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mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static

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The bool enable_vma_readahead and swap_vma_readahead() are local to the
source and do not need to be in global scope, so make them static.

Cleans up sparse warnings:

  mm/swap_state.c:41:6: warning: symbol 'enable_vma_readahead' was not declared. Should it be static?
  mm/swap_state.c:742:13: warning: symbol 'swap_vma_readahead' was not declared. Should it be static?

Link: http://lkml.kernel.org/r/20180223164852.5159-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Colin Ian King 2018-04-05 16:25:05 -07:00 committed by Linus Torvalds
parent 3172485f4f
commit f5c754d63d
1 changed files with 3 additions and 3 deletions
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6
mm/swap_state.c
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@ -38,7 +38,7 @@ static const struct address_space_operations swap_aops = {
struct address_space *swapper_spaces[MAX_SWAPFILES] __read_mostly; struct address_space *swapper_spaces[MAX_SWAPFILES] __read_mostly;
static unsigned int nr_swapper_spaces[MAX_SWAPFILES] __read_mostly; static unsigned int nr_swapper_spaces[MAX_SWAPFILES] __read_mostly;
bool enable_vma_readahead __read_mostly = true; static bool enable_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)
@ -733,8 +733,8 @@ static void swap_ra_info(struct vm_fault *vmf,
pte_unmap(orig_pte); pte_unmap(orig_pte);
} }
struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask, static struct page *swap_vma_readahead(swp_entry_t fentry, gfp_t gfp_mask,
struct vm_fault *vmf) struct vm_fault *vmf)
{ {
struct blk_plug plug; struct blk_plug plug;
struct vm_area_struct *vma = vmf->vma; struct vm_area_struct *vma = vmf->vma;