diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2008-10-05 20:50:06 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-10-05 20:50:06 -0400 |
| commit | ede86cc473defab74d778aeac14b19f43129d4d1 (patch) | |
| tree | 19da8009accf1737171f5949413e46a9086d5fdc /fs/ext4/super.c | |
| parent | 23f8b79eae8a74e42a006ffa7c456e295c7e1c0d (diff) | |
| download | lwn-ede86cc473defab74d778aeac14b19f43129d4d1.tar.gz lwn-ede86cc473defab74d778aeac14b19f43129d4d1.zip | |
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.c | 2 |
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 @@ #include <linux/quotaops.h> #include <linux/seq_file.h> #include <linux/proc_fs.h> +#include <linux/marker.h> #include <linux/log2.h> #include <linux/crc16.h> #include <asm/uaccess.h> @@ -2951,6 +2952,7 @@ static int ext4_sync_fs(struct super_block *sb, int wait) { tid_t target; + trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait); sb->s_dirt = 0; if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) { if (wait) |