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| author | Han Pingtian <hanpt@linux.vnet.ibm.com> | 2014-01-23 15:53:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:36:52 -0800 |
| commit | 42aa83cb6757800f4e2b499f5db3127761517a6a (patch) | |
| tree | e946c566be52d21de5e9254674acc341c39fa475 /mm/internal.h | |
| parent | ac13c4622bda2a9ff8f57bbbfeff48b2a42d0963 (diff) | |
| download | lwn-42aa83cb6757800f4e2b499f5db3127761517a6a.tar.gz lwn-42aa83cb6757800f4e2b499f5db3127761517a6a.zip | |
mm: show message when updating min_free_kbytes in thp
min_free_kbytes may be raised during THP's initialization. Sometimes,
this will change the value which was set by the user. Showing this
message will clarify this confusion.
Only show this message when changing a value which was set by the user
according to Michal Hocko's suggestion.
Show the old value of min_free_kbytes according to Dave Hansen's
suggestion. This will give user the chance to restore old value of
min_free_kbytes.
Signed-off-by: Han Pingtian <hanpt@linux.vnet.ibm.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/internal.h b/mm/internal.h index dc95e979ae56..7e145e8cd1e6 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -99,6 +99,7 @@ extern void prep_compound_page(struct page *page, unsigned long order); #ifdef CONFIG_MEMORY_FAILURE extern bool is_free_buddy_page(struct page *page); #endif +extern int user_min_free_kbytes; #if defined CONFIG_COMPACTION || defined CONFIG_CMA |