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[PATCH] add poison.h and patch primary users

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Localize poison values into one header file for better documentation and
easier/quicker debugging and so that the same values won't be used for
multiple purposes.

Use these constants in core arch., mm, driver, and fs code.

Signed-off-by: Randy Dunlap <[email protected]>
Acked-by: Matt Mackall <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Andi Kleen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Randy Dunlap 2006-06-27 02:53:52 -07:00 • committed by Linus Torvalds
commit c9cf55285e
9 changed files with 61 additions and 27 deletions
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3
fs/jbd/journal.c
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@ -34,6 +34,7 @@
#include <linux/suspend.h>
#include <linux/pagemap.h>
#include <linux/kthread.h>
#include <linux/poison.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
@ -1675,7 +1676,7 @@ static void journal_free_journal_head(struct journal_head *jh)
{
#ifdef CONFIG_JBD_DEBUG
atomic_dec(&nr_journal_heads);
memset(jh, 0x5b, sizeof(*jh));
memset(jh, JBD_POISON_FREE, sizeof(*jh));
#endif
kmem_cache_free(journal_head_cache, jh);
}