From: Tao Ma Subject: [PATCH V6 16/23] ext4: let ext4_delete_entry handle inline data. Date: Fri, 14 Sep 2012 19:25:04 +0800 Message-ID: <1347621911-4104-16-git-send-email-tm@tao.ma> References: <1347621512-3660-1-git-send-email-tm@tao.ma> <1347621911-4104-1-git-send-email-tm@tao.ma> To: linux-ext4@vger.kernel.org Return-path: Received: from oproxy6-pub.bluehost.com ([67.222.54.6]:56886 "HELO oproxy6-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752222Ab2INLeI (ORCPT ); Fri, 14 Sep 2012 07:34:08 -0400 Received: from [182.92.247.2] (port=60014 helo=tma-laptop1.taobao.ali.com) by box585.bluehost.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1TCU1f-0001sO-03 for linux-ext4@vger.kernel.org; Fri, 14 Sep 2012 05:25:35 -0600 In-Reply-To: <1347621911-4104-1-git-send-email-tm@tao.ma> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Tao Ma Signed-off-by: Tao Ma --- fs/ext4/inline.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/ext4/namei.c | 8 +++++++ fs/ext4/xattr.h | 13 ++++++++++++ 3 files changed, 76 insertions(+), 0 deletions(-) diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index f205d09..21c8957 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1504,6 +1504,61 @@ out_find: return iloc.bh; } +int ext4_delete_inline_entry(handle_t *handle, + struct inode *dir, + struct ext4_dir_entry_2 *de_del, + struct buffer_head *bh, + int *has_inline_data) +{ + int err, inline_size; + struct ext4_iloc iloc; + void *inline_start; + + err = ext4_get_inode_loc(dir, &iloc); + if (err) + return err; + + down_write(&EXT4_I(dir)->xattr_sem); + if (!ext4_has_inline_data(dir)) { + *has_inline_data = 0; + goto out; + } + + if ((void *)de_del - ((void *)ext4_raw_inode(&iloc)->i_block) < + EXT4_MIN_INLINE_DATA_SIZE) { + inline_start = (void *)ext4_raw_inode(&iloc)->i_block + + EXT4_INLINE_DOTDOT_SIZE; + inline_size = EXT4_MIN_INLINE_DATA_SIZE - + EXT4_INLINE_DOTDOT_SIZE; + } else { + inline_start = ext4_get_inline_xattr_pos(dir, &iloc); + inline_size = ext4_get_inline_size(dir) - + EXT4_MIN_INLINE_DATA_SIZE; + } + + err = ext4_journal_get_write_access(handle, bh); + if (err) + goto out; + + err = ext4_generic_delete_entry(handle, dir, de_del, bh, + inline_start, inline_size, 0); + if (err) + goto out; + + BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata"); + err = ext4_mark_inode_dirty(handle, dir); + if (unlikely(err)) + goto out; + + ext4_show_inline_dir(dir, iloc.bh, inline_start, inline_size); +out: + up_write(&EXT4_I(dir)->xattr_sem); + brelse(iloc.bh); + if (err != -ENOENT) + ext4_std_error(dir->i_sb, err); + return err; +} + int ext4_destroy_inline_data(handle_t *handle, struct inode *inode) { int ret; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 371c1a2..bdb7403 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2086,6 +2086,14 @@ static int ext4_delete_entry(handle_t *handle, { int err, csum_size = 0; + if (ext4_has_inline_data(dir)) { + int has_inline_data = 1; + err = ext4_delete_inline_entry(handle, dir, de_del, bh, + &has_inline_data); + if (has_inline_data) + return err; + } + if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) csum_size = sizeof(struct ext4_dir_entry_tail); diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index 01ab0b7..62a242a 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -175,6 +175,11 @@ extern struct buffer_head *ext4_find_inline_entry(struct inode *dir, const struct qstr *d_name, struct ext4_dir_entry_2 **res_dir, int *has_inline_data); +extern int ext4_delete_inline_entry(handle_t *handle, + struct inode *dir, + struct ext4_dir_entry_2 *de_del, + struct buffer_head *bh, + int *has_inline_data); # else /* CONFIG_EXT4_FS_XATTR */ static inline int @@ -366,6 +371,14 @@ struct buffer_head *ext4_find_inline_entry(struct inode *dir, { return NULL; } +static inline int ext4_delete_inline_entry(handle_t *handle, + struct inode *dir, + struct ext4_dir_entry_2 *de_del, + struct buffer_head *bh, + int *has_inline_data) +{ + return 0; +} # endif /* CONFIG_EXT4_FS_XATTR */ #ifdef CONFIG_EXT4_FS_SECURITY -- 1.7.1