1 files changed, 82 insertions, 66 deletions

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 302f340d007..444927e5706 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -302,7 +302,7 @@ void ufs_error (struct super_block * sb, const char * function,
         if (!(sb->s_flags & MS_RDONLY)) {
                 usb1->fs_clean = UFS_FSBAD;
                 ubh_mark_buffer_dirty(USPI_UBH(uspi));
-                sb->s_dirt = 1;
+                ufs_mark_sb_dirty(sb);
                 sb->s_flags |= MS_RDONLY;
         }
         va_start (args, fmt);
@@ -334,7 +334,7 @@ void ufs_panic (struct super_block * sb, const char * function,
         if (!(sb->s_flags & MS_RDONLY)) {
                 usb1->fs_clean = UFS_FSBAD;
                 ubh_mark_buffer_dirty(USPI_UBH(uspi));
-                sb->s_dirt = 1;
+                ufs_mark_sb_dirty(sb);
         }
         va_start (args, fmt);
         vsnprintf (error_buf, sizeof(error_buf), fmt, args);
@@ -691,6 +691,83 @@ static void ufs_put_super_internal(struct super_block *sb)
         UFSD("EXIT\n");
 }
 
+static int ufs_sync_fs(struct super_block *sb, int wait)
+{
+        struct ufs_sb_private_info * uspi;
+        struct ufs_super_block_first * usb1;
+        struct ufs_super_block_third * usb3;
+        unsigned flags;
+
+        lock_ufs(sb);
+        lock_super(sb);
+
+        UFSD("ENTER\n");
+
+        flags = UFS_SB(sb)->s_flags;
+        uspi = UFS_SB(sb)->s_uspi;
+        usb1 = ubh_get_usb_first(uspi);
+        usb3 = ubh_get_usb_third(uspi);
+
+        usb1->fs_time = cpu_to_fs32(sb, get_seconds());
+        if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
+            (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
+            (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+                ufs_set_fs_state(sb, usb1, usb3,
+                                UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
+        ufs_put_cstotal(sb);
+
+        UFSD("EXIT\n");
+        unlock_super(sb);
+        unlock_ufs(sb);
+
+        return 0;
+}
+
+static void delayed_sync_fs(struct work_struct *work)
+{
+        struct ufs_sb_info *sbi;
+
+        sbi = container_of(work, struct ufs_sb_info, sync_work.work);
+
+        spin_lock(&sbi->work_lock);
+        sbi->work_queued = 0;
+        spin_unlock(&sbi->work_lock);
+
+        ufs_sync_fs(sbi->sb, 1);
+}
+
+void ufs_mark_sb_dirty(struct super_block *sb)
+{
+        struct ufs_sb_info *sbi = UFS_SB(sb);
+        unsigned long delay;
+
+        spin_lock(&sbi->work_lock);
+        if (!sbi->work_queued) {
+                delay = msecs_to_jiffies(dirty_writeback_interval * 10);
+                queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
+                sbi->work_queued = 1;
+        }
+        spin_unlock(&sbi->work_lock);
+}
+
+static void ufs_put_super(struct super_block *sb)
+{
+        struct ufs_sb_info * sbi = UFS_SB(sb);
+
+        UFSD("ENTER\n");
+
+        if (!(sb->s_flags & MS_RDONLY))
+                ufs_put_super_internal(sb);
+        cancel_delayed_work_sync(&sbi->sync_work);
+
+        ubh_brelse_uspi (sbi->s_uspi);
+        kfree (sbi->s_uspi);
+        kfree (sbi);
+        sb->s_fs_info = NULL;
+        UFSD("EXIT\n");
+        return;
+}
+
 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 {
         struct ufs_sb_info * sbi;
@@ -716,6 +793,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
         if (!sbi)
                 goto failed_nomem;
         sb->s_fs_info = sbi;
+        sbi->sb = sb;
 
         UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
         
@@ -727,6 +805,8 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
         }
 #endif
         mutex_init(&sbi->mutex);
+        spin_lock_init(&sbi->work_lock);
+        INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
         /*
          * Set default mount options
          * Parse mount options
@@ -1191,68 +1271,6 @@ failed_nomem:
         return -ENOMEM;
 }
 
-static int ufs_sync_fs(struct super_block *sb, int wait)
-{
-        struct ufs_sb_private_info * uspi;
-        struct ufs_super_block_first * usb1;
-        struct ufs_super_block_third * usb3;
-        unsigned flags;
-
-        lock_ufs(sb);
-        lock_super(sb);
-
-        UFSD("ENTER\n");
-
-        flags = UFS_SB(sb)->s_flags;
-        uspi = UFS_SB(sb)->s_uspi;
-        usb1 = ubh_get_usb_first(uspi);
-        usb3 = ubh_get_usb_third(uspi);
-
-        usb1->fs_time = cpu_to_fs32(sb, get_seconds());
-        if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
-            (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
-            (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
-                ufs_set_fs_state(sb, usb1, usb3,
-                                UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
-        ufs_put_cstotal(sb);
-        sb->s_dirt = 0;
-
-        UFSD("EXIT\n");
-        unlock_super(sb);
-        unlock_ufs(sb);
-
-        return 0;
-}
-
-static void ufs_write_super(struct super_block *sb)
-{
-        if (!(sb->s_flags & MS_RDONLY))
-                ufs_sync_fs(sb, 1);
-        else
-                sb->s_dirt = 0;
-}
-
-static void ufs_put_super(struct super_block *sb)
-{
-        struct ufs_sb_info * sbi = UFS_SB(sb);
-                
-        UFSD("ENTER\n");
-
-        if (sb->s_dirt)
-                ufs_write_super(sb);
-
-        if (!(sb->s_flags & MS_RDONLY))
-                ufs_put_super_internal(sb);
-        
-        ubh_brelse_uspi (sbi->s_uspi);
-        kfree (sbi->s_uspi);
-        kfree (sbi);
-        sb->s_fs_info = NULL;
-        UFSD("EXIT\n");
-        return;
-}
-
-
 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
 {
         struct ufs_sb_private_info * uspi;
@@ -1308,7 +1326,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
                         ufs_set_fs_state(sb, usb1, usb3,
                                 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
                 ubh_mark_buffer_dirty (USPI_UBH(uspi));
-                sb->s_dirt = 0;
                 sb->s_flags |= MS_RDONLY;
         } else {
         /*
@@ -1458,7 +1475,6 @@ static const struct super_operations ufs_super_ops = {
         .write_inode    = ufs_write_inode,
         .evict_inode    = ufs_evict_inode,
         .put_super      = ufs_put_super,
-        .write_super    = ufs_write_super,
         .sync_fs        = ufs_sync_fs,
         .statfs         = ufs_statfs,
         .remount_fs     = ufs_remount,