From: Zheng Liu Subject: [PATCH v3 22/30] tune2fs: add inline_data feature in tune2fs Date: Fri, 6 Dec 2013 17:58:09 +0800 Message-ID: <1386323897-2354-23-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-pd0-f182.google.com ([209.85.192.182]:60593 "EHLO mail-pd0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756772Ab3LFJ4R (ORCPT ); Fri, 6 Dec 2013 04:56:17 -0500 Received: by mail-pd0-f182.google.com with SMTP id v10so751966pde.27 for ; Fri, 06 Dec 2013 01:56:16 -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 This commit make us switch on/off inline_data feature in tune2fs. Now inline_data can be enabled without ext_attr. Hence we don't check it. As doing in mke2fs we need to check inode size when we want to enable it. Signed-off-by: Theodore Ts'o Signed-off-by: Zheng Liu --- misc/tune2fs.8.in | 3 ++ misc/tune2fs.c | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 97 insertions(+), 2 deletions(-) diff --git a/misc/tune2fs.8.in b/misc/tune2fs.8.in index 55c6dd9..8d56cdd 100644 --- a/misc/tune2fs.8.in +++ b/misc/tune2fs.8.in @@ -531,6 +531,9 @@ Setting the filesystem feature is equivalent to using the .B \-j option. .TP +.B inline_data +Allow data to be stored in the inode and extended attribute area. +.TP .B large_file Filesystem can contain files that are greater than 2GB. (Modern kernels set this feature automatically when a file > 2GB is created.) diff --git a/misc/tune2fs.c b/misc/tune2fs.c index 95c1886..d205df5 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -92,6 +92,7 @@ static unsigned long new_inode_size; static char *ext_mount_opts; static int usrquota, grpquota; static int rewrite_checksums; +static int disable_inline_data; int journal_size, journal_flags; char *journal_device; @@ -140,7 +141,8 @@ static __u32 ok_features[3] = { EXT2_FEATURE_INCOMPAT_FILETYPE | EXT3_FEATURE_INCOMPAT_EXTENTS | EXT4_FEATURE_INCOMPAT_FLEX_BG | - EXT4_FEATURE_INCOMPAT_MMP, + EXT4_FEATURE_INCOMPAT_MMP | + EXT4_FEATURE_INCOMPAT_INLINE_DATA, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE | EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -162,7 +164,8 @@ static __u32 clear_ok_features[3] = { /* Incompat */ EXT2_FEATURE_INCOMPAT_FILETYPE | EXT4_FEATURE_INCOMPAT_FLEX_BG | - EXT4_FEATURE_INCOMPAT_MMP, + EXT4_FEATURE_INCOMPAT_MMP | + EXT4_FEATURE_INCOMPAT_INLINE_DATA, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE | EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -745,6 +748,68 @@ static void rewrite_metadata_checksums(ext2_filsys fs) ext2fs_mark_super_dirty(fs); } +/* + * Allocate a block for all inodes with inline data. + */ +static void expand_inodes(ext2_filsys fs) +{ + int inode_size = EXT2_INODE_SIZE(fs->super); + struct ext2_inode *inode; + ext2_inode_scan scan; + errcode_t retval; + ext2_ino_t ino; + + retval = ext2fs_open_inode_scan(fs, 0, &scan); + if (retval) { + com_err("expand_inline_data", retval, + "while opening inode scan"); + exit(1); + } + + retval = ext2fs_get_mem(inode_size, &inode); + if (retval) { + com_err("expand_inline_data", retval, + "while allocating memory"); + exit(1); + } + + do { + retval = ext2fs_get_next_inode_full(scan, &ino, inode, + inode_size); + if (retval) { + com_err("expand_inline_data", retval, + "while getting next inode"); + exit(1); + } + if (!ino) + break; + if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) + continue; + if (!(inode->i_flags & EXT4_INLINE_DATA_FL)) + continue; + retval = ext2fs_inline_data_expand(fs, ino); + if (retval) { + com_err("expand_inline_data", retval, + "while expanding inode %lu", ino); + exit(1); + } + } while (ino); + + ext2fs_free_mem(&inode); + ext2fs_close_inode_scan(scan); +} + +static void expand_inline_data(ext2_filsys fs) +{ + ext2fs_read_bitmaps(fs); + expand_inodes(fs); + ext2fs_mark_ib_dirty(fs); + ext2fs_mark_bb_dirty(fs); + ext2fs_mmp_update2(fs, 1); + fs->flags &= ~EXT2_FLAG_SUPER_ONLY; + ext2fs_mark_super_dirty(fs); +} + static void enable_uninit_bg(ext2_filsys fs) { struct ext2_group_desc *gd; @@ -1083,6 +1148,31 @@ mmp_error: disable_uninit_bg(fs, EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + if (FEATURE_ON(E2P_FEATURE_INCOMPAT, + EXT4_FEATURE_INCOMPAT_INLINE_DATA)) { + /* + * Check inode size. If inode size is 128, tell user that + * inline data is useless. + */ + if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE) { + fputs(_("The inode size is too small to " + "store inline data.\n"), stderr); + return 1; + } + } + + if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, + EXT4_FEATURE_INCOMPAT_INLINE_DATA)) { + if (mount_flags & EXT2_MF_MOUNTED) { + fputs(_("The inline data feature can't be clear if " + "the filesystem is mounted\n"), stderr); + return 1; + } + if (check_fsck_needed(fs)) + return 1; + disable_inline_data = 1; + } + if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_QUOTA)) { /* @@ -2708,6 +2798,8 @@ retry_open: } if (rewrite_checksums) rewrite_metadata_checksums(fs); + if (disable_inline_data) + expand_inline_data(fs); if (I_flag) { if (mount_flags & EXT2_MF_MOUNTED) { fputs(_("The inode size may only be " -- 1.7.9.7