ext4, jbd2: Drop unneeded printks at mount and unmount time

There are a number of kernel printk's which are printed when an ext4
filesystem is mounted and unmounted.  Disable them to economize space
in the system logs.  In addition, disabling the mballoc stats by
default saves a number of unneeded atomic operations for every block
allocation or deallocation.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 10a63096a95ae8c653616dce35bc4fd8620d0e8e..10539e364283ad9e0f21eaffe5eb5c9a65f2fed4 100644 (file)
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2380,6 +2380,7 @@ void ext4_ext_init(struct super_block *sb)
         */
 
        if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
+#if defined(AGGRESSIVE_TEST) || defined(CHECK_BINSEARCH) || defined(EXTENTS_STATS)
                printk(KERN_INFO "EXT4-fs: file extents enabled");
 #ifdef AGGRESSIVE_TEST
                printk(", aggressive tests");
@@ -2391,6 +2392,7 @@ void ext4_ext_init(struct super_block *sb)
                printk(", stats");
 #endif
                printk("\n");
+#endif
 #ifdef EXTENTS_STATS
                spin_lock_init(&EXT4_SB(sb)->s_ext_stats_lock);
                EXT4_SB(sb)->s_ext_min = 1 << 30;

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index c73d43995b13768e7fd5fc0849fd64936cd636c0..3e2320e66721afe0a52e8a3606fd22b98c44d1c3 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2712,8 +2712,6 @@ int ext4_mb_init(struct super_block *sb, int needs_recovery)
 
        if (sbi->s_journal)
                sbi->s_journal->j_commit_callback = release_blocks_on_commit;
-
-       printk(KERN_INFO "EXT4-fs: mballoc enabled\n");
        return 0;
 }
 

diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 188d3d709b24252d9ec68b1d384af0c6fd4c4ed4..14f25f253112ac59ff7ea6401a16c6a308ee55a9 100644 (file)
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -84,7 +84,7 @@ extern u8 mb_enable_debug;
  * with 'ext4_mb_stats' allocator will collect stats that will be
  * shown at umount. The collecting costs though!
  */
-#define MB_DEFAULT_STATS               1
+#define MB_DEFAULT_STATS               0
 
 /*
  * files smaller than MB_DEFAULT_STREAM_THRESHOLD are served

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3f7e7010c0985a74fba6602463f1dd138eb6cab5..e5b206a043a5771bfd84da0518dea83ab50cb326 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1673,13 +1673,6 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
                        EXT4_INODES_PER_GROUP(sb),
                        sbi->s_mount_opt);
 
-       if (EXT4_SB(sb)->s_journal) {
-               ext4_msg(sb, KERN_INFO, "%s journal on %s",
-                      EXT4_SB(sb)->s_journal->j_inode ? "internal" :
-                      "external", EXT4_SB(sb)->s_journal->j_devname);
-       } else {
-               ext4_msg(sb, KERN_INFO, "no journal");
-       }
        return res;
 }
 
@@ -2885,12 +2878,12 @@ no_journal:
                         "available");
        }
 
-       if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
+       if (test_opt(sb, DELALLOC) &&
+           (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)) {
                ext4_msg(sb, KERN_WARNING, "Ignoring delalloc option - "
                         "requested data journaling mode");
                clear_opt(sbi->s_mount_opt, DELALLOC);
-       } else if (test_opt(sb, DELALLOC))
-               ext4_msg(sb, KERN_INFO, "delayed allocation enabled");
+       }
 
        err = ext4_setup_system_zone(sb);
        if (err) {
@@ -3202,9 +3195,7 @@ static int ext4_load_journal(struct super_block *sb,
                        return -EINVAL;
        }
 
-       if (journal->j_flags & JBD2_BARRIER)
-               ext4_msg(sb, KERN_INFO, "barriers enabled");
-       else
+       if (!(journal->j_flags & JBD2_BARRIER))
                ext4_msg(sb, KERN_INFO, "barriers disabled");
 
        if (!really_read_only && test_opt(sb, UPDATE_JOURNAL)) {

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 53b86e16e5fe3a4bc29f8825db8b2a54b7e60fde..977a8dafb76d995f297b23918de8caf18fe59ac0 100644 (file)
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -136,10 +136,6 @@ static int kjournald2(void *arg)
        journal->j_task = current;
        wake_up(&journal->j_wait_done_commit);
 
-       printk(KERN_INFO "kjournald2 starting: pid %d, dev %s, "
-              "commit interval %ld seconds\n", current->pid,
-              journal->j_devname, journal->j_commit_interval / HZ);
-
        /*
         * And now, wait forever for commit wakeup events.
         */
@@ -223,7 +219,8 @@ static int jbd2_journal_start_thread(journal_t *journal)
 {
        struct task_struct *t;
 
-       t = kthread_run(kjournald2, journal, "kjournald2");
+       t = kthread_run(kjournald2, journal, "jbd2/%s",
+                       journal->j_devname);
        if (IS_ERR(t))
                return PTR_ERR(t);
 
@@ -1115,7 +1112,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
        while ((p = strchr(p, '/')))
                *p = '!';
        p = journal->j_devname + strlen(journal->j_devname);
-       sprintf(p, ":%lu", journal->j_inode->i_ino);
+       sprintf(p, "-%lu", journal->j_inode->i_ino);
        jbd_debug(1,
                  "journal %p: inode %s/%ld, size %Ld, bits %d, blksize %ld\n",
                  journal, inode->i_sb->s_id, inode->i_ino,