remove ->write_super call in generic_shutdown_super

We just did a full fs writeout using sync_filesystem before, and if
that's not enough for the filesystem it can perform it's own writeout
in ->put_super, which many filesystems already do.

Move a call to foofs_write_super into every foofs_put_super for now to
guarantee identical behaviour until it's cleaned up by the individual
filesystem maintainers.

Exceptions:

 - affs already has identical copy & pasted code at the beginning of
   affs_put_super so no need to do it twice.
 - xfs does the right thing without it and I have changes pending for
   the xfs tree touching this are so I don't really need conflicts
   here..

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

13 files changed, 36 insertions, 2 deletions

diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index cc4062d12ca..4cf3d269e27 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -30,6 +30,7 @@ MODULE_LICENSE("GPL");
 #define dprintf(x...)
 #endif
 
+static void bfs_write_super(struct super_block *s);
 void dump_imap(const char *prefix, struct super_block *s);
 
 struct inode *bfs_iget(struct super_block *sb, unsigned long ino)
@@ -216,6 +217,9 @@ static void bfs_put_super(struct super_block *s)
         if (!info)
                 return;
 
+        if (s->s_dirt)
+                bfs_write_super(s);
+
         brelse(info->si_sbh);
         mutex_destroy(&info->bfs_lock);
         kfree(info->si_imap);
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 9f1985e857e..3cdb761db8a 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -258,6 +258,9 @@ static void exofs_put_super(struct super_block *sb)
         int num_pend;
         struct exofs_sb_info *sbi = sb->s_fs_info;
 
+        if (sb->s_dirt)
+                exofs_write_super(sb);
+
         /* make sure there are no pending commands */
         for (num_pend = atomic_read(&sbi->s_curr_pending); num_pend > 0;
              num_pend = atomic_read(&sbi->s_curr_pending)) {
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index e3c748faf2d..932a2bcb690 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -114,6 +114,9 @@ static void ext2_put_super (struct super_block * sb)
         int i;
         struct ext2_sb_info *sbi = EXT2_SB(sb);
 
+        if (sb->s_dirt)
+                ext2_write_super(sb);
+
         ext2_xattr_put_super(sb);
         if (!(sb->s_flags & MS_RDONLY)) {
                 struct ext2_super_block *es = sbi->s_es;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f016707597a..c7b8f8d9b7a 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -576,6 +576,9 @@ static void ext4_put_super(struct super_block *sb)
         struct ext4_super_block *es = sbi->s_es;
         int i, err;
 
+        if (sb->s_dirt)
+                ext4_write_super(sb);
+
         ext4_release_system_zone(sb);
         ext4_mb_release(sb);
         ext4_ext_release(sb);
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 296785a0dec..4978621511b 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -451,6 +451,9 @@ static void fat_put_super(struct super_block *sb)
 {
         struct msdos_sb_info *sbi = MSDOS_SB(sb);
 
+        if (sb->s_dirt)
+                fat_write_super(sb);
+
         if (sbi->nls_disk) {
                 unload_nls(sbi->nls_disk);
                 sbi->nls_disk = NULL;
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index a36bb749926..e071e6d0646 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -65,6 +65,8 @@ static void hfs_write_super(struct super_block *sb)
  */
 static void hfs_put_super(struct super_block *sb)
 {
+        if (sb->s_dirt)
+                hfs_write_super(sb);
         hfs_mdb_close(sb);
         /* release the MDB's resources */
         hfs_mdb_put(sb);
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index f2a64020f42..40bdab79dae 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -199,6 +199,8 @@ static void hfsplus_put_super(struct super_block *sb)
         dprint(DBG_SUPER, "hfsplus_put_super\n");
         if (!sb->s_fs_info)
                 return;
+        if (sb->s_dirt)
+                hfsplus_write_super(sb);
         if (!(sb->s_flags & MS_RDONLY) && HFSPLUS_SB(sb).s_vhdr) {
                 struct hfsplus_vh *vhdr = HFSPLUS_SB(sb).s_vhdr;
 
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 4c4e18c54a5..5059e9633ed 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -174,6 +174,9 @@ static void jffs2_put_super (struct super_block *sb)
 
         D2(printk(KERN_DEBUG "jffs2: jffs2_put_super()\n"));
 
+        if (sb->s_dirt)
+                jffs2_write_super(sb);
+
         mutex_lock(&c->alloc_sem);
         jffs2_flush_wbuf_pad(c);
         mutex_unlock(&c->alloc_sem);
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 6989b03e97a..7901d8cbb9b 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -65,6 +65,7 @@ MODULE_DESCRIPTION("A New Implementation of the Log-structured Filesystem "
                    "(NILFS)");
 MODULE_LICENSE("GPL");
 
+static void nilfs_write_super(struct super_block *sb);
 static int nilfs_remount(struct super_block *sb, int *flags, char *data);
 static int test_exclusive_mount(struct file_system_type *fs_type,
                                 struct block_device *bdev, int flags);
@@ -315,6 +316,9 @@ static void nilfs_put_super(struct super_block *sb)
         struct nilfs_sb_info *sbi = NILFS_SB(sb);
         struct the_nilfs *nilfs = sbi->s_nilfs;
 
+        if (sb->s_dirt)
+                nilfs_write_super(sb);
+
         nilfs_detach_segment_constructor(sbi);
 
         if (!(sb->s_flags & MS_RDONLY)) {
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 9dbdcfb5d31..1b52daa351c 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -468,6 +468,9 @@ static void reiserfs_put_super(struct super_block *s)
         struct reiserfs_transaction_handle th;
         th.t_trans_id = 0;
 
+        if (s->s_dirt)
+                reiserfs_write_super(s);
+
         /* change file system state to current state if it was mounted with read-write permissions */
         if (!(s->s_flags & MS_RDONLY)) {
                 if (!journal_begin(&th, s, 10)) {
diff --git a/fs/super.c b/fs/super.c
index 721236e6177..d9a29d5b1d2 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -311,8 +311,6 @@ void generic_shutdown_super(struct super_block *sb)
                 invalidate_inodes(sb);
                 lock_kernel();
 
-                if (sop->write_super && sb->s_dirt)
-                        sop->write_super(sb);
                 if (sop->put_super)
                         sop->put_super(sb);
 
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index da20b48d350..cd80316302c 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -72,6 +72,9 @@ static void sysv_put_super(struct super_block *sb)
 {
         struct sysv_sb_info *sbi = SYSV_SB(sb);
 
+        if (sb->s_dirt)
+                sysv_write_super(sb);
+
         if (!(sb->s_flags & MS_RDONLY)) {
                 /* XXX ext2 also updates the state here */
                 mark_buffer_dirty(sbi->s_bh1);
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 60359291761..74afb9fbf58 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1152,6 +1152,9 @@ static void ufs_put_super(struct super_block *sb)
                 
         UFSD("ENTER\n");
 
+        if (sb->s_dirt)
+                ufs_write_super(sb);
+
         if (!(sb->s_flags & MS_RDONLY))
                 ufs_put_super_internal(sb);