diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/ext4.h | 9 | ||||
| -rw-r--r-- | fs/ext4/super.c | 29 |
2 files changed, 30 insertions, 8 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 9ca3637eca5..ed14e1db083 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1025,8 +1025,9 @@ struct ext4_super_block { __le32 s_last_error_line; /* line number where error happened */ __le64 s_last_error_block; /* block involved of last error */ __u8 s_last_error_func[32]; /* function where the error happened */ -#define EXT4_S_ERR_END offsetof(struct ext4_super_block, s_reserved) - __le32 s_reserved[128]; /* Padding to the end of the block */ +#define EXT4_S_ERR_END offsetof(struct ext4_super_block, s_mount_opts) + __u8 s_mount_opts[64]; + __le32 s_reserved[112]; /* Padding to the end of the block */ }; #define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START) @@ -1341,6 +1342,10 @@ EXT4_INODE_BIT_FNS(state, state_flags) #define EXT4_DEFM_JMODE_DATA 0x0020 #define EXT4_DEFM_JMODE_ORDERED 0x0040 #define EXT4_DEFM_JMODE_WBACK 0x0060 +#define EXT4_DEFM_NOBARRIER 0x0100 +#define EXT4_DEFM_BLOCK_VALIDITY 0x0200 +#define EXT4_DEFM_DISCARD 0x0400 +#define EXT4_DEFM_NODELALLOC 0x0800 /* * Default journal batch times diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 3e3f6484c22..3fd65eb66cc 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1003,10 +1003,10 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_puts(seq, ",journal_checksum"); if (test_opt(sb, I_VERSION)) seq_puts(seq, ",i_version"); - if (!test_opt(sb, DELALLOC)) + if (!test_opt(sb, DELALLOC) && + !(def_mount_opts & EXT4_DEFM_NODELALLOC)) seq_puts(seq, ",nodelalloc"); - if (sbi->s_stripe) seq_printf(seq, ",stripe=%lu", sbi->s_stripe); /* @@ -1030,7 +1030,7 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) if (test_opt(sb, NO_AUTO_DA_ALLOC)) seq_puts(seq, ",noauto_da_alloc"); - if (test_opt(sb, DISCARD)) + if (test_opt(sb, DISCARD) && !(def_mount_opts & EXT4_DEFM_DISCARD)) seq_puts(seq, ",discard"); if (test_opt(sb, NOLOAD)) @@ -1039,6 +1039,10 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs) if (test_opt(sb, DIOREAD_NOLOCK)) seq_puts(seq, ",dioread_nolock"); + if (test_opt(sb, BLOCK_VALIDITY) && + !(def_mount_opts & EXT4_DEFM_BLOCK_VALIDITY)) + seq_puts(seq, ",block_validity"); + ext4_show_quota_options(seq, sb); return 0; @@ -2655,6 +2659,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) set_opt(sbi->s_mount_opt, ERRORS_CONT); else set_opt(sbi->s_mount_opt, ERRORS_RO); + if (def_mount_opts & EXT4_DEFM_BLOCK_VALIDITY) + set_opt(sbi->s_mount_opt, BLOCK_VALIDITY); + if (def_mount_opts & EXT4_DEFM_DISCARD) + set_opt(sbi->s_mount_opt, DISCARD); sbi->s_resuid = le16_to_cpu(es->s_def_resuid); sbi->s_resgid = le16_to_cpu(es->s_def_resgid); @@ -2662,15 +2670,23 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME; sbi->s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME; - set_opt(sbi->s_mount_opt, BARRIER); + if ((def_mount_opts & EXT4_DEFM_NOBARRIER) == 0) + set_opt(sbi->s_mount_opt, BARRIER); /* * enable delayed allocation by default * Use -o nodelalloc to turn it off */ - if (!IS_EXT3_SB(sb)) + if (!IS_EXT3_SB(sb) && + ((def_mount_opts & EXT4_DEFM_NODELALLOC) == 0)) set_opt(sbi->s_mount_opt, DELALLOC); + if (!parse_options((char *) sbi->s_es->s_mount_opts, sb, + &journal_devnum, &journal_ioprio, NULL, 0)) { + ext4_msg(sb, KERN_WARNING, + "failed to parse options in superblock: %s", + sbi->s_es->s_mount_opts); + } if (!parse_options((char *) data, sb, &journal_devnum, &journal_ioprio, NULL, 0)) goto failed_mount; @@ -3141,7 +3157,8 @@ no_journal: descr = "out journal"; ext4_msg(sb, KERN_INFO, "mounted filesystem with%s. " - "Opts: %s", descr, orig_data); + "Opts: %s%s%s", descr, sbi->s_es->s_mount_opts, + *sbi->s_es->s_mount_opts ? "; " : "", orig_data); init_timer(&sbi->s_err_report); sbi->s_err_report.function = print_daily_error_info; |