Commit 783cb68e authored by Changbin Du's avatar Changbin Du Committed by Linus Torvalds

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.comSigned-off-by: default avatarChangbin Du <changbin.du@intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4675ff05
...@@ -36,9 +36,9 @@ static const struct address_space_operations swap_aops = { ...@@ -36,9 +36,9 @@ static const struct address_space_operations swap_aops = {
#endif #endif
}; };
struct address_space *swapper_spaces[MAX_SWAPFILES]; struct address_space *swapper_spaces[MAX_SWAPFILES] __read_mostly;
static unsigned int nr_swapper_spaces[MAX_SWAPFILES]; static unsigned int nr_swapper_spaces[MAX_SWAPFILES] __read_mostly;
bool swap_vma_readahead = true; bool swap_vma_readahead __read_mostly = true;
#define SWAP_RA_WIN_SHIFT (PAGE_SHIFT / 2) #define SWAP_RA_WIN_SHIFT (PAGE_SHIFT / 2)
#define SWAP_RA_HITS_MASK ((1UL << SWAP_RA_WIN_SHIFT) - 1) #define SWAP_RA_HITS_MASK ((1UL << SWAP_RA_WIN_SHIFT) - 1)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment