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ext3 ->tmpfile() support 

In this case we do need a bit more than usual, due to orphan
list handling.

Change-Id: I355e9c97e04a03f89bb760009fecc160b25caeb7
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-06-11 12:52:02 +04:00 committed by LuK1337
parent 51d8156285
commit e6c66b91e7
1 changed files with 46 additions and 1 deletions
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47
fs/ext3/namei.c
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@ -1759,6 +1759,45 @@ retry:
return err;
}
static int ext3_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
{
handle_t *handle;
struct inode *inode;
int err, retries = 0;
dquot_initialize(dir);
retry:
handle = ext3_journal_start(dir, EXT3_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +
4 + EXT3_XATTR_TRANS_BLOCKS);
if (IS_ERR(handle))
return PTR_ERR(handle);
inode = ext3_new_inode (handle, dir, NULL, mode);
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
inode->i_op = &ext3_file_inode_operations;
inode->i_fop = &ext3_file_operations;
ext3_set_aops(inode);
err = ext3_orphan_add(handle, inode);
if (err)
goto err_drop_inode;
mark_inode_dirty(inode);
d_tmpfile(dentry, inode);
unlock_new_inode(inode);
}
ext3_journal_stop(handle);
if (err == -ENOSPC && ext3_should_retry_alloc(dir->i_sb, &retries))
goto retry;
return err;
err_drop_inode:
ext3_journal_stop(handle);
unlock_new_inode(inode);
iput(inode);
return err;
}
static int ext3_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
{
handle_t *handle;
@ -2300,7 +2339,7 @@ static int ext3_link (struct dentry * old_dentry,
retry:
handle = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) +
EXT3_INDEX_EXTRA_TRANS_BLOCKS);
EXT3_INDEX_EXTRA_TRANS_BLOCKS + 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
@ -2314,6 +2353,11 @@ retry:
err = ext3_add_entry(handle, dentry, inode);
if (!err) {
ext3_mark_inode_dirty(handle, inode);
/* this can happen only for tmpfile being
* linked the first time
*/
if (inode->i_nlink == 1)
ext3_orphan_del(handle, inode);
d_instantiate(dentry, inode);
} else {
drop_nlink(inode);
@ -2516,6 +2560,7 @@ const struct inode_operations ext3_dir_inode_operations = {
.mkdir = ext3_mkdir,
.rmdir = ext3_rmdir,
.mknod = ext3_mknod,
.tmpfile = ext3_tmpfile,
.rename = ext3_rename,
.setattr = ext3_setattr,
#ifdef CONFIG_EXT3_FS_XATTR