ext4: Regularize mount options
Add support for using the mount options "barrier" and "nobarrier", and
"auto_da_alloc" and "noauto_da_alloc", which is more consistent than
"barrier=<0|1>" or "auto_da_alloc=<0|1>". Most other ext3/ext4 mount
options use the foo/nofoo naming convention. We allow the old forms
of these mount options for backwards compatibility.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 45d07cf..9987bba 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -867,7 +867,7 @@
seq_puts(seq, ",data_err=abort");
if (test_opt(sb, NO_AUTO_DA_ALLOC))
- seq_puts(seq, ",auto_da_alloc=0");
+ seq_puts(seq, ",noauto_da_alloc");
ext4_show_quota_options(seq, sb);
return 0;
@@ -1018,7 +1018,7 @@
Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, Opt_err_ro,
Opt_nouid32, Opt_debug, Opt_oldalloc, Opt_orlov,
Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl,
- Opt_auto_da_alloc, Opt_noload, Opt_nobh, Opt_bh,
+ Opt_auto_da_alloc, Opt_noauto_da_alloc, Opt_noload, Opt_nobh, Opt_bh,
Opt_commit, Opt_min_batch_time, Opt_max_batch_time,
Opt_journal_update, Opt_journal_dev,
Opt_journal_checksum, Opt_journal_async_commit,
@@ -1026,8 +1026,8 @@
Opt_data_err_abort, Opt_data_err_ignore,
Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
- Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
- Opt_grpquota, Opt_i_version,
+ Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err, Opt_resize,
+ Opt_usrquota, Opt_grpquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc,
Opt_inode_readahead_blks, Opt_journal_ioprio
};
@@ -1080,6 +1080,8 @@
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
{Opt_barrier, "barrier=%u"},
+ {Opt_barrier, "barrier"},
+ {Opt_nobarrier, "nobarrier"},
{Opt_i_version, "i_version"},
{Opt_stripe, "stripe=%u"},
{Opt_resize, "resize"},
@@ -1088,6 +1090,8 @@
{Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
{Opt_journal_ioprio, "journal_ioprio=%u"},
{Opt_auto_da_alloc, "auto_da_alloc=%u"},
+ {Opt_auto_da_alloc, "auto_da_alloc"},
+ {Opt_noauto_da_alloc, "noauto_da_alloc"},
{Opt_err, NULL},
};
@@ -1422,9 +1426,14 @@
case Opt_abort:
set_opt(sbi->s_mount_opt, ABORT);
break;
+ case Opt_nobarrier:
+ clear_opt(sbi->s_mount_opt, BARRIER);
+ break;
case Opt_barrier:
- if (match_int(&args[0], &option))
- return 0;
+ if (match_int(&args[0], &option)) {
+ set_opt(sbi->s_mount_opt, BARRIER);
+ break;
+ }
if (option)
set_opt(sbi->s_mount_opt, BARRIER);
else
@@ -1485,9 +1494,14 @@
*journal_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE,
option);
break;
+ case Opt_noauto_da_alloc:
+ set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
+ break;
case Opt_auto_da_alloc:
- if (match_int(&args[0], &option))
- return 0;
+ if (match_int(&args[0], &option)) {
+ clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
+ break;
+ }
if (option)
clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
else