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authorTheodore Ts'o <tytso@mit.edu>2008-10-05 20:50:06 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-10-05 20:50:06 -0400
commitede86cc473defab74d778aeac14b19f43129d4d1 (patch)
tree19da8009accf1737171f5949413e46a9086d5fdc /fs/ext4/super.c
parent23f8b79eae8a74e42a006ffa7c456e295c7e1c0d (diff)
ext4: Add debugging markers that can be used by systemtap
This debugging markers are designed to debug problems such as the random filesystem latency problems reported by Arjan. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r--fs/ext4/super.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dfcd41fafb9f..9c0214689de0 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -35,6 +35,7 @@
35#include <linux/quotaops.h> 35#include <linux/quotaops.h>
36#include <linux/seq_file.h> 36#include <linux/seq_file.h>
37#include <linux/proc_fs.h> 37#include <linux/proc_fs.h>
38#include <linux/marker.h>
38#include <linux/log2.h> 39#include <linux/log2.h>
39#include <linux/crc16.h> 40#include <linux/crc16.h>
40#include <asm/uaccess.h> 41#include <asm/uaccess.h>
@@ -2951,6 +2952,7 @@ static int ext4_sync_fs(struct super_block *sb, int wait)
2951{ 2952{
2952 tid_t target; 2953 tid_t target;
2953 2954
2955 trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
2954 sb->s_dirt = 0; 2956 sb->s_dirt = 0;
2955 if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) { 2957 if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
2956 if (wait) 2958 if (wait)