The patch titled
readahead: remove size limit on read_ahead_kb
has been added to the -mm tree. Its filename is
readahead-remove-size-limit-on-read_ahead_kb.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: remove size limit on read_ahead_kb
From: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
Make possible large readahead values harmless. The stock readahead is
protected by always consulting the avaiable memory before applying this
number. Other readahead paths have already did so.
Signed-off-by: Wu Fengguang <wfg@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/readahead.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/readahead.c~readahead-remove-size-limit-on-read_ahead_kb mm/readahead.c
--- a/mm/readahead.c~readahead-remove-size-limit-on-read_ahead_kb
+++ a/mm/readahead.c
@@ -142,7 +142,7 @@ EXPORT_SYMBOL_GPL(file_ra_state_init);
*/
static inline unsigned long get_max_readahead(struct file_ra_state *ra)
{
- return ra->ra_pages;
+ return max_sane_readahead(ra->ra_pages);
}
static inline unsigned long get_min_readahead(struct file_ra_state *ra)
_
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-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-call-scheme.patch
readahead-laptop-mode.patch
readahead-loop-case.patch
readahead-nfsd-case.patch
readahead-turn-on-by-default.patch
readahead-remove-size-limit-on-read_ahead_kb.patch
readahead-remove-size-limit-of-max_sectors_kb-on-read_ahead_kb.patch
-
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