[PATCH] revert to static = {0}

From: Hugh Dickins (hugh@veritas.com)
Date: Tue Aug 05 2003 - 10:48:02 EST


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 &&
             ((loff_t) index << PAGE_CACHE_SHIFT) >= i_size_read(inode))

-
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