[PATCH] revert to static = {0}

Hugh Dickins
2003-08-05T15:46:31Z

Please revert to static zero initialization of a const: when thus
initialized it's linked into a readonly cacheline shared between cpus;
otherwise it's linked into bss, likely to be in a dirty cacheline
bouncing between cpus.

--- 2.6.0-test2-bk/mm/shmem.c Tue Aug 5 15:57:31 2003
+++ linux/mm/shmem.c Tue Aug 5 16:16:55 2003
@@ -296,7 +296,7 @@
struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
struct page *page = NULL;
swp_entry_t *entry;
- static const swp_entry_t unswapped;
+ static const swp_entry_t unswapped = {0};

if (sgp != SGP_WRITE &&