL,
- RA_CLASS_STATE,
+ RA_CLASS_CLOCK,
RA_CLASS_CONTEXT,
RA_CLASS_CONTEXT_AGGRESSIVE,
RA_CLASS_BACKWARD,
@@ -101,7 +101,7 @@ enum ra_event {
#ifdef CONFIG_DEBUG_READAHEAD
static u32 readahead_debug_level = 1;
-static u32 disable_stateful_method;
+static u32 disable_clock_readahead;
static const char * const ra_class_name[];
static void ra_account(struct file_ra_state *ra, enum ra_event e, int pages);
# define debug_inc(var) do { var++; } while (0)
@@ -1115,7 +1115,7 @@ static unsigned long compute_thrashing_t
* Main function for file_ra_state based read-ahead.
*/
static unsigned long
-state_based_readahead(struct address_space *mapping, struct file *filp,
+clock_based_readahead(struct address_space *mapping, struct file *filp,
struct file_ra_state *ra,
struct page *page, pgoff_t offset,
unsigned long req_size, unsigned long ra_max)
@@ -1157,7 +1157,7 @@ state_based_readahead(struct address_spa
if (page && ra_old + ra_old / 8 >= ra_size)
update_ra_thrash_bytes(mapping->backing_dev_info, ra_size);
- ra_set_class(ra, RA_CLASS_STATE);
+ ra_set_class(ra, RA_CLASS_CLOCK);
ra_set_index(ra, offset, ra->readahead_index);
ra_set_size(ra, ra_size, la_size);
@@ -1687,8 +1687,8 @@ page_cache_readahead_adaptive(struct add
*/
if (offset == ra->prev_page + 1 &&
offset == ra->lookahead_index &&
- !debug_option(disable_stateful_method))
- return state_based_readahead(mapping, filp, ra, page,
+ !debug_option(disable_clock_readahead))
+ return clock_based_readahead(mapping, filp, ra, page,
offset, req_size, ra_max);
/*
@@ -1788,7 +1788,7 @@ void readahead_cache_hit(struct file_ra_
static const char * const ra_class_name[] = {
"total",
"initial",
- "state",
+ "clock",
"context",
"contexta",
"backward",
@@ -1970,8 +1970,8 @@ static int __init readahead_init(void)
debugfs_create_file("events", 0644, root, NULL, &ra_events_fops);
debugfs_create_u32("debug_level", 0644, root, &readahead_debug_level);
- debugfs_create_bool("disable_stateful_method", 0644, root,
- &disable_stateful_method);
+ debugfs_create_bool("disable_clock_readahead", 0644, root,
+ &disable_clock_readahead);
return 0;
}
_
Patches currently in -mm which might be from wfg@xxxxxxxxxxxxxxxx are
readahead-kconfig-options.patch
radixtree-introduce-scan-hole-data-functions.patch
mm-introduce-probe_page.patch
mm-introduce-pg_readahead.patch
readahead-add-look-ahead-support-to-__do_page_cache_readahead.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-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-check-node-id.patch
readahead-state-based-method-decouple-readahead_ratio-from-growth_limit.patch
readahead-state-based-method-cancel-lookahead-gracefully.patch
readahead-context-based-method.patch
readahead-initial-method-guiding-sizes.patch
readahead-initial-method-thrashing-guard-size.patch
readahead-initial-method-user-recommended-size.patch
readahead-initial-method.patch
readahead-backward-prefetching-method.patch
readahead-thrashing-recovery-method.patch
readahead-thrashing-recovery-method-check-unbalanced-aging.patch
readahead-thrashing-recovery-method-refill-holes.patch
readahead-call-scheme.patch
readahead-call-scheme-cleanup.patch
readahead-call-scheme-catch-thrashing-on-lookahead-time.patch
readahead-laptop-mode.patch
readahead-loop-case.patch
readahead-nfsd-case.patch
readahead-remove-parameter-ra_max-from-thrashing_recovery_readahead.patch
readahead-remove-parameter-ra_max-from-adjust_rala.patch
readahead-state-based-method-protect-against-tiny-size.patch
readahead-rename-state_based_readahead-to-clock_based_readahead.patch
readahead-account-i-o-block-times-for-stock-readahead.patch
readahead-rescue_pages-updates.patch
readahead-remove-noaction-shrink-events.patch
readahead-remove-size-limit-on-read_ahead_kb.patch
readahead-remove-size-limit-of-max_sectors_kb-on-read_ahead_kb.patch
readahead-partial-sendfile-fix.patch
readahead-turn-on-by-default.patch
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