Add new mount flag EXT4_MOUNT_INIT_INODE_TABLE and add new pair of mount
options (inititable/noinititable). When mounted with inititable file
system should try to initialize uninitialized inode tables, otherwise it
should prevent initializing inode tables.
For now, default is noinittable.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
---
fs/ext4/ext4.h | 1 +
fs/ext4/super.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 19a4de5..dbd6760 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -885,6 +885,7 @@ struct ext4_inode_info {
#define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */
#define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */
#define EXT4_MOUNT_DISCARD 0x40000000 /* Issue DISCARD requests */
+#define EXT4_MOUNT_INIT_INODE_TABLE 0x80000000 /* Initialize uninitialized itables */
#define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt
#define set_opt(o, opt) o |= EXT4_MOUNT_##opt
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4e8983a..515e306 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -986,6 +986,9 @@ 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, INIT_INODE_TABLE))
+ seq_puts(seq, ",init_inode_table");
+
ext4_show_quota_options(seq, sb);
return 0;
@@ -1161,6 +1164,7 @@ enum {
Opt_inode_readahead_blks, Opt_journal_ioprio,
Opt_dioread_nolock, Opt_dioread_lock,
Opt_discard, Opt_nodiscard,
+ Opt_init_inode_table, Opt_noinit_inode_table,
};
static const match_table_t tokens = {
@@ -1231,6 +1235,8 @@ static const match_table_t tokens = {
{Opt_dioread_lock, "dioread_lock"},
{Opt_discard, "discard"},
{Opt_nodiscard, "nodiscard"},
+ {Opt_init_inode_table, "inititable"},
+ {Opt_noinit_inode_table, "noinititable"},
{Opt_err, NULL},
};
@@ -1699,6 +1705,12 @@ set_qf_format:
case Opt_dioread_lock:
clear_opt(sbi->s_mount_opt, DIOREAD_NOLOCK);
break;
+ case Opt_init_inode_table:
+ set_opt(sbi->s_mount_opt, INIT_INODE_TABLE);
+ break;
+ case Opt_noinit_inode_table:
+ clear_opt(sbi->s_mount_opt, INIT_INODE_TABLE);
+ break;
default:
ext4_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" "
--
1.7.2.1
--
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
