fs: Remove ext3 filesystem driver

The functionality of ext3 is fully supported by ext4 driver. Major
distributions (SUSE, RedHat) already use ext4 driver to handle ext3
filesystems for quite some time. There is some ugliness in mm resulting
from jbd cleaning buffers in a dirty page without cleaning page dirty
bit and also support for buffer bouncing in the block layer when stable
pages are required is there only because of jbd. So let's remove the
ext3 driver. This saves us some 28k lines of duplicated code.

Acked-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 0 insertions, 327 deletions

diff --git a/fs/ext3/ioctl.c b/fs/ext3/ioctl.c
deleted file mode 100644
index 4d96e9a64532..000000000000
--- a/fs/ext3/ioctl.c
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * linux/fs/ext3/ioctl.c
- *
- * Copyright (C) 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- */
-
-#include <linux/mount.h>
-#include <linux/compat.h>
-#include <asm/uaccess.h>
-#include "ext3.h"
-
-long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	struct inode *inode = file_inode(filp);
-	struct ext3_inode_info *ei = EXT3_I(inode);
-	unsigned int flags;
-	unsigned short rsv_window_size;
-
-	ext3_debug ("cmd = %u, arg = %lu\n", cmd, arg);
-
-	switch (cmd) {
-	case EXT3_IOC_GETFLAGS:
-		ext3_get_inode_flags(ei);
-		flags = ei->i_flags & EXT3_FL_USER_VISIBLE;
-		return put_user(flags, (int __user *) arg);
-	case EXT3_IOC_SETFLAGS: {
-		handle_t *handle = NULL;
-		int err;
-		struct ext3_iloc iloc;
-		unsigned int oldflags;
-		unsigned int jflag;
-
-		if (!inode_owner_or_capable(inode))
-			return -EACCES;
-
-		if (get_user(flags, (int __user *) arg))
-			return -EFAULT;
-
-		err = mnt_want_write_file(filp);
-		if (err)
-			return err;
-
-		flags = ext3_mask_flags(inode->i_mode, flags);
-
-		mutex_lock(&inode->i_mutex);
-
-		/* Is it quota file? Do not allow user to mess with it */
-		err = -EPERM;
-		if (IS_NOQUOTA(inode))
-			goto flags_out;
-
-		oldflags = ei->i_flags;
-
-		/* The JOURNAL_DATA flag is modifiable only by root */
-		jflag = flags & EXT3_JOURNAL_DATA_FL;
-
-		/*
-		 * The IMMUTABLE and APPEND_ONLY flags can only be changed by
-		 * the relevant capability.
-		 *
-		 * This test looks nicer. Thanks to Pauline Middelink
-		 */
-		if ((flags ^ oldflags) & (EXT3_APPEND_FL | EXT3_IMMUTABLE_FL)) {
-			if (!capable(CAP_LINUX_IMMUTABLE))
-				goto flags_out;
-		}
-
-		/*
-		 * The JOURNAL_DATA flag can only be changed by
-		 * the relevant capability.
-		 */
-		if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL)) {
-			if (!capable(CAP_SYS_RESOURCE))
-				goto flags_out;
-		}
-
-		handle = ext3_journal_start(inode, 1);
-		if (IS_ERR(handle)) {
-			err = PTR_ERR(handle);
-			goto flags_out;
-		}
-		if (IS_SYNC(inode))
-			handle->h_sync = 1;
-		err = ext3_reserve_inode_write(handle, inode, &iloc);
-		if (err)
-			goto flags_err;
-
-		flags = flags & EXT3_FL_USER_MODIFIABLE;
-		flags |= oldflags & ~EXT3_FL_USER_MODIFIABLE;
-		ei->i_flags = flags;
-
-		ext3_set_inode_flags(inode);
-		inode->i_ctime = CURRENT_TIME_SEC;
-
-		err = ext3_mark_iloc_dirty(handle, inode, &iloc);
-flags_err:
-		ext3_journal_stop(handle);
-		if (err)
-			goto flags_out;
-
-		if ((jflag ^ oldflags) & (EXT3_JOURNAL_DATA_FL))
-			err = ext3_change_inode_journal_flag(inode, jflag);
-flags_out:
-		mutex_unlock(&inode->i_mutex);
-		mnt_drop_write_file(filp);
-		return err;
-	}
-	case EXT3_IOC_GETVERSION:
-	case EXT3_IOC_GETVERSION_OLD:
-		return put_user(inode->i_generation, (int __user *) arg);
-	case EXT3_IOC_SETVERSION:
-	case EXT3_IOC_SETVERSION_OLD: {
-		handle_t *handle;
-		struct ext3_iloc iloc;
-		__u32 generation;
-		int err;
-
-		if (!inode_owner_or_capable(inode))
-			return -EPERM;
-
-		err = mnt_want_write_file(filp);
-		if (err)
-			return err;
-		if (get_user(generation, (int __user *) arg)) {
-			err = -EFAULT;
-			goto setversion_out;
-		}
-
-		mutex_lock(&inode->i_mutex);
-		handle = ext3_journal_start(inode, 1);
-		if (IS_ERR(handle)) {
-			err = PTR_ERR(handle);
-			goto unlock_out;
-		}
-		err = ext3_reserve_inode_write(handle, inode, &iloc);
-		if (err == 0) {
-			inode->i_ctime = CURRENT_TIME_SEC;
-			inode->i_generation = generation;
-			err = ext3_mark_iloc_dirty(handle, inode, &iloc);
-		}
-		ext3_journal_stop(handle);
-
-unlock_out:
-		mutex_unlock(&inode->i_mutex);
-setversion_out:
-		mnt_drop_write_file(filp);
-		return err;
-	}
-	case EXT3_IOC_GETRSVSZ:
-		if (test_opt(inode->i_sb, RESERVATION)
-			&& S_ISREG(inode->i_mode)
-			&& ei->i_block_alloc_info) {
-			rsv_window_size = ei->i_block_alloc_info->rsv_window_node.rsv_goal_size;
-			return put_user(rsv_window_size, (int __user *)arg);
-		}
-		return -ENOTTY;
-	case EXT3_IOC_SETRSVSZ: {
-		int err;
-
-		if (!test_opt(inode->i_sb, RESERVATION) ||!S_ISREG(inode->i_mode))
-			return -ENOTTY;
-
-		err = mnt_want_write_file(filp);
-		if (err)
-			return err;
-
-		if (!inode_owner_or_capable(inode)) {
-			err = -EACCES;
-			goto setrsvsz_out;
-		}
-
-		if (get_user(rsv_window_size, (int __user *)arg)) {
-			err = -EFAULT;
-			goto setrsvsz_out;
-		}
-
-		if (rsv_window_size > EXT3_MAX_RESERVE_BLOCKS)
-			rsv_window_size = EXT3_MAX_RESERVE_BLOCKS;
-
-		/*
-		 * need to allocate reservation structure for this inode
-		 * before set the window size
-		 */
-		mutex_lock(&ei->truncate_mutex);
-		if (!ei->i_block_alloc_info)
-			ext3_init_block_alloc_info(inode);
-
-		if (ei->i_block_alloc_info){
-			struct ext3_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
-			rsv->rsv_goal_size = rsv_window_size;
-		}
-		mutex_unlock(&ei->truncate_mutex);
-setrsvsz_out:
-		mnt_drop_write_file(filp);
-		return err;
-	}
-	case EXT3_IOC_GROUP_EXTEND: {
-		ext3_fsblk_t n_blocks_count;
-		struct super_block *sb = inode->i_sb;
-		int err, err2;
-
-		if (!capable(CAP_SYS_RESOURCE))
-			return -EPERM;
-
-		err = mnt_want_write_file(filp);
-		if (err)
-			return err;
-
-		if (get_user(n_blocks_count, (__u32 __user *)arg)) {
-			err = -EFAULT;
-			goto group_extend_out;
-		}
-		err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
-		journal_lock_updates(EXT3_SB(sb)->s_journal);
-		err2 = journal_flush(EXT3_SB(sb)->s_journal);
-		journal_unlock_updates(EXT3_SB(sb)->s_journal);
-		if (err == 0)
-			err = err2;
-group_extend_out:
-		mnt_drop_write_file(filp);
-		return err;
-	}
-	case EXT3_IOC_GROUP_ADD: {
-		struct ext3_new_group_data input;
-		struct super_block *sb = inode->i_sb;
-		int err, err2;
-
-		if (!capable(CAP_SYS_RESOURCE))
-			return -EPERM;
-
-		err = mnt_want_write_file(filp);
-		if (err)
-			return err;
-
-		if (copy_from_user(&input, (struct ext3_new_group_input __user *)arg,
-				sizeof(input))) {
-			err = -EFAULT;
-			goto group_add_out;
-		}
-
-		err = ext3_group_add(sb, &input);
-		journal_lock_updates(EXT3_SB(sb)->s_journal);
-		err2 = journal_flush(EXT3_SB(sb)->s_journal);
-		journal_unlock_updates(EXT3_SB(sb)->s_journal);
-		if (err == 0)
-			err = err2;
-group_add_out:
-		mnt_drop_write_file(filp);
-		return err;
-	}
-	case FITRIM: {
-
-		struct super_block *sb = inode->i_sb;
-		struct fstrim_range range;
-		int ret = 0;
-
-		if (!capable(CAP_SYS_ADMIN))
-			return -EPERM;
-
-		if (copy_from_user(&range, (struct fstrim_range __user *)arg,
-				   sizeof(range)))
-			return -EFAULT;
-
-		ret = ext3_trim_fs(sb, &range);
-		if (ret < 0)
-			return ret;
-
-		if (copy_to_user((struct fstrim_range __user *)arg, &range,
-				 sizeof(range)))
-			return -EFAULT;
-
-		return 0;
-	}
-
-	default:
-		return -ENOTTY;
-	}
-}
-
-#ifdef CONFIG_COMPAT
-long ext3_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	/* These are just misnamed, they actually get/put from/to user an int */
-	switch (cmd) {
-	case EXT3_IOC32_GETFLAGS:
-		cmd = EXT3_IOC_GETFLAGS;
-		break;
-	case EXT3_IOC32_SETFLAGS:
-		cmd = EXT3_IOC_SETFLAGS;
-		break;
-	case EXT3_IOC32_GETVERSION:
-		cmd = EXT3_IOC_GETVERSION;
-		break;
-	case EXT3_IOC32_SETVERSION:
-		cmd = EXT3_IOC_SETVERSION;
-		break;
-	case EXT3_IOC32_GROUP_EXTEND:
-		cmd = EXT3_IOC_GROUP_EXTEND;
-		break;
-	case EXT3_IOC32_GETVERSION_OLD:
-		cmd = EXT3_IOC_GETVERSION_OLD;
-		break;
-	case EXT3_IOC32_SETVERSION_OLD:
-		cmd = EXT3_IOC_SETVERSION_OLD;
-		break;
-#ifdef CONFIG_JBD_DEBUG
-	case EXT3_IOC32_WAIT_FOR_READONLY:
-		cmd = EXT3_IOC_WAIT_FOR_READONLY;
-		break;
-#endif
-	case EXT3_IOC32_GETRSVSZ:
-		cmd = EXT3_IOC_GETRSVSZ;
-		break;
-	case EXT3_IOC32_SETRSVSZ:
-		cmd = EXT3_IOC_SETRSVSZ;
-		break;
-	case EXT3_IOC_GROUP_ADD:
-		break;
-	default:
-		return -ENOIOCTLCMD;
-	}
-	return ext3_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
-}
-#endif