Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030392Ab2B2B2N (ORCPT ); Tue, 28 Feb 2012 20:28:13 -0500 Received: from e5.ny.us.ibm.com ([32.97.182.145]:50883 "EHLO e5.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932416Ab2B2B14 (ORCPT ); Tue, 28 Feb 2012 20:27:56 -0500 Date: Tue, 28 Feb 2012 17:27:38 -0800 From: "Darrick J. Wong" To: "Ted Ts'o" , Andreas Dilger , Sunil Mushran , Martin K Petersen , Greg Freemyer , Amir Goldstein , linux-kernel , Andi Kleen , Mingming Cao , Joel Becker , linux-fsdevel , linux-ext4@vger.kernel.org, Coly Li Subject: [RFC] e2fsprogs: Rework metadata_csum/gdt_csum flag handling Message-ID: <20120229012738.GD15164@tux1.beaverton.ibm.com> Reply-To: djwong@us.ibm.com References: <20120107082751.21970.84856.stgit@elm3c44.beaverton.ibm.com> <20120107082919.21970.99182.stgit@elm3c44.beaverton.ibm.com> <8ED6E1F9-DB56-4D31-BCA8-2A3A8D514BD5@dilger.ca> <20120213222828.GF21641@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120213222828.GF21641@thunk.org> User-Agent: Mutt/1.5.17+20080114 (2008-01-14) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12022901-5930-0000-0000-000005A5F7FD Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 23527 Lines: 644 Ok, I've reworked the block group descriptor checksum handling code per this email thread. INCOMPAT_BG_USE_META_CSUM is gone. METADATA_CSUM implies (and in fact overrides) GDT_CSUM. When both are set, the group descriptor checksum uses the same function as all other metadata blocks' checksums (by default crc32c). I created a helper function to determine if group descriptor checksums are enabled, and the actual gdt checksum verify/set functions are smart enough to use the correct function. Below are the changes that I intend to make to e2fsprogs. I'll integrate these changes into the (huge) e2fsprogs patchset, but wanted to aggregate the changes here first to avoid overwhelming reviewers. I'll send a kernel patch shortly. Question: What will happen to old kernels when METADATA_CSUM and GDT_CSUM are set? Should tune2fs/e2fsck change METADATA_CSUM|GDT_CSUM to only METADATA_CSUM if they encounter it? I'm a little concerned that a pre-METADATA_CSUM kernel will see the GDT_CSUM flag and assume it's ok to proceed in ro mode and get confused. Signed-off-by: Darrick J. Wong --- debugfs/debugfs.c | 3 +-- e2fsck/pass5.c | 18 ++++++----------- e2fsck/super.c | 3 +-- e2fsck/unix.c | 2 +- lib/e2p/feature.c | 2 -- lib/ext2fs/alloc.c | 6 ++---- lib/ext2fs/alloc_stats.c | 3 +-- lib/ext2fs/csum.c | 13 ++++-------- lib/ext2fs/ext2_fs.h | 6 +++++- lib/ext2fs/ext2fs.h | 12 ++++++++---- lib/ext2fs/initialize.c | 3 +-- lib/ext2fs/inode.c | 9 +++------ lib/ext2fs/openfs.c | 3 +-- lib/ext2fs/rw_bitmaps.c | 12 ++++-------- misc/dumpe2fs.c | 4 ++-- misc/mke2fs.c | 23 +++++----------------- misc/tune2fs.c | 48 +++------------------------------------------- resize/resize2fs.c | 12 ++++-------- 18 files changed, 52 insertions(+), 130 deletions(-) diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c index c1cbf06..9c8e48e 100644 --- a/debugfs/debugfs.c +++ b/debugfs/debugfs.c @@ -357,8 +357,7 @@ void do_show_super_stats(int argc, char *argv[]) return; } - gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + gdt_csum = ext2fs_has_group_desc_csum(current_fs); for (i = 0; i < current_fs->group_desc_count; i++) { fprintf(out, " Group %2d: block bitmap at %llu, " "inode bitmap at %llu, " diff --git a/e2fsck/pass5.c b/e2fsck/pass5.c index f1ce6d7..c5dba0b 100644 --- a/e2fsck/pass5.c +++ b/e2fsck/pass5.c @@ -88,7 +88,7 @@ static void check_inode_bitmap_checksum(e2fsck_t ctx) int nbytes; ext2_ino_t ino_itr; errcode_t retval; - int csum_flag = 0; + int csum_flag; /* If bitmap is dirty from being fixed, checksum will be corrected */ if (ext2fs_test_ib_dirty(ctx->fs)) @@ -103,9 +103,7 @@ static void check_inode_bitmap_checksum(e2fsck_t ctx) fatal_error(ctx, 0); } - if (EXT2_HAS_RO_COMPAT_FEATURE(ctx->fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) - csum_flag = 1; + csum_flag = ext2fs_has_group_desc_csum(ctx->fs); clear_problem_context(&pctx); for (i = 0; i < ctx->fs->group_desc_count; i++) { @@ -149,7 +147,7 @@ static void check_block_bitmap_checksum(e2fsck_t ctx) int nbytes; blk64_t blk_itr; errcode_t retval; - int csum_flag = 0; + int csum_flag; /* If bitmap is dirty from being fixed, checksum will be corrected */ if (ext2fs_test_bb_dirty(ctx->fs)) @@ -164,9 +162,7 @@ static void check_block_bitmap_checksum(e2fsck_t ctx) fatal_error(ctx, 0); } - if (EXT2_HAS_RO_COMPAT_FEATURE(ctx->fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) - csum_flag = 1; + csum_flag = ext2fs_has_group_desc_csum(ctx->fs); clear_problem_context(&pctx); for (i = 0; i < ctx->fs->group_desc_count; i++) { @@ -322,8 +318,7 @@ static void check_block_bitmaps(e2fsck_t ctx) goto errout; } - csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + csum_flag = ext2fs_has_group_desc_csum(fs); redo_counts: had_problem = 0; save_problem = 0; @@ -599,8 +594,7 @@ static void check_inode_bitmaps(e2fsck_t ctx) goto errout; } - csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + csum_flag = ext2fs_has_group_desc_csum(fs); redo_counts: had_problem = 0; save_problem = 0; diff --git a/e2fsck/super.c b/e2fsck/super.c index dbd337c..5f6fb08 100644 --- a/e2fsck/super.c +++ b/e2fsck/super.c @@ -583,8 +583,7 @@ void check_super_block(e2fsck_t ctx) first_block = sb->s_first_data_block; last_block = ext2fs_blocks_count(sb)-1; - csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + csum_flag = ext2fs_has_group_desc_csum(fs); for (i = 0; i < fs->group_desc_count; i++) { pctx.group = i; diff --git a/e2fsck/unix.c b/e2fsck/unix.c index 9319e40..d3fb8f8 100644 --- a/e2fsck/unix.c +++ b/e2fsck/unix.c @@ -1658,7 +1658,7 @@ no_journal: } if ((run_result & E2F_FLAG_CANCEL) == 0 && - sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM && + ext2fs_has_group_desc_csum(ctx->fs) && !(ctx->options & E2F_OPT_READONLY)) { retval = ext2fs_set_gdt_csum(ctx->fs); if (retval) { diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c index 9f9c6dd..486f846 100644 --- a/lib/e2p/feature.c +++ b/lib/e2p/feature.c @@ -87,8 +87,6 @@ static struct feature feature_list[] = { "mmp" }, { E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG, "flex_bg"}, - { E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM, - "bg_use_meta_csum"}, { 0, 0, 0 }, }; diff --git a/lib/ext2fs/alloc.c b/lib/ext2fs/alloc.c index 948a0ec..e62ed68 100644 --- a/lib/ext2fs/alloc.c +++ b/lib/ext2fs/alloc.c @@ -36,8 +36,7 @@ static void check_block_uninit(ext2_filsys fs, ext2fs_block_bitmap map, blk64_t blk, super_blk, old_desc_blk, new_desc_blk; int old_desc_blocks; - if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) || + if (!ext2fs_has_group_desc_csum(fs) || !(ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT))) return; @@ -83,8 +82,7 @@ static void check_inode_uninit(ext2_filsys fs, ext2fs_inode_bitmap map, { ext2_ino_t i, ino; - if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) || + if (!ext2fs_has_group_desc_csum(fs) || !(ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT))) return; diff --git a/lib/ext2fs/alloc_stats.c b/lib/ext2fs/alloc_stats.c index adec363..4229084 100644 --- a/lib/ext2fs/alloc_stats.c +++ b/lib/ext2fs/alloc_stats.c @@ -38,8 +38,7 @@ void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino, /* We don't strictly need to be clearing the uninit flag if inuse < 0 * (i.e. freeing inodes) but it also means something is bad. */ ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT); - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + if (ext2fs_has_group_desc_csum(fs)) { ext2_ino_t first_unused_inode = fs->super->s_inodes_per_group - ext2fs_bg_itable_unused(fs, group) + group * fs->super->s_inodes_per_group + 1; diff --git a/lib/ext2fs/csum.c b/lib/ext2fs/csum.c index 99ca652..425f736 100644 --- a/lib/ext2fs/csum.c +++ b/lib/ext2fs/csum.c @@ -743,9 +743,7 @@ STATIC __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group) #endif if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && - EXT2_HAS_INCOMPAT_FEATURE(fs->super, - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) { + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { /* new metadata csum code */ __u16 old_crc; __u32 crc32; @@ -781,8 +779,7 @@ out: int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group) { - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) && + if (ext2fs_has_group_desc_csum(fs) && (ext2fs_bg_checksum(fs, group) != ext2fs_group_desc_csum(fs, group))) return 0; @@ -792,8 +789,7 @@ int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group) void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group) { - if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) + if (!ext2fs_has_group_desc_csum(fs)) return; /* ext2fs_bg_checksum_set() sets the actual checksum field but @@ -827,8 +823,7 @@ errcode_t ext2fs_set_gdt_csum(ext2_filsys fs) if (!fs->inode_map) return EXT2_ET_NO_INODE_BITMAP; - if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) + if (!ext2fs_has_group_desc_csum(fs)) return 0; for (i = 0; i < fs->group_desc_count; i++) { diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h index c2e7fbe..89df977 100644 --- a/lib/ext2fs/ext2_fs.h +++ b/lib/ext2fs/ext2_fs.h @@ -729,6 +729,11 @@ struct ext2_super_block { #define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080 #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 #define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200 +/* + * METADATA_CSUM implies GDT_CSUM. When METADATA_CSUM is set, group + * descriptor checksums use the same algorithm as all other data + * structures' checksums. + */ #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 #define EXT4_FEATURE_RO_COMPAT_REPLICA 0x0800 @@ -743,7 +748,6 @@ struct ext2_super_block { #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 #define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 #define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 -#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x8000 #define EXT2_FEATURE_COMPAT_SUPP 0 #define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h index ff2799a..28cb626 100644 --- a/lib/ext2fs/ext2fs.h +++ b/lib/ext2fs/ext2fs.h @@ -579,8 +579,7 @@ typedef struct ext2_icount *ext2_icount_t; EXT3_FEATURE_INCOMPAT_EXTENTS|\ EXT4_FEATURE_INCOMPAT_FLEX_BG|\ EXT4_FEATURE_INCOMPAT_MMP|\ - EXT4_FEATURE_INCOMPAT_64BIT|\ - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM) + EXT4_FEATURE_INCOMPAT_64BIT) #else #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\ EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\ @@ -589,8 +588,7 @@ typedef struct ext2_icount *ext2_icount_t; EXT3_FEATURE_INCOMPAT_EXTENTS|\ EXT4_FEATURE_INCOMPAT_FLEX_BG|\ EXT4_FEATURE_INCOMPAT_MMP|\ - EXT4_FEATURE_INCOMPAT_64BIT|\ - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM) + EXT4_FEATURE_INCOMPAT_64BIT) #endif #ifdef CONFIG_QUOTA #define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\ @@ -646,6 +644,12 @@ typedef struct stat ext2fs_struct_stat; /* * function prototypes */ +static inline int ext2fs_has_group_desc_csum(ext2_filsys fs) +{ + return EXT2_HAS_RO_COMPAT_FEATURE(fs->super, + EXT4_FEATURE_RO_COMPAT_GDT_CSUM | + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM); +} /* alloc.c */ extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c index a63ea18..a22cab4 100644 --- a/lib/ext2fs/initialize.c +++ b/lib/ext2fs/initialize.c @@ -435,8 +435,7 @@ ipg_retry: * bitmaps will be accounted for when allocated). */ free_blocks = 0; - csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + csum_flag = ext2fs_has_group_desc_csum(fs); for (i = 0; i < fs->group_desc_count; i++) { /* * Don't set the BLOCK_UNINIT group for the last group diff --git a/lib/ext2fs/inode.c b/lib/ext2fs/inode.c index 74703c5..3e6d853 100644 --- a/lib/ext2fs/inode.c +++ b/lib/ext2fs/inode.c @@ -157,8 +157,7 @@ errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, scan->current_group); scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super); scan->blocks_left = scan->fs->inode_blocks_per_group; - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + if (ext2fs_has_group_desc_csum(fs)) { scan->inodes_left -= ext2fs_bg_itable_unused(fs, scan->current_group); scan->blocks_left = @@ -183,8 +182,7 @@ errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks, } if (scan->fs->badblocks && scan->fs->badblocks->num) scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS; - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) + if (ext2fs_has_group_desc_csum(fs)) scan->scan_flags |= EXT2_SF_DO_LAZY; *ret_scan = scan; return 0; @@ -250,8 +248,7 @@ static errcode_t get_next_blockgroup(ext2_inode_scan scan) scan->bytes_left = 0; scan->inodes_left = EXT2_INODES_PER_GROUP(fs->super); scan->blocks_left = fs->inode_blocks_per_group; - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + if (ext2fs_has_group_desc_csum(fs)) { scan->inodes_left -= ext2fs_bg_itable_unused(fs, scan->current_group); scan->blocks_left = diff --git a/lib/ext2fs/openfs.c b/lib/ext2fs/openfs.c index d2b64f4..2dc9b94 100644 --- a/lib/ext2fs/openfs.c +++ b/lib/ext2fs/openfs.c @@ -382,8 +382,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options, * If recovery is from backup superblock, Clear _UNININT flags & * reset bg_itable_unused to zero */ - if (superblock > 1 && EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) { + if (superblock > 1 && ext2fs_has_group_desc_csum(fs)) { dgrp_t group; for (group = 0; group < fs->group_desc_count; group++) { diff --git a/lib/ext2fs/rw_bitmaps.c b/lib/ext2fs/rw_bitmaps.c index a5097c1..18e18aa 100644 --- a/lib/ext2fs/rw_bitmaps.c +++ b/lib/ext2fs/rw_bitmaps.c @@ -36,7 +36,7 @@ static errcode_t write_bitmaps(ext2_filsys fs, int do_inode, int do_block) unsigned int nbits; errcode_t retval; char *block_buf = NULL, *inode_buf = NULL; - int csum_flag = 0; + int csum_flag; blk64_t blk; blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block); ext2_ino_t ino_itr = 1; @@ -46,9 +46,7 @@ static errcode_t write_bitmaps(ext2_filsys fs, int do_inode, int do_block) if (!(fs->flags & EXT2_FLAG_RW)) return EXT2_ET_RO_FILSYS; - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) - csum_flag = 1; + csum_flag = ext2fs_has_group_desc_csum(fs); inode_nbytes = block_nbytes = 0; if (do_block) { @@ -168,7 +166,7 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block) errcode_t retval; int block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8; int inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8; - int csum_flag = 0; + int csum_flag; int do_image = fs->flags & EXT2_FLAG_IMAGE_FILE; unsigned int cnt; blk64_t blk; @@ -181,9 +179,7 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block) fs->write_bitmaps = ext2fs_write_bitmaps; - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) - csum_flag = 1; + csum_flag = ext2fs_has_group_desc_csum(fs); retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf); if (retval) diff --git a/misc/dumpe2fs.c b/misc/dumpe2fs.c index b8f386e..3ceb0f8 100644 --- a/misc/dumpe2fs.c +++ b/misc/dumpe2fs.c @@ -114,7 +114,7 @@ static void print_bg_opts(ext2_filsys fs, dgrp_t i) { int first = 1, bg_flags = 0; - if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM) + if (ext2fs_has_group_desc_csum(fs)) bg_flags = ext2fs_bg_flags(fs, i); print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT", @@ -190,7 +190,7 @@ static void list_desc (ext2_filsys fs) print_range(first_block, last_block); fputs(")", stdout); print_bg_opts(fs, i); - if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM) + if (ext2fs_has_group_desc_csum(fs)) printf(_(" Checksum 0x%04x, unused inodes %u\n"), ext2fs_bg_checksum(fs, i), ext2fs_bg_itable_unused(fs, i)); diff --git a/misc/mke2fs.c b/misc/mke2fs.c index 8852735..f5d3d3b 100644 --- a/misc/mke2fs.c +++ b/misc/mke2fs.c @@ -885,8 +885,7 @@ static __u32 ok_features[3] = { EXT2_FEATURE_INCOMPAT_META_BG| EXT4_FEATURE_INCOMPAT_FLEX_BG| EXT4_FEATURE_INCOMPAT_MMP | - EXT4_FEATURE_INCOMPAT_64BIT | - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM, + EXT4_FEATURE_INCOMPAT_64BIT, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -2049,7 +2048,8 @@ static int should_do_undo(const char *name) int csum_flag, force_undo; csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + EXT4_FEATURE_RO_COMPAT_GDT_CSUM | + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM); force_undo = get_int_from_profile(fs_types, "force_undo", 0); if (!force_undo && (!csum_flag || !lazy_itable_init)) return 0; @@ -2306,19 +2306,6 @@ int main (int argc, char *argv[]) if (!quiet && EXT2_HAS_RO_COMPAT_FEATURE(fs->super, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { - if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) - printf(_("Group descriptor checksums " - "are not enabled. This reduces the " - "coverage of metadata checksumming. " - "Pass -O uninit_bg to rectify.\n")); - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) && - !EXT2_HAS_INCOMPAT_FEATURE(fs->super, - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) - printf(_("Group descriptor checksums will not use " - "the faster metadata_checksum algorithm. " - "Pass -O bg_use_meta_csum to rectify.\n")); if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super, EXT3_FEATURE_INCOMPAT_EXTENTS)) printf(_("Extents are not enabled. The file extent " @@ -2358,6 +2345,7 @@ int main (int argc, char *argv[]) (fs_param.s_feature_ro_compat & (EXT4_FEATURE_RO_COMPAT_HUGE_FILE|EXT4_FEATURE_RO_COMPAT_GDT_CSUM| EXT4_FEATURE_RO_COMPAT_DIR_NLINK| + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM| EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))) fs->super->s_kbytes_written = 1; @@ -2505,8 +2493,7 @@ int main (int argc, char *argv[]) * inodes as unused; we want e2fsck to consider all * inodes as potentially containing recoverable data. */ - if (fs->super->s_feature_ro_compat & - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) { + if (ext2fs_has_group_desc_csum(fs)) { for (i = 1; i < fs->group_desc_count; i++) ext2fs_bg_itable_unused_set(fs, i, 0); } diff --git a/misc/tune2fs.c b/misc/tune2fs.c index cba4d4c..5a55412 100644 --- a/misc/tune2fs.c +++ b/misc/tune2fs.c @@ -92,7 +92,6 @@ static unsigned long new_inode_size; static char *ext_mount_opts; static int usrquota, grpquota; static int rewrite_checksums; -static int rewrite_bgs_for_checksum; int journal_size, journal_flags; char *journal_device; @@ -138,8 +137,7 @@ 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_BG_USE_META_CSUM, + EXT4_FEATURE_INCOMPAT_MMP, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE | EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -159,8 +157,7 @@ static __u32 clear_ok_features[3] = { /* Incompat */ EXT2_FEATURE_INCOMPAT_FILETYPE | EXT4_FEATURE_INCOMPAT_FLEX_BG | - EXT4_FEATURE_INCOMPAT_MMP | - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM, + EXT4_FEATURE_INCOMPAT_MMP, /* R/O compat */ EXT2_FEATURE_RO_COMPAT_LARGE_FILE | EXT4_FEATURE_RO_COMPAT_HUGE_FILE| @@ -718,29 +715,6 @@ static void rewrite_metadata_checksums(ext2_filsys fs) } /* - * Rewrite just the block group checksums. Only call this function if - * you're _not_ calling rewrite_metadata_checksums; this function exists - * to handle the case that you're changing bg_use_meta_csum and NOT changing - * either gdt_csum or metadata_csum. - */ -static void rewrite_bg_checksums(ext2_filsys fs) -{ - int i; - - if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) || - !EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) - return; - - ext2fs_init_csum_seed(fs); - for (i = 0; i < fs->group_desc_count; i++) - ext2fs_group_desc_csum_set(fs, i); - fs->flags &= ~EXT2_FLAG_SUPER_ONLY; - ext2fs_mark_super_dirty(fs); -} - -/* * Update the feature set as provided by the user. */ static int update_feature_set(ext2_filsys fs, char *features) @@ -912,20 +886,6 @@ mmp_error: } } - if (FEATURE_ON(E2P_FEATURE_INCOMPAT, - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) { - if (check_fsck_needed(fs)) - exit(1); - rewrite_bgs_for_checksum = 1; - } - - if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, - EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) { - if (check_fsck_needed(fs)) - exit(1); - rewrite_bgs_for_checksum = 1; - } - if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { if (check_fsck_needed(fs)) @@ -965,7 +925,7 @@ mmp_error: } gd->bg_itable_unused = 0; gd->bg_flags = 0; - gd->bg_checksum = 0; + ext2fs_group_desc_csum_set(fs, i); } fs->flags &= ~EXT2_FLAG_SUPER_ONLY; } @@ -2588,8 +2548,6 @@ retry_open: } if (rewrite_checksums) rewrite_metadata_checksums(fs); - else if (rewrite_bgs_for_checksum) - rewrite_bg_checksums(fs); if (I_flag) { if (mount_flags & EXT2_MF_MOUNTED) { fputs(_("The inode size may only be " diff --git a/resize/resize2fs.c b/resize/resize2fs.c index dc2805d..8a02ff4 100644 --- a/resize/resize2fs.c +++ b/resize/resize2fs.c @@ -191,8 +191,7 @@ static void fix_uninit_block_bitmaps(ext2_filsys fs) int old_desc_blocks; dgrp_t g; - if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM))) + if (!ext2fs_has_group_desc_csum(fs)) return; for (g=0; g < fs->group_desc_count; g++) { @@ -482,8 +481,7 @@ retry: group_block = fs->super->s_first_data_block + old_fs->group_desc_count * fs->super->s_blocks_per_group; - csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM); + csum_flag = ext2fs_has_group_desc_csum(fs); adj = old_fs->group_desc_count; max_group = fs->group_desc_count - adj; if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) @@ -743,8 +741,7 @@ static void mark_fs_metablock(ext2_resize_t rfs, } else if (IS_INODE_TB(fs, group, blk)) { ext2fs_inode_table_loc_set(fs, group, 0); rfs->needed_blocks++; - } else if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) && + } else if (ext2fs_has_group_desc_csum(fs) && (ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT))) { /* * If the block bitmap is uninitialized, which means @@ -804,8 +801,7 @@ static errcode_t blocks_to_move(ext2_resize_t rfs) for (blk = ext2fs_blocks_count(fs->super); blk < ext2fs_blocks_count(old_fs->super); blk++) { g = ext2fs_group_of_blk2(fs, blk); - if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, - EXT4_FEATURE_RO_COMPAT_GDT_CSUM) && + if (ext2fs_has_group_desc_csum(fs) && ext2fs_bg_flags_test(old_fs, g, EXT2_BG_BLOCK_UNINIT)) { /* * The block bitmap is uninitialized, so skip -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/