dquot: move dquot initialization responsibility into the filesystem

Currently various places in the VFS call vfs_dq_init directly. This means we tie the quota code into the VFS. Get rid of that and make the filesystem responsible for the initialization. For most metadata operations this is a straight forward move into the methods, but for truncate and open it's a bit more complicated. For truncate we currently only call vfs_dq_init for the sys_truncate case because open already takes care of it for ftruncate and open(O_TRUNC) - the new code causes an additional vfs_dq_init for those which is harmless. For open the initialization is moved from do_filp_open into the open method, which means it happens slightly earlier now, and only for regular files. The latter is fine because we don't need to initialize it for operations on special files, and we already do it as part of the namespace operations for directories. Add a dquot_file_open helper that filesystems that support generic quotas can use to fill in ->open. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Jan Kara <[email protected]>
vieko · Mar 4, 2010 · 907f455 · 907f455
1 parent 9f75475
commit 907f455
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Showing 32 changed files with 220 additions and 56 deletions.
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
@@ -70,7 +70,7 @@ const struct file_operations ext2_file_operations = {
 	.compat_ioctl	= ext2_compat_ioctl,
 #endif
 	.mmap		= generic_file_mmap,
-	.open		= generic_file_open,
+	.open		= dquot_file_open,
 	.release	= ext2_release_file,
 	.fsync		= ext2_fsync,
 	.splice_read	= generic_file_splice_read,
@@ -87,7 +87,7 @@ const struct file_operations ext2_xip_file_operations = {
 	.compat_ioctl	= ext2_compat_ioctl,
 #endif
 	.mmap		= xip_file_mmap,
-	.open		= generic_file_open,
+	.open		= dquot_file_open,
 	.release	= ext2_release_file,
 	.fsync		= ext2_fsync,
 };

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
@@ -58,6 +58,8 @@ static inline int ext2_inode_is_fast_symlink(struct inode *inode)
  */
 void ext2_delete_inode (struct inode * inode)
 {
+	if (!is_bad_inode(inode))
+		vfs_dq_init(inode);
 	truncate_inode_pages(&inode->i_data, 0);
 
 	if (is_bad_inode(inode))
@@ -1457,6 +1459,9 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
 	error = inode_change_ok(inode, iattr);
 	if (error)
 		return error;
+
+	if (iattr->ia_valid & ATTR_SIZE)
+		vfs_dq_init(inode);
 	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
 	    (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
 		error = dquot_transfer(inode, iattr);

diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
@@ -31,6 +31,7 @@
  */
 
 #include <linux/pagemap.h>
+#include <linux/quotaops.h>
 #include "ext2.h"
 #include "xattr.h"
 #include "acl.h"
@@ -99,24 +100,27 @@ struct dentry *ext2_get_parent(struct dentry *child)
  */
 static int ext2_create (struct inode * dir, struct dentry * dentry, int mode, struct nameidata *nd)
 {
-	struct inode * inode = ext2_new_inode (dir, mode);
-	int err = PTR_ERR(inode);
-	if (!IS_ERR(inode)) {
-		inode->i_op = &ext2_file_inode_operations;
-		if (ext2_use_xip(inode->i_sb)) {
-			inode->i_mapping->a_ops = &ext2_aops_xip;
-			inode->i_fop = &ext2_xip_file_operations;
-		} else if (test_opt(inode->i_sb, NOBH)) {
-			inode->i_mapping->a_ops = &ext2_nobh_aops;
-			inode->i_fop = &ext2_file_operations;
-		} else {
-			inode->i_mapping->a_ops = &ext2_aops;
-			inode->i_fop = &ext2_file_operations;
-		}
-		mark_inode_dirty(inode);
-		err = ext2_add_nondir(dentry, inode);
+	struct inode *inode;
+
+	vfs_dq_init(dir);
+
+	inode = ext2_new_inode(dir, mode);
+	if (IS_ERR(inode))
+		return PTR_ERR(inode);
+
+	inode->i_op = &ext2_file_inode_operations;
+	if (ext2_use_xip(inode->i_sb)) {
+		inode->i_mapping->a_ops = &ext2_aops_xip;
+		inode->i_fop = &ext2_xip_file_operations;
+	} else if (test_opt(inode->i_sb, NOBH)) {
+		inode->i_mapping->a_ops = &ext2_nobh_aops;
+		inode->i_fop = &ext2_file_operations;
+	} else {
+		inode->i_mapping->a_ops = &ext2_aops;
+		inode->i_fop = &ext2_file_operations;
 	}
-	return err;
+	mark_inode_dirty(inode);
+	return ext2_add_nondir(dentry, inode);
 }
 
 static int ext2_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
@@ -127,6 +131,8 @@ static int ext2_mknod (struct inode * dir, struct dentry *dentry, int mode, dev_
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
+	vfs_dq_init(dir);
+
 	inode = ext2_new_inode (dir, mode);
 	err = PTR_ERR(inode);
 	if (!IS_ERR(inode)) {
@@ -151,6 +157,8 @@ static int ext2_symlink (struct inode * dir, struct dentry * dentry,
 	if (l > sb->s_blocksize)
 		goto out;
 
+	vfs_dq_init(dir);
+
 	inode = ext2_new_inode (dir, S_IFLNK | S_IRWXUGO);
 	err = PTR_ERR(inode);
 	if (IS_ERR(inode))
@@ -194,6 +202,8 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir,
 	if (inode->i_nlink >= EXT2_LINK_MAX)
 		return -EMLINK;
 
+	vfs_dq_init(dir);
+
 	inode->i_ctime = CURRENT_TIME_SEC;
 	inode_inc_link_count(inode);
 	atomic_inc(&inode->i_count);
@@ -216,6 +226,8 @@ static int ext2_mkdir(struct inode * dir, struct dentry * dentry, int mode)
 	if (dir->i_nlink >= EXT2_LINK_MAX)
 		goto out;
 
+	vfs_dq_init(dir);
+
 	inode_inc_link_count(dir);
 
 	inode = ext2_new_inode (dir, S_IFDIR | mode);
@@ -262,6 +274,8 @@ static int ext2_unlink(struct inode * dir, struct dentry *dentry)
 	struct page * page;
 	int err = -ENOENT;
 
+	vfs_dq_init(dir);
+
 	de = ext2_find_entry (dir, &dentry->d_name, &page);
 	if (!de)
 		goto out;
@@ -304,6 +318,9 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
 	struct ext2_dir_entry_2 * old_de;
 	int err = -ENOENT;
 
+	vfs_dq_init(old_dir);
+	vfs_dq_init(new_dir);
+
 	old_de = ext2_find_entry (old_dir, &old_dentry->d_name, &old_page);
 	if (!old_de)
 		goto out;

diff --git a/fs/ext3/file.c b/fs/ext3/file.c
@@ -62,7 +62,7 @@ const struct file_operations ext3_file_operations = {
 	.compat_ioctl	= ext3_compat_ioctl,
 #endif
 	.mmap		= generic_file_mmap,
-	.open		= generic_file_open,
+	.open		= dquot_file_open,
 	.release	= ext3_release_file,
 	.fsync		= ext3_sync_file,
 	.splice_read	= generic_file_splice_read,

diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
@@ -196,6 +196,9 @@ void ext3_delete_inode (struct inode * inode)
 {
 	handle_t *handle;
 
+	if (!is_bad_inode(inode))
+		vfs_dq_init(inode);
+
 	truncate_inode_pages(&inode->i_data, 0);
 
 	if (is_bad_inode(inode))
@@ -3148,6 +3151,8 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
 	if (error)
 		return error;
 
+	if (ia_valid & ATTR_SIZE)
+		vfs_dq_init(inode);
 	if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
 		(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
 		handle_t *handle;

diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
@@ -1696,6 +1696,8 @@ static int ext3_create (struct inode * dir, struct dentry * dentry, int mode,
 	struct inode * inode;
 	int err, retries = 0;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -1730,6 +1732,8 @@ static int ext3_mknod (struct inode * dir, struct dentry *dentry,
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -1766,6 +1770,8 @@ static int ext3_mkdir(struct inode * dir, struct dentry * dentry, int mode)
 	if (dir->i_nlink >= EXT3_LINK_MAX)
 		return -EMLINK;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT3_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -2060,7 +2066,9 @@ static int ext3_rmdir (struct inode * dir, struct dentry *dentry)
 
 	/* Initialize quotas before so that eventual writes go in
 	 * separate transaction */
+	vfs_dq_init(dir);
 	vfs_dq_init(dentry->d_inode);
+
 	handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);
@@ -2119,7 +2127,9 @@ static int ext3_unlink(struct inode * dir, struct dentry *dentry)
 
 	/* Initialize quotas before so that eventual writes go
 	 * in separate transaction */
+	vfs_dq_init(dir);
 	vfs_dq_init(dentry->d_inode);
+
 	handle = ext3_journal_start(dir, EXT3_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);
@@ -2174,6 +2184,8 @@ static int ext3_symlink (struct inode * dir,
 	if (l > dir->i_sb->s_blocksize)
 		return -ENAMETOOLONG;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT3_INDEX_EXTRA_TRANS_BLOCKS + 5 +
@@ -2228,6 +2240,9 @@ static int ext3_link (struct dentry * old_dentry,
 
 	if (inode->i_nlink >= EXT3_LINK_MAX)
 		return -EMLINK;
+
+	vfs_dq_init(dir);
+
 	/*
 	 * Return -ENOENT if we've raced with unlink and i_nlink is 0.  Doing
 	 * otherwise has the potential to corrupt the orphan inode list.
@@ -2278,6 +2293,9 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
 	struct ext3_dir_entry_2 * old_de, * new_de;
 	int retval, flush_file = 0;
 
+	vfs_dq_init(old_dir);
+	vfs_dq_init(new_dir);
+
 	old_bh = new_bh = dir_bh = NULL;
 
 	/* Initialize quotas before so that eventual writes go

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
@@ -127,7 +127,7 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
 			sb->s_dirt = 1;
 		}
 	}
-	return generic_file_open(inode, filp);
+	return dquot_file_open(inode, filp);
 }
 
 const struct file_operations ext4_file_operations = {

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
@@ -170,6 +170,9 @@ void ext4_delete_inode(struct inode *inode)
 	handle_t *handle;
 	int err;
 
+	if (!is_bad_inode(inode))
+		vfs_dq_init(inode);
+
 	if (ext4_should_order_data(inode))
 		ext4_begin_ordered_truncate(inode, 0);
 	truncate_inode_pages(&inode->i_data, 0);
@@ -5251,6 +5254,8 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
 	if (error)
 		return error;
 
+	if (ia_valid & ATTR_SIZE)
+		vfs_dq_init(inode);
 	if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
 		(ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
 		handle_t *handle;

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
@@ -1766,6 +1766,8 @@ static int ext4_create(struct inode *dir, struct dentry *dentry, int mode,
 	struct inode *inode;
 	int err, retries = 0;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -1800,6 +1802,8 @@ static int ext4_mknod(struct inode *dir, struct dentry *dentry,
 	if (!new_valid_dev(rdev))
 		return -EINVAL;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -1837,6 +1841,8 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 	if (EXT4_DIR_LINK_MAX(dir))
 		return -EMLINK;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
@@ -2136,7 +2142,9 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 
 	/* Initialize quotas before so that eventual writes go in
 	 * separate transaction */
+	vfs_dq_init(dir);
 	vfs_dq_init(dentry->d_inode);
+
 	handle = ext4_journal_start(dir, EXT4_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);
@@ -2195,7 +2203,9 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 
 	/* Initialize quotas before so that eventual writes go
 	 * in separate transaction */
+	vfs_dq_init(dir);
 	vfs_dq_init(dentry->d_inode);
+
 	handle = ext4_journal_start(dir, EXT4_DELETE_TRANS_BLOCKS(dir->i_sb));
 	if (IS_ERR(handle))
 		return PTR_ERR(handle);
@@ -2250,6 +2260,8 @@ static int ext4_symlink(struct inode *dir,
 	if (l > dir->i_sb->s_blocksize)
 		return -ENAMETOOLONG;
 
+	vfs_dq_init(dir);
+
 retry:
 	handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
 					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 5 +
@@ -2308,6 +2320,8 @@ static int ext4_link(struct dentry *old_dentry,
 	if (inode->i_nlink >= EXT4_LINK_MAX)
 		return -EMLINK;
 
+	vfs_dq_init(dir);
+
 	/*
 	 * Return -ENOENT if we've raced with unlink and i_nlink is 0.  Doing
 	 * otherwise has the potential to corrupt the orphan inode list.
@@ -2358,6 +2372,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 	struct ext4_dir_entry_2 *old_de, *new_de;
 	int retval, force_da_alloc = 0;
 
+	vfs_dq_init(old_dir);
+	vfs_dq_init(new_dir);
+
 	old_bh = new_bh = dir_bh = NULL;
 
 	/* Initialize quotas before so that eventual writes go

diff --git a/fs/inode.c b/fs/inode.c
@@ -8,7 +8,6 @@
 #include <linux/mm.h>
 #include <linux/dcache.h>
 #include <linux/init.h>
-#include <linux/quotaops.h>
 #include <linux/slab.h>
 #include <linux/writeback.h>
 #include <linux/module.h>
@@ -1210,8 +1209,6 @@ void generic_delete_inode(struct inode *inode)
 
 	if (op->delete_inode) {
 		void (*delete)(struct inode *) = op->delete_inode;
-		if (!is_bad_inode(inode))
-			vfs_dq_init(inode);
 		/* Filesystems implementing their own
 		 * s_op->delete_inode are required to call
 		 * truncate_inode_pages and clear_inode()

diff --git a/fs/jfs/file.c b/fs/jfs/file.c
@@ -48,7 +48,7 @@ static int jfs_open(struct inode *inode, struct file *file)
 {
 	int rc;
 
-	if ((rc = generic_file_open(inode, file)))
+	if ((rc = dquot_file_open(inode, file)))
 		return rc;
 
 	/*
@@ -98,6 +98,8 @@ int jfs_setattr(struct dentry *dentry, struct iattr *iattr)
 	if (rc)
 		return rc;
 
+	if (iattr->ia_valid & ATTR_SIZE)
+		vfs_dq_init(inode);
 	if ((iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid) ||
 	    (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)) {
 		rc = dquot_transfer(inode, iattr);

diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
@@ -146,6 +146,9 @@ void jfs_delete_inode(struct inode *inode)
 {
 	jfs_info("In jfs_delete_inode, inode = 0x%p", inode);
 
+	if (!is_bad_inode(inode))
+		vfs_dq_init(inode);
+
 	if (!is_bad_inode(inode) &&
 	    (JFS_IP(inode)->fileset == FILESYSTEM_I)) {
 		truncate_inode_pages(&inode->i_data, 0);