"Darrick J. Wong" <darrick.wong@xxxxxxxxxx> writes: > On Mon, Oct 13, 2014 at 01:06:06AM +0400, Dmitry Monakhov wrote: >> Besides the fact that this replacement improves code readability >> it also protects from errors caused direct EXT4_S(sb)->s_es manipulation >> which may result attempt to use uninitialized csum machinery. >> >> #Testcase_BEGIN >> IMG=/dev/ram0 >> MNT=/mnt >> mkfs.ext4 $IMG >> mount $IMG $MNT >> #Enable feature directly on disk, on mounted fs >> tune2fs -O metadata_csum $IMG >> # Provoke metadata update, likey result in OOPS >> touch $MNT/test >> umount $MNT >> #Testcase_END >> >> # Replacement script >> @@ >> expression E; >> @@ >> - EXT4_HAS_RO_COMPAT_FEATURE(E, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) >> + ext4_has_metadata_csum(E) >> >> Changes v1->v2 >> - fix early ext_fill_super stage >> >> https://bugzilla.kernel.org/show_bug.cgi?id=82201 >> >> Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> >> --- >> fs/ext4/bitmap.c | 12 ++++-------- >> fs/ext4/ext4.h | 8 ++++++++ >> fs/ext4/extents.c | 6 ++---- >> fs/ext4/ialloc.c | 3 +-- >> fs/ext4/inline.c | 3 +-- >> fs/ext4/inode.c | 9 +++------ >> fs/ext4/ioctl.c | 3 +-- >> fs/ext4/mmp.c | 6 ++---- >> fs/ext4/namei.c | 39 +++++++++++++-------------------------- >> fs/ext4/resize.c | 3 +-- >> fs/ext4/super.c | 15 +++++---------- >> fs/ext4/xattr.c | 6 ++---- >> 12 files changed, 43 insertions(+), 70 deletions(-) >> >> diff --git a/fs/ext4/bitmap.c b/fs/ext4/bitmap.c >> index 3285aa5..b610779 100644 >> --- a/fs/ext4/bitmap.c >> +++ b/fs/ext4/bitmap.c >> @@ -24,8 +24,7 @@ int ext4_inode_bitmap_csum_verify(struct super_block *sb, ext4_group_t group, >> __u32 provided, calculated; >> struct ext4_sb_info *sbi = EXT4_SB(sb); >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return 1; >> >> provided = le16_to_cpu(gdp->bg_inode_bitmap_csum_lo); >> @@ -46,8 +45,7 @@ void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group, >> __u32 csum; >> struct ext4_sb_info *sbi = EXT4_SB(sb); >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return; >> >> csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)bh->b_data, sz); >> @@ -65,8 +63,7 @@ int ext4_block_bitmap_csum_verify(struct super_block *sb, ext4_group_t group, >> struct ext4_sb_info *sbi = EXT4_SB(sb); >> int sz = EXT4_CLUSTERS_PER_GROUP(sb) / 8; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return 1; >> >> provided = le16_to_cpu(gdp->bg_block_bitmap_csum_lo); >> @@ -91,8 +88,7 @@ void ext4_block_bitmap_csum_set(struct super_block *sb, ext4_group_t group, >> __u32 csum; >> struct ext4_sb_info *sbi = EXT4_SB(sb); >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return; >> >> csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)bh->b_data, sz); >> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h >> index 012e89b..1483d9c 100644 >> --- a/fs/ext4/ext4.h >> +++ b/fs/ext4/ext4.h >> @@ -2337,6 +2337,14 @@ static inline int ext4_has_group_desc_csum(struct super_block *sb) >> EXT4_FEATURE_RO_COMPAT_METADATA_CSUM); > > Please change the raw metadata_csum flag check in ext4_has_group_desc_csum(), > otherwise we'll still suffer from this bug. No, this one is safe because ext4_group_desc_csum() will check ext4_has_metadata_csum() internally. Other stuff should be safe. So you'll see csum corruption messages which is expected and correct. > >> } >> >> +static inline int ext4_has_metadata_csum(struct super_block *sb) >> +{ >> + WARN_ON_ONCE(EXT4_HAS_RO_COMPAT_FEATURE(sb, >> + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && >> + !EXT4_SB(sb)->s_chksum_driver); > > I was about to protest about not checking the flag and s_chksum_driver... > > Then I realized that tune2fs can set and clear the metadata_csum flag on a > mounted FS. Oh crap. > > So maybe it would be a good idea to check both the driver pointer and the > feature flag just to make sure the user really wants checksumming, though in > the meantime I have a e2fsprogs bug to fix. > > --D > >> + >> + return (EXT4_SB(sb)->s_chksum_driver != NULL); >> +} >> static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es) >> { >> return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) | >> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c >> index c3ed9af..37043d0 100644 >> --- a/fs/ext4/extents.c >> +++ b/fs/ext4/extents.c >> @@ -73,8 +73,7 @@ static int ext4_extent_block_csum_verify(struct inode *inode, >> { >> struct ext4_extent_tail *et; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return 1; >> >> et = find_ext4_extent_tail(eh); >> @@ -88,8 +87,7 @@ static void ext4_extent_block_csum_set(struct inode *inode, >> { >> struct ext4_extent_tail *et; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return; >> >> et = find_ext4_extent_tail(eh); >> diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c >> index 5b87fc3..8012a5d 100644 >> --- a/fs/ext4/ialloc.c >> +++ b/fs/ext4/ialloc.c >> @@ -1011,8 +1011,7 @@ got: >> spin_unlock(&sbi->s_next_gen_lock); >> >> /* Precompute checksum seed for inode metadata */ >> - if (EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { >> + if (ext4_has_metadata_csum(sb)) { >> __u32 csum; >> __le32 inum = cpu_to_le32(inode->i_ino); >> __le32 gen = cpu_to_le32(inode->i_generation); >> diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c >> index 378aadf..3ea6269 100644 >> --- a/fs/ext4/inline.c >> +++ b/fs/ext4/inline.c >> @@ -1128,8 +1128,7 @@ static int ext4_finish_convert_inline_dir(handle_t *handle, >> memcpy((void *)de, buf + EXT4_INLINE_DOTDOT_SIZE, >> inline_size - EXT4_INLINE_DOTDOT_SIZE); >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(inode->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> inode->i_size = inode->i_sb->s_blocksize; >> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c >> index 0dd9150..e9777f9 100644 >> --- a/fs/ext4/inode.c >> +++ b/fs/ext4/inode.c >> @@ -83,8 +83,7 @@ static int ext4_inode_csum_verify(struct inode *inode, struct ext4_inode *raw, >> >> if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != >> cpu_to_le32(EXT4_OS_LINUX) || >> - !EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + !ext4_has_metadata_csum(inode->i_sb)) >> return 1; >> >> provided = le16_to_cpu(raw->i_checksum_lo); >> @@ -105,8 +104,7 @@ static void ext4_inode_csum_set(struct inode *inode, struct ext4_inode *raw, >> >> if (EXT4_SB(inode->i_sb)->s_es->s_creator_os != >> cpu_to_le32(EXT4_OS_LINUX) || >> - !EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + !ext4_has_metadata_csum(inode->i_sb)) >> return; >> >> csum = ext4_inode_csum(inode, raw, ei); >> @@ -3928,8 +3926,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) >> ei->i_extra_isize = 0; >> >> /* Precompute checksum seed for inode metadata */ >> - if (EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { >> + if (ext4_has_metadata_csum(sb)) { >> struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); >> __u32 csum; >> __le32 inum = cpu_to_le32(inode->i_ino); >> diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c >> index 3d5de16..bfda18a 100644 >> --- a/fs/ext4/ioctl.c >> +++ b/fs/ext4/ioctl.c >> @@ -331,8 +331,7 @@ flags_out: >> if (!inode_owner_or_capable(inode)) >> return -EPERM; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { >> + if (ext4_has_metadata_csum(inode->i_sb)) { >> ext4_warning(sb, "Setting inode version is not " >> "supported with metadata_csum enabled."); >> return -ENOTTY; >> diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c >> index 32bce84..8313ca3 100644 >> --- a/fs/ext4/mmp.c >> +++ b/fs/ext4/mmp.c >> @@ -20,8 +20,7 @@ static __le32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp) >> >> static int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp) >> { >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return 1; >> >> return mmp->mmp_checksum == ext4_mmp_csum(sb, mmp); >> @@ -29,8 +28,7 @@ static int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp) >> >> static void ext4_mmp_csum_set(struct super_block *sb, struct mmp_struct *mmp) >> { >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return; >> >> mmp->mmp_checksum = ext4_mmp_csum(sb, mmp); >> diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c >> index 7037ecf..61756f9 100644 >> --- a/fs/ext4/namei.c >> +++ b/fs/ext4/namei.c >> @@ -124,8 +124,7 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode, >> "directory leaf block found instead of index block"); >> return ERR_PTR(-EIO); >> } >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) || >> + if (!ext4_has_metadata_csum(inode->i_sb) || >> buffer_verified(bh)) >> return bh; >> >> @@ -338,8 +337,7 @@ int ext4_dirent_csum_verify(struct inode *inode, struct ext4_dir_entry *dirent) >> { >> struct ext4_dir_entry_tail *t; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return 1; >> >> t = get_dirent_tail(inode, dirent); >> @@ -360,8 +358,7 @@ static void ext4_dirent_csum_set(struct inode *inode, >> { >> struct ext4_dir_entry_tail *t; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return; >> >> t = get_dirent_tail(inode, dirent); >> @@ -436,8 +433,7 @@ static int ext4_dx_csum_verify(struct inode *inode, >> struct dx_tail *t; >> int count_offset, limit, count; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return 1; >> >> c = get_dx_countlimit(inode, dirent, &count_offset); >> @@ -466,8 +462,7 @@ static void ext4_dx_csum_set(struct inode *inode, struct ext4_dir_entry *dirent) >> struct dx_tail *t; >> int count_offset, limit, count; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return; >> >> c = get_dx_countlimit(inode, dirent, &count_offset); >> @@ -555,8 +550,7 @@ static inline unsigned dx_root_limit(struct inode *dir, unsigned infosize) >> unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(1) - >> EXT4_DIR_REC_LEN(2) - infosize; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(dir->i_sb)) >> entry_space -= sizeof(struct dx_tail); >> return entry_space / sizeof(struct dx_entry); >> } >> @@ -565,8 +559,7 @@ static inline unsigned dx_node_limit(struct inode *dir) >> { >> unsigned entry_space = dir->i_sb->s_blocksize - EXT4_DIR_REC_LEN(0); >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(dir->i_sb)) >> entry_space -= sizeof(struct dx_tail); >> return entry_space / sizeof(struct dx_entry); >> } >> @@ -1524,8 +1517,7 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir, >> int csum_size = 0; >> int err = 0, i; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(dir->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> bh2 = ext4_append(handle, dir, &newblock); >> @@ -1691,8 +1683,7 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry, >> int csum_size = 0; >> int err; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(inode->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> if (!de) { >> @@ -1759,8 +1750,7 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry, >> struct fake_dirent *fde; >> int csum_size = 0; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(inode->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> blocksize = dir->i_sb->s_blocksize; >> @@ -1877,8 +1867,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, >> ext4_lblk_t block, blocks; >> int csum_size = 0; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(inode->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> sb = dir->i_sb; >> @@ -2142,8 +2131,7 @@ static int ext4_delete_entry(handle_t *handle, >> return err; >> } >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(dir->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> BUFFER_TRACE(bh, "get_write_access"); >> @@ -2362,8 +2350,7 @@ static int ext4_init_new_dir(handle_t *handle, struct inode *dir, >> int csum_size = 0; >> int err; >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(dir->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(dir->i_sb)) >> csum_size = sizeof(struct ext4_dir_entry_tail); >> >> if (ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) { >> diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c >> index bb0e80f..d5afb0a 100644 >> --- a/fs/ext4/resize.c >> +++ b/fs/ext4/resize.c >> @@ -1210,8 +1210,7 @@ static int ext4_set_bitmap_checksums(struct super_block *sb, >> { >> struct buffer_head *bh; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return 0; >> >> bh = ext4_get_bitmap(sb, group_data->inode_bitmap); >> diff --git a/fs/ext4/super.c b/fs/ext4/super.c >> index a0811cc..5afe42d 100644 >> --- a/fs/ext4/super.c >> +++ b/fs/ext4/super.c >> @@ -140,8 +140,7 @@ static __le32 ext4_superblock_csum(struct super_block *sb, >> static int ext4_superblock_csum_verify(struct super_block *sb, >> struct ext4_super_block *es) >> { >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return 1; >> >> return es->s_checksum == ext4_superblock_csum(sb, es); >> @@ -151,8 +150,7 @@ void ext4_superblock_csum_set(struct super_block *sb) >> { >> struct ext4_super_block *es = EXT4_SB(sb)->s_es; >> >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(sb)) >> return; >> >> es->s_checksum = ext4_superblock_csum(sb, es); >> @@ -1989,8 +1987,7 @@ static __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 block_group, >> __u16 crc = 0; >> __le32 le_group = cpu_to_le32(block_group); >> >> - if ((sbi->s_es->s_feature_ro_compat & >> - cpu_to_le32(EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))) { >> + if (ext4_has_metadata_csum(sbi->s_sb)) { >> /* Use new metadata_csum algorithm */ >> __le16 save_csum; >> __u32 csum32; >> @@ -3199,8 +3196,7 @@ static int set_journal_csum_feature_set(struct super_block *sb) >> int compat, incompat; >> struct ext4_sb_info *sbi = EXT4_SB(sb); >> >> - if (EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { >> + if (ext4_has_metadata_csum(sb)) { >> /* journal checksum v3 */ >> compat = 0; >> incompat = JBD2_FEATURE_INCOMPAT_CSUM_V3; >> @@ -3508,8 +3504,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) >> } >> >> /* Precompute checksum seed for all metadata */ >> - if (EXT4_HAS_RO_COMPAT_FEATURE(sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (ext4_has_metadata_csum(sb)) >> sbi->s_csum_seed = ext4_chksum(sbi, ~0, es->s_uuid, >> sizeof(es->s_uuid)); >> >> diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c >> index 42823ab..1e09fc7 100644 >> --- a/fs/ext4/xattr.c >> +++ b/fs/ext4/xattr.c >> @@ -142,8 +142,7 @@ static int ext4_xattr_block_csum_verify(struct inode *inode, >> sector_t block_nr, >> struct ext4_xattr_header *hdr) >> { >> - if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && >> + if (ext4_has_metadata_csum(inode->i_sb) && >> (hdr->h_checksum != ext4_xattr_block_csum(inode, block_nr, hdr))) >> return 0; >> return 1; >> @@ -153,8 +152,7 @@ static void ext4_xattr_block_csum_set(struct inode *inode, >> sector_t block_nr, >> struct ext4_xattr_header *hdr) >> { >> - if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, >> - EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) >> + if (!ext4_has_metadata_csum(inode->i_sb)) >> return; >> >> hdr->h_checksum = ext4_xattr_block_csum(inode, block_nr, hdr); >> -- >> 1.7.1 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html
Attachment:
pgpN1eGX09CVd.pgp
Description: PGP signature
