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| author | Changbin Du <changbin.du@intel.com> | 2017-11-15 17:36:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 18:21:05 -0800 |
| commit | 783cb68ee2d25d621326366c0b615bf2ccf3b402 (patch) | |
| tree | 4868c340c671bd5b7518c53d0f414f2213e97a6b /mm/swap_state.c | |
| parent | 4675ff05de2d76d167336b368bd07f3fef6ed5a6 (diff) | |
| download | linux-783cb68ee2d25d621326366c0b615bf2ccf3b402.tar.gz linux-783cb68ee2d25d621326366c0b615bf2ccf3b402.tar.bz2 linux-783cb68ee2d25d621326366c0b615bf2ccf3b402.zip | |
mm/swap_state.c: declare a few variables as __read_mostly
These global variables are only set during initialization or rarely
change, so declare them as __read_mostly.
Link: http://lkml.kernel.org/r/1507802349-5554-1-git-send-email-changbin.du@intel.com
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap_state.c')
| -rw-r--r-- | mm/swap_state.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c index f2face8b889e..374d446f7a0a 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -36,9 +36,9 @@ static const struct address_space_operations swap_aops = { #endif }; -struct address_space *swapper_spaces[MAX_SWAPFILES]; -static unsigned int nr_swapper_spaces[MAX_SWAPFILES]; -bool swap_vma_readahead = true; +struct address_space *swapper_spaces[MAX_SWAPFILES] __read_mostly; +static unsigned int nr_swapper_spaces[MAX_SWAPFILES] __read_mostly; +bool swap_vma_readahead __read_mostly = true; #define SWAP_RA_WIN_SHIFT (PAGE_SHIFT / 2) #define SWAP_RA_HITS_MASK ((1UL << SWAP_RA_WIN_SHIFT) - 1) |