diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-06-29 13:23:08 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-07-03 16:23:28 +0400 |
| commit | af51a2ac36d1f96bee30438ec95a51e4635d1e33 (patch) | |
| tree | 51aaa115bd9678153c425c0fb4b98472bcf666e5 | |
| parent | 46a1c2c7ae53de2a5676754b54a73c591a3951d2 (diff) | |
ext4: ->tmpfile() support
very similar to ext3 counterpart...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/ext4/namei.c | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 6653fc35ecb..f91002f8c01 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2299,6 +2299,45 @@ retry: return err; } +static int ext4_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + handle_t *handle; + struct inode *inode; + int err, retries = 0; + + dquot_initialize(dir); + +retry: + inode = ext4_new_inode_start_handle(dir, mode, + NULL, 0, NULL, + EXT4_HT_DIR, + EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) + + 4 + EXT4_XATTR_TRANS_BLOCKS); + handle = ext4_journal_current_handle(); + err = PTR_ERR(inode); + if (!IS_ERR(inode)) { + inode->i_op = &ext4_file_inode_operations; + inode->i_fop = &ext4_file_operations; + ext4_set_aops(inode); + err = ext4_orphan_add(handle, inode); + if (err) + goto err_drop_inode; + mark_inode_dirty(inode); + d_tmpfile(dentry, inode); + unlock_new_inode(inode); + } + if (handle) + ext4_journal_stop(handle); + if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries)) + goto retry; + return err; +err_drop_inode: + ext4_journal_stop(handle); + unlock_new_inode(inode); + iput(inode); + return err; +} + struct ext4_dir_entry_2 *ext4_init_dot_dotdot(struct inode *inode, struct ext4_dir_entry_2 *de, int blocksize, int csum_size, @@ -2906,7 +2945,7 @@ static int ext4_link(struct dentry *old_dentry, retry: handle = ext4_journal_start(dir, EXT4_HT_DIR, (EXT4_DATA_TRANS_BLOCKS(dir->i_sb) + - EXT4_INDEX_EXTRA_TRANS_BLOCKS)); + EXT4_INDEX_EXTRA_TRANS_BLOCKS) + 1); if (IS_ERR(handle)) return PTR_ERR(handle); @@ -2920,6 +2959,11 @@ retry: err = ext4_add_entry(handle, dentry, inode); if (!err) { ext4_mark_inode_dirty(handle, inode); + /* this can happen only for tmpfile being + * linked the first time + */ + if (inode->i_nlink == 1) + ext4_orphan_del(handle, inode); d_instantiate(dentry, inode); } else { drop_nlink(inode); @@ -3172,6 +3216,7 @@ const struct inode_operations ext4_dir_inode_operations = { .mkdir = ext4_mkdir, .rmdir = ext4_rmdir, .mknod = ext4_mknod, + .tmpfile = ext4_tmpfile, .rename = ext4_rename, .setattr = ext4_setattr, .setxattr = generic_setxattr, |