[PATCH] ext4: printk stack trace on ext4_error, ext4_abort and ext4_warning.

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

This helps in better debugging of the problem reported.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 fs/ext4/super.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index cd7cac0..93f4820 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -238,6 +238,7 @@ void ext4_error (struct super_block * sb, const char * function,
 	vprintk(fmt, args);
 	printk("\n");
 	va_end(args);
+	dump_stack();
 
 	ext4_handle_error(sb);
 }
@@ -320,6 +321,7 @@ void ext4_abort (struct super_block * sb, const char * function,
 	vprintk(fmt, args);
 	printk("\n");
 	va_end(args);
+	dump_stack();
 
 	if (test_opt(sb, ERRORS_PANIC))
 		panic("EXT4-fs panic from previous error\n");
@@ -345,6 +347,7 @@ void ext4_warning (struct super_block * sb, const char * function,
 	vprintk(fmt, args);
 	printk("\n");
 	va_end(args);
+	dump_stack();
 }
 
 void ext4_update_dynamic_rev(struct super_block *sb)
-- 
1.5.5.1.211.g65ea3.dirty