Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext3 removal, quota & udf fixes from Jan Kara:
 "The biggest change in the pull is the removal of ext3 filesystem
  driver (~28k lines removed).  Ext4 driver is a full featured
  replacement these days and both RH and SUSE use it for several years
  without issues.  Also there are some workarounds in VM & block layer
  mainly for ext3 which we could eventually get rid of.

  Other larger change is addition of proper error handling for
  dquot_initialize().  The rest is small fixes and cleanups"

[ I wasn't convinced about the ext3 removal and worried about things
  falling through the cracks for legacy users, but ext4 maintainers
  piped up and were all unanimously in favor of removal, and maintaining
  all legacy ext3 support inside ext4.   - Linus ]

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Don't modify filesystem for read-only mounts
  quota: remove an unneeded condition
  ext4: memory leak on error in ext4_symlink()
  mm/Kconfig: NEED_BOUNCE_POOL: clean-up condition
  ext4: Improve ext4 Kconfig test
  block: Remove forced page bouncing under IO
  fs: Remove ext3 filesystem driver
  doc: Update doc about journalling layer
  jfs: Handle error from dquot_initialize()
  reiserfs: Handle error from dquot_initialize()
  ocfs2: Handle error from dquot_initialize()
  ext4: Handle error from dquot_initialize()
  ext2: Handle error from dquot_initalize()
  quota: Propagate error from ->acquire_dquot()

4 files changed, 64 insertions, 26 deletions

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 719f7f4..7210583 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -105,8 +105,11 @@ static int ocfs2_file_open(struct inode *inode, struct file *file)
 			      file->f_path.dentry->d_name.len,
 			      file->f_path.dentry->d_name.name, mode);
 
-	if (file->f_mode & FMODE_WRITE)
-		dquot_initialize(inode);
+	if (file->f_mode & FMODE_WRITE) {
+		status = dquot_initialize(inode);
+		if (status)
+			goto leave;
+	}
 
 	spin_lock(&oi->ip_lock);
 
@@ -1155,8 +1158,11 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 	if (status)
 		return status;
 
-	if (is_quota_modification(inode, attr))
-		dquot_initialize(inode);
+	if (is_quota_modification(inode, attr)) {
+		status = dquot_initialize(inode);
+		if (status)
+			return status;
+	}
 	size_change = S_ISREG(inode->i_mode) && attr->ia_valid & ATTR_SIZE;
 	if (size_change) {
 		status = ocfs2_rw_lock(inode, 1);
@@ -1209,8 +1215,8 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 		    && OCFS2_HAS_RO_COMPAT_FEATURE(sb,
 		    OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
 			transfer_to[USRQUOTA] = dqget(sb, make_kqid_uid(attr->ia_uid));
-			if (!transfer_to[USRQUOTA]) {
-				status = -ESRCH;
+			if (IS_ERR(transfer_to[USRQUOTA])) {
+				status = PTR_ERR(transfer_to[USRQUOTA]);
 				goto bail_unlock;
 			}
 		}
@@ -1218,8 +1224,8 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 		    && OCFS2_HAS_RO_COMPAT_FEATURE(sb,
 		    OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
 			transfer_to[GRPQUOTA] = dqget(sb, make_kqid_gid(attr->ia_gid));
-			if (!transfer_to[GRPQUOTA]) {
-				status = -ESRCH;
+			if (IS_ERR(transfer_to[GRPQUOTA])) {
+				status = PTR_ERR(transfer_to[GRPQUOTA]);
 				goto bail_unlock;
 			}
 		}
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 6e6abb9..948681e 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -200,11 +200,12 @@ bail:
 static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
 {
 	struct inode *inode;
+	int status;
 
 	inode = new_inode(dir->i_sb);
 	if (!inode) {
 		mlog(ML_ERROR, "new_inode failed!\n");
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 
 	/* populate as many fields early on as possible - many of
@@ -213,7 +214,10 @@ static struct inode *ocfs2_get_init_inode(struct inode *dir, umode_t mode)
 	if (S_ISDIR(mode))
 		set_nlink(inode, 2);
 	inode_init_owner(inode, dir, mode);
-	dquot_initialize(inode);
+	status = dquot_initialize(inode);
+	if (status)
+		return ERR_PTR(status);
+
 	return inode;
 }
 
@@ -264,7 +268,11 @@ static int ocfs2_mknod(struct inode *dir,
 			  (unsigned long long)OCFS2_I(dir)->ip_blkno,
 			  (unsigned long)dev, mode);
 
-	dquot_initialize(dir);
+	status = dquot_initialize(dir);
+	if (status) {
+		mlog_errno(status);
+		return status;
+	}
 
 	/* get our super block */
 	osb = OCFS2_SB(dir->i_sb);
@@ -311,8 +319,9 @@ static int ocfs2_mknod(struct inode *dir,
 	}
 
 	inode = ocfs2_get_init_inode(dir, mode);
-	if (!inode) {
-		status = -ENOMEM;
+	if (IS_ERR(inode)) {
+		status = PTR_ERR(inode);
+		inode = NULL;
 		mlog_errno(status);
 		goto leave;
 	}
@@ -708,7 +717,11 @@ static int ocfs2_link(struct dentry *old_dentry,
 	if (S_ISDIR(inode->i_mode))
 		return -EPERM;
 
-	dquot_initialize(dir);
+	err = dquot_initialize(dir);
+	if (err) {
+		mlog_errno(err);
+		return err;
+	}
 
 	err = ocfs2_double_lock(osb, &old_dir_bh, old_dir,
 			&parent_fe_bh, dir, 0);
@@ -896,7 +909,11 @@ static int ocfs2_unlink(struct inode *dir,
 			   (unsigned long long)OCFS2_I(dir)->ip_blkno,
 			   (unsigned long long)OCFS2_I(inode)->ip_blkno);
 
-	dquot_initialize(dir);
+	status = dquot_initialize(dir);
+	if (status) {
+		mlog_errno(status);
+		return status;
+	}
 
 	BUG_ON(d_inode(dentry->d_parent) != dir);
 
@@ -1230,8 +1247,16 @@ static int ocfs2_rename(struct inode *old_dir,
 			   old_dentry->d_name.len, old_dentry->d_name.name,
 			   new_dentry->d_name.len, new_dentry->d_name.name);
 
-	dquot_initialize(old_dir);
-	dquot_initialize(new_dir);
+	status = dquot_initialize(old_dir);
+	if (status) {
+		mlog_errno(status);
+		goto bail;
+	}
+	status = dquot_initialize(new_dir);
+	if (status) {
+		mlog_errno(status);
+		goto bail;
+	}
 
 	osb = OCFS2_SB(old_dir->i_sb);
 
@@ -1786,7 +1811,11 @@ static int ocfs2_symlink(struct inode *dir,
 	trace_ocfs2_symlink_begin(dir, dentry, symname,
 				  dentry->d_name.len, dentry->d_name.name);
 
-	dquot_initialize(dir);
+	status = dquot_initialize(dir);
+	if (status) {
+		mlog_errno(status);
+		goto bail;
+	}
 
 	sb = dir->i_sb;
 	osb = OCFS2_SB(sb);
@@ -1831,8 +1860,9 @@ static int ocfs2_symlink(struct inode *dir,
 	}
 
 	inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO);
-	if (!inode) {
-		status = -ENOMEM;
+	if (IS_ERR(inode)) {
+		status = PTR_ERR(inode);
+		inode = NULL;
 		mlog_errno(status);
 		goto bail;
 	}
@@ -2485,8 +2515,9 @@ int ocfs2_create_inode_in_orphan(struct inode *dir,
 	}
 
 	inode = ocfs2_get_init_inode(dir, mode);
-	if (!inode) {
-		status = -ENOMEM;
+	if (IS_ERR(inode)) {
+		status = PTR_ERR(inode);
+		inode = NULL;
 		mlog_errno(status);
 		goto leave;
 	}
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 3d0b63d..bb07004 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -499,8 +499,8 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode,
 			dquot = dqget(sb,
 				      make_kqid(&init_user_ns, type,
 						le64_to_cpu(dqblk->dqb_id)));
-			if (!dquot) {
-				status = -EIO;
+			if (IS_ERR(dquot)) {
+				status = PTR_ERR(dquot);
 				mlog(ML_ERROR, "Failed to get quota structure "
 				     "for id %u, type %d. Cannot finish quota "
 				     "file recovery.\n",
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index b69dd14..7dc818b 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4419,8 +4419,9 @@ static int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,
 	}
 
 	mutex_lock(&inode->i_mutex);
-	dquot_initialize(dir);
-	error = ocfs2_reflink(old_dentry, dir, new_dentry, preserve);
+	error = dquot_initialize(dir);
+	if (!error)
+		error = ocfs2_reflink(old_dentry, dir, new_dentry, preserve);
 	mutex_unlock(&inode->i_mutex);
 	if (!error)
 		fsnotify_create(dir, new_dentry);