The patch titled
dm: add debug macro
has been added to the -mm tree. Its filename is
dm-add-debug-macro.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: dm: add debug macro
From: Bryn Reeves <breeves@xxxxxxxxxx>
Add CONFIG_DM_DEBUG and DMDEBUG() macro.
Signed-off-by: Bryn Reeves <breeves@xxxxxxxxxx>
Signed-off-by: Alasdair G Kergon <agk@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/md/Kconfig | 8 ++++++++
drivers/md/dm.h | 5 +++++
2 files changed, 13 insertions(+)
diff -puN drivers/md/Kconfig~dm-add-debug-macro drivers/md/Kconfig
--- a/drivers/md/Kconfig~dm-add-debug-macro
+++ a/drivers/md/Kconfig
@@ -201,6 +201,14 @@ config BLK_DEV_DM
If unsure, say N.
+config DM_DEBUG
+ boolean "Device mapper debugging support"
+ depends on BLK_DEV_DM && EXPERIMENTAL
+ ---help---
+ Enable this for messages that may help debug device-mapper problems.
+
+ If unsure, say N.
+
config DM_CRYPT
tristate "Crypt target support"
depends on BLK_DEV_DM && EXPERIMENTAL
diff -puN drivers/md/dm.h~dm-add-debug-macro drivers/md/dm.h
--- a/drivers/md/dm.h~dm-add-debug-macro
+++ a/drivers/md/dm.h
@@ -21,6 +21,11 @@
#define DMERR(f, arg...) printk(KERN_ERR DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
#define DMWARN(f, arg...) printk(KERN_WARNING DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
#define DMINFO(f, arg...) printk(KERN_INFO DM_NAME ": " DM_MSG_PREFIX ": " f "\n", ## arg)
+#ifdef CONFIG_DM_DEBUG
+# define DMDEBUG(f, arg...) printk(KERN_DEBUG DM_NAME ": " DM_MSG_PREFIX " DEBUG: " f "\n", ## arg)
+#else
+# define DMDEBUG(f, arg...) do {} while (0)
+#endif
#define DMEMIT(x...) sz += ((sz >= maxlen) ? \
0 : scnprintf(result + sz, maxlen - sz, x))
_
Patches currently in -mm which might be from breeves@xxxxxxxxxx are
dm-add-debug-macro.patch
dm-extract-device-limit-setting.patch
dm-table-add-target-flush.patch
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