diff options
| -rw-r--r-- | fs/ext4/super.c | 72 | ||||
| -rw-r--r-- | include/linux/ext4_fs_sb.h | 1 |
2 files changed, 73 insertions, 0 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index fc3eb79faa49..0e829cc8a18a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -596,9 +596,80 @@ static inline void ext4_show_quota_options(struct seq_file *seq, struct super_bl #endif } +/* + * Show an option if + * - it's set to a non-default value OR + * - if the per-sb default is different from the global default + */ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) { struct super_block *sb = vfs->mnt_sb; + struct ext4_sb_info *sbi = EXT4_SB(sb); + struct ext4_super_block *es = sbi->s_es; + unsigned long def_mount_opts; + + def_mount_opts = le32_to_cpu(es->s_default_mount_opts); + + if (sbi->s_sb_block != 1) + seq_printf(seq, ",sb=%llu", sbi->s_sb_block); + if (test_opt(sb, MINIX_DF)) + seq_puts(seq, ",minixdf"); + if (test_opt(sb, GRPID)) + seq_puts(seq, ",grpid"); + if (!test_opt(sb, GRPID) && (def_mount_opts & EXT4_DEFM_BSDGROUPS)) + seq_puts(seq, ",nogrpid"); + if (sbi->s_resuid != EXT4_DEF_RESUID || + le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID) { + seq_printf(seq, ",resuid=%u", sbi->s_resuid); + } + if (sbi->s_resgid != EXT4_DEF_RESGID || + le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID) { + seq_printf(seq, ",resgid=%u", sbi->s_resgid); + } + if (test_opt(sb, ERRORS_CONT)) { + int def_errors = le16_to_cpu(es->s_errors); + + if (def_errors == EXT4_ERRORS_PANIC || + def_errors == EXT4_ERRORS_RO) { + seq_puts(seq, ",errors=continue"); + } + } + if (test_opt(sb, ERRORS_RO)) + seq_puts(seq, ",errors=remount-ro"); + if (test_opt(sb, ERRORS_PANIC)) + seq_puts(seq, ",errors=panic"); + if (test_opt(sb, NO_UID32)) + seq_puts(seq, ",nouid32"); + if (test_opt(sb, DEBUG)) + seq_puts(seq, ",debug"); + if (test_opt(sb, OLDALLOC)) + seq_puts(seq, ",oldalloc"); +#ifdef CONFIG_EXT4_FS_XATTR + if (test_opt(sb, XATTR_USER)) + seq_puts(seq, ",user_xattr"); + if (!test_opt(sb, XATTR_USER) && + (def_mount_opts & EXT4_DEFM_XATTR_USER)) { + seq_puts(seq, ",nouser_xattr"); + } +#endif +#ifdef CONFIG_EXT4_FS_POSIX_ACL + if (test_opt(sb, POSIX_ACL)) + seq_puts(seq, ",acl"); + if (!test_opt(sb, POSIX_ACL) && (def_mount_opts & EXT4_DEFM_ACL)) + seq_puts(seq, ",noacl"); +#endif + if (!test_opt(sb, RESERVATION)) + seq_puts(seq, ",noreservation"); + if (sbi->s_commit_interval) { + seq_printf(seq, ",commit=%u", + (unsigned) (sbi->s_commit_interval / HZ)); + } + if (test_opt(sb, BARRIER)) + seq_puts(seq, ",barrier=1"); + if (test_opt(sb, NOBH)) + seq_puts(seq, ",nobh"); + if (!test_opt(sb, EXTENTS)) + seq_puts(seq, ",noextents"); if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) seq_puts(seq, ",data=journal"); @@ -1486,6 +1557,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) sbi->s_mount_opt = 0; sbi->s_resuid = EXT4_DEF_RESUID; sbi->s_resgid = EXT4_DEF_RESGID; + sbi->s_sb_block = sb_block; unlock_kernel(); diff --git a/include/linux/ext4_fs_sb.h b/include/linux/ext4_fs_sb.h index 1b2ffee12be9..0a8e47d47c91 100644 --- a/include/linux/ext4_fs_sb.h +++ b/include/linux/ext4_fs_sb.h @@ -45,6 +45,7 @@ struct ext4_sb_info { struct ext4_super_block * s_es; /* Pointer to the super block in the buffer */ struct buffer_head ** s_group_desc; unsigned long s_mount_opt; + ext4_fsblk_t s_sb_block; uid_t s_resuid; gid_t s_resgid; unsigned short s_mount_state; |