From: Zheng Liu Subject: [PATCH v3 12/30] libext2fs: handle inline_data in block iterator function Date: Fri, 6 Dec 2013 17:57:59 +0800 Message-ID: <1386323897-2354-13-git-send-email-wenqing.lz@taobao.com> References: <1386323897-2354-1-git-send-email-wenqing.lz@taobao.com> Cc: Theodore Ts'o , "Darrick J. Wong" , Zheng Liu To: linux-ext4@vger.kernel.org Return-path: Received: from mail-pb0-f52.google.com ([209.85.160.52]:55198 "EHLO mail-pb0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757373Ab3LFJzw (ORCPT ); Fri, 6 Dec 2013 04:55:52 -0500 Received: by mail-pb0-f52.google.com with SMTP id uo5so784735pbc.39 for ; Fri, 06 Dec 2013 01:55:52 -0800 (PST) In-Reply-To: <1386323897-2354-1-git-send-email-wenqing.lz@taobao.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: From: Zheng Liu After applied this commit (a7f4c635), we have banned to traverse blocks for an inode which has inline data because no block belongs to it. But before calling this function, we need to check inline data flag. This commit add a sanity check ext2fs_inode_has_valid_blocks2() to fix them except that ext2fs_expand_dir because it will be fixed by another patch. Meanwhile in this commit it fixes a bug that when we kill a file we could leak an inode. Signed-off-by: Zheng Liu --- debugfs/debugfs.c | 9 ++++----- debugfs/filefrag.c | 12 +++++++----- debugfs/lsdel.c | 17 ++++++++++------- lib/ext2fs/valid_blk.c | 7 +++++++ misc/tune2fs.c | 3 ++- 5 files changed, 30 insertions(+), 18 deletions(-) diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c index e489f62..e600d58 100644 --- a/debugfs/debugfs.c +++ b/debugfs/debugfs.c @@ -1921,11 +1921,10 @@ static void kill_file_by_inode(ext2_ino_t inode) inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0); if (debugfs_write_inode(inode, &inode_buf, 0)) return; - if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) - return; - - ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, - release_blocks_proc, NULL); + if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) { + ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, + NULL, release_blocks_proc, NULL); + } printf("\n"); ext2fs_inode_alloc_stats2(current_fs, inode, -1, LINUX_S_ISDIR(inode_buf.i_mode)); diff --git a/debugfs/filefrag.c b/debugfs/filefrag.c index e82d133..7a82e8d 100644 --- a/debugfs/filefrag.c +++ b/debugfs/filefrag.c @@ -154,11 +154,13 @@ static void filefrag(ext2_ino_t ino, struct ext2_inode *inode, fs->name, num_blocks, EXT2_I_SIZE(inode)); } print_header(fs); - retval = ext2fs_block_iterate3(current_fs, ino, - BLOCK_FLAG_READ_ONLY, NULL, - filefrag_blocks_proc, fs); - if (retval) - com_err("ext2fs_block_iterate3", retval, 0); + if (ext2fs_inode_has_valid_blocks2(current_fs, inode)) { + retval = ext2fs_block_iterate3(current_fs, ino, + BLOCK_FLAG_READ_ONLY, NULL, + filefrag_blocks_proc, fs); + if (retval) + com_err("ext2fs_block_iterate3", retval, 0); + } report_filefrag(fs); fprintf(fs->f, "%s: %d contiguous extents%s\n", fs->name, fs->ext, diff --git a/debugfs/lsdel.c b/debugfs/lsdel.c index bed0ce6..ba84611 100644 --- a/debugfs/lsdel.c +++ b/debugfs/lsdel.c @@ -141,13 +141,16 @@ void do_lsdel(int argc, char **argv) lsd.free_blocks = 0; lsd.bad_blocks = 0; - retval = ext2fs_block_iterate3(current_fs, ino, - BLOCK_FLAG_READ_ONLY, block_buf, - lsdel_proc, &lsd); - if (retval) { - com_err("ls_deleted_inodes", retval, - "while calling ext2fs_block_iterate2"); - goto next; + if (ext2fs_inode_has_valid_blocks2(current_fs, &inode)) { + retval = ext2fs_block_iterate3(current_fs, ino, + BLOCK_FLAG_READ_ONLY, + block_buf, + lsdel_proc, &lsd); + if (retval) { + com_err("ls_deleted_inodes", retval, + "while calling ext2fs_block_iterate2"); + goto next; + } } if (lsd.free_blocks && !lsd.bad_blocks) { if (num_delarray >= max_delarray) { diff --git a/lib/ext2fs/valid_blk.c b/lib/ext2fs/valid_blk.c index 895e36e..db5d90a 100644 --- a/lib/ext2fs/valid_blk.c +++ b/lib/ext2fs/valid_blk.c @@ -52,6 +52,13 @@ int ext2fs_inode_has_valid_blocks2(ext2_filsys fs, struct ext2_inode *inode) return 0; /* Probably a fast symlink */ } } + + /* + * If this inode has inline data, it shouldn't have valid block + * entries. + */ + if (inode->i_flags & EXT4_INLINE_DATA_FL) + return 0; return 1; } diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 1ae0ee6..95c1886 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -688,7 +688,8 @@ static void rewrite_inodes(ext2_filsys fs) exit(1); } - if (LINUX_S_ISDIR(inode->i_mode)) { + if (LINUX_S_ISDIR(inode->i_mode) && + ext2fs_inode_has_valid_blocks2(fs, inode)) { retval = rewrite_directory(fs, ino, inode); if (retval) { com_err("rewrite_directory", retval, -- 1.7.9.7