Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates for 3.4 from Ted Ts'o:
 "Ext4 commits for 3.3 merge window; mostly cleanups and bug fixes

  The changes to export dirty_writeback_interval are from Artem's s_dirt
  cleanup patch series.  The same is true of the change to remove the
  s_dirt helper functions which never got used by anyone in-tree.  I've
  run these changes by Al Viro, and am carrying them so that Artem can
  more easily fix up the rest of the file systems during the next merge
  window.  (Originally we had hopped to remove the use of s_dirt from
  ext4 during this merge window, but his patches had some bugs, so I
  ultimately ended dropping them from the ext4 tree.)"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (66 commits)
  vfs: remove unused superblock helpers
  mm: export dirty_writeback_interval
  ext4: remove useless s_dirt assignment
  ext4: write superblock only once on unmount
  ext4: do not mark superblock as dirty unnecessarily
  ext4: correct ext4_punch_hole return codes
  ext4: remove restrictive checks for EOFBLOCKS_FL
  ext4: always set then trimmed blocks count into len
  ext4: fix trimmed block count accunting
  ext4: fix start and len arguments handling in ext4_trim_fs()
  ext4: update s_free_{inodes,blocks}_count during online resize
  ext4: change some printk() calls to use ext4_msg() instead
  ext4: avoid output message interleaving in ext4_error_<foo>()
  ext4: remove trailing newlines from ext4_msg() and ext4_error() messages
  ext4: add no_printk argument validation, fix fallout
  ext4: remove redundant "EXT4-fs: " from uses of ext4_msg
  ext4: give more helpful error message in ext4_ext_rm_leaf()
  ext4: remove unused code from ext4_ext_map_blocks()
  ext4: rewrite punch hole to use ext4_ext_remove_space()
  jbd2: cleanup journal tail after transaction commit
  ...

1 files changed, 51 insertions, 44 deletions

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index feaa82f..c77b0bd 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -272,7 +272,7 @@ void ext4_da_update_reserve_space(struct inode *inode,
 	trace_ext4_da_update_reserve_space(inode, used, quota_claim);
 	if (unlikely(used > ei->i_reserved_data_blocks)) {
 		ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
-			 "with only %d reserved data blocks\n",
+			 "with only %d reserved data blocks",
 			 __func__, inode->i_ino, used,
 			 ei->i_reserved_data_blocks);
 		WARN_ON(1);
@@ -1165,7 +1165,7 @@ static void ext4_da_release_space(struct inode *inode, int to_free)
 		 */
 		ext4_msg(inode->i_sb, KERN_NOTICE, "ext4_da_release_space: "
 			 "ino %lu, to_free %d with only %d reserved "
-			 "data blocks\n", inode->i_ino, to_free,
+			 "data blocks", inode->i_ino, to_free,
 			 ei->i_reserved_data_blocks);
 		WARN_ON(1);
 		to_free = ei->i_reserved_data_blocks;
@@ -1428,20 +1428,22 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
 static void ext4_print_free_blocks(struct inode *inode)
 {
 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
-	printk(KERN_CRIT "Total free blocks count %lld\n",
+	struct super_block *sb = inode->i_sb;
+
+	ext4_msg(sb, KERN_CRIT, "Total free blocks count %lld",
 	       EXT4_C2B(EXT4_SB(inode->i_sb),
 			ext4_count_free_clusters(inode->i_sb)));
-	printk(KERN_CRIT "Free/Dirty block details\n");
-	printk(KERN_CRIT "free_blocks=%lld\n",
+	ext4_msg(sb, KERN_CRIT, "Free/Dirty block details");
+	ext4_msg(sb, KERN_CRIT, "free_blocks=%lld",
 	       (long long) EXT4_C2B(EXT4_SB(inode->i_sb),
 		percpu_counter_sum(&sbi->s_freeclusters_counter)));
-	printk(KERN_CRIT "dirty_blocks=%lld\n",
+	ext4_msg(sb, KERN_CRIT, "dirty_blocks=%lld",
 	       (long long) EXT4_C2B(EXT4_SB(inode->i_sb),
 		percpu_counter_sum(&sbi->s_dirtyclusters_counter)));
-	printk(KERN_CRIT "Block reservation details\n");
-	printk(KERN_CRIT "i_reserved_data_blocks=%u\n",
-	       EXT4_I(inode)->i_reserved_data_blocks);
-	printk(KERN_CRIT "i_reserved_meta_blocks=%u\n",
+	ext4_msg(sb, KERN_CRIT, "Block reservation details");
+	ext4_msg(sb, KERN_CRIT, "i_reserved_data_blocks=%u",
+		 EXT4_I(inode)->i_reserved_data_blocks);
+	ext4_msg(sb, KERN_CRIT, "i_reserved_meta_blocks=%u",
 	       EXT4_I(inode)->i_reserved_meta_blocks);
 	return;
 }
@@ -2482,13 +2484,14 @@ static int ext4_da_write_end(struct file *file,
 	int write_mode = (int)(unsigned long)fsdata;
 
 	if (write_mode == FALL_BACK_TO_NONDELALLOC) {
-		if (ext4_should_order_data(inode)) {
+		switch (ext4_inode_journal_mode(inode)) {
+		case EXT4_INODE_ORDERED_DATA_MODE:
 			return ext4_ordered_write_end(file, mapping, pos,
 					len, copied, page, fsdata);
-		} else if (ext4_should_writeback_data(inode)) {
+		case EXT4_INODE_WRITEBACK_DATA_MODE:
 			return ext4_writeback_write_end(file, mapping, pos,
 					len, copied, page, fsdata);
-		} else {
+		default:
 			BUG();
 		}
 	}
@@ -2763,7 +2766,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
 		goto out;
 
 	ext_debug("ext4_end_io_dio(): io_end 0x%p "
-		  "for inode %lu, iocb 0x%p, offset %llu, size %llu\n",
+		  "for inode %lu, iocb 0x%p, offset %llu, size %zd\n",
  		  iocb->private, io_end->inode->i_ino, iocb, offset,
 		  size);
 
@@ -2795,9 +2798,6 @@ out:
 
 	/* queue the work to convert unwritten extents to written */
 	queue_work(wq, &io_end->work);
-
-	/* XXX: probably should move into the real I/O completion handler */
-	inode_dio_done(inode);
 }
 
 static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
@@ -2811,8 +2811,9 @@ static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
 		goto out;
 
 	if (!(io_end->inode->i_sb->s_flags & MS_ACTIVE)) {
-		printk("sb umounted, discard end_io request for inode %lu\n",
-			io_end->inode->i_ino);
+		ext4_msg(io_end->inode->i_sb, KERN_INFO,
+			 "sb umounted, discard end_io request for inode %lu",
+			 io_end->inode->i_ino);
 		ext4_free_io_end(io_end);
 		goto out;
 	}
@@ -2921,9 +2922,12 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
 		iocb->private = NULL;
 		EXT4_I(inode)->cur_aio_dio = NULL;
 		if (!is_sync_kiocb(iocb)) {
-			iocb->private = ext4_init_io_end(inode, GFP_NOFS);
-			if (!iocb->private)
+			ext4_io_end_t *io_end =
+				ext4_init_io_end(inode, GFP_NOFS);
+			if (!io_end)
 				return -ENOMEM;
+			io_end->flag |= EXT4_IO_END_DIRECT;
+			iocb->private = io_end;
 			/*
 			 * we save the io structure for current async
 			 * direct IO, so that later ext4_map_blocks()
@@ -2940,7 +2944,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
 					 ext4_get_block_write,
 					 ext4_end_io_dio,
 					 NULL,
-					 DIO_LOCKING | DIO_SKIP_HOLES);
+					 DIO_LOCKING);
 		if (iocb->private)
 			EXT4_I(inode)->cur_aio_dio = NULL;
 		/*
@@ -3086,18 +3090,25 @@ static const struct address_space_operations ext4_da_aops = {
 
 void ext4_set_aops(struct inode *inode)
 {
-	if (ext4_should_order_data(inode) &&
-		test_opt(inode->i_sb, DELALLOC))
-		inode->i_mapping->a_ops = &ext4_da_aops;
-	else if (ext4_should_order_data(inode))
-		inode->i_mapping->a_ops = &ext4_ordered_aops;
-	else if (ext4_should_writeback_data(inode) &&
-		 test_opt(inode->i_sb, DELALLOC))
-		inode->i_mapping->a_ops = &ext4_da_aops;
-	else if (ext4_should_writeback_data(inode))
-		inode->i_mapping->a_ops = &ext4_writeback_aops;
-	else
+	switch (ext4_inode_journal_mode(inode)) {
+	case EXT4_INODE_ORDERED_DATA_MODE:
+		if (test_opt(inode->i_sb, DELALLOC))
+			inode->i_mapping->a_ops = &ext4_da_aops;
+		else
+			inode->i_mapping->a_ops = &ext4_ordered_aops;
+		break;
+	case EXT4_INODE_WRITEBACK_DATA_MODE:
+		if (test_opt(inode->i_sb, DELALLOC))
+			inode->i_mapping->a_ops = &ext4_da_aops;
+		else
+			inode->i_mapping->a_ops = &ext4_writeback_aops;
+		break;
+	case EXT4_INODE_JOURNAL_DATA_MODE:
 		inode->i_mapping->a_ops = &ext4_journalled_aops;
+		break;
+	default:
+		BUG();
+	}
 }
 
 
@@ -3329,16 +3340,16 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
 {
 	struct inode *inode = file->f_path.dentry->d_inode;
 	if (!S_ISREG(inode->i_mode))
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 
 	if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
 		/* TODO: Add support for non extent hole punching */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	if (EXT4_SB(inode->i_sb)->s_cluster_ratio > 1) {
 		/* TODO: Add support for bigalloc file systems */
-		return -ENOTSUPP;
+		return -EOPNOTSUPP;
 	}
 
 	return ext4_ext_punch_hole(file, offset, length);
@@ -3924,10 +3935,8 @@ static int ext4_do_update_inode(handle_t *handle,
 			ext4_update_dynamic_rev(sb);
 			EXT4_SET_RO_COMPAT_FEATURE(sb,
 					EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
-			sb->s_dirt = 1;
 			ext4_handle_sync(handle);
-			err = ext4_handle_dirty_metadata(handle, NULL,
-					EXT4_SB(sb)->s_sbh);
+			err = ext4_handle_dirty_super(handle, sb);
 		}
 	}
 	raw_inode->i_generation = cpu_to_le32(inode->i_generation);
@@ -4152,11 +4161,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
 	}
 
 	if (attr->ia_valid & ATTR_SIZE) {
-		if (attr->ia_size != i_size_read(inode)) {
+		if (attr->ia_size != i_size_read(inode))
 			truncate_setsize(inode, attr->ia_size);
-			ext4_truncate(inode);
-		} else if (ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))
-			ext4_truncate(inode);
+		ext4_truncate(inode);
 	}
 
 	if (!rc) {
@@ -4314,7 +4321,7 @@ int ext4_mark_iloc_dirty(handle_t *handle,
 {
 	int err = 0;
 
-	if (test_opt(inode->i_sb, I_VERSION))
+	if (IS_I_VERSION(inode))
 		inode_inc_iversion(inode);
 
 	/* the do_update_inode consumes one bh->b_count */