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| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2015-10-18 23:50:26 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2015-10-18 23:50:26 -0400 |
| commit | 1e381f60dad913625956ed3a9c5714d9fc7e865f (patch) | |
| tree | 0087057e6ef3610cc5e1f197d8754e644d803567 /fs/ext4/ext4.h | |
| parent | c93cf2d75779d73376e84e2547de1304113d3f1c (diff) | |
ext4: do not allow journal_opts for fs w/o journal
It is appeared that we can pass journal related mount options and such options
be shown in /proc/mounts
Example:
#mkfs.ext4 -F /dev/vdb
#tune2fs -O ^has_journal /dev/vdb
#mount /dev/vdb /mnt/ -ocommit=20,journal_async_commit
#cat /proc/mounts | grep /mnt
/dev/vdb /mnt ext4 rw,relatime,journal_checksum,journal_async_commit,commit=20,data=ordered 0 0
But options:"journal_checksum,journal_async_commit,commit=20,data=ordered" has
nothing with reality because there is no journal at all.
This patch disallow following options for journalless configurations:
- journal_checksum
- journal_async_commit
- commit=%ld
- data={writeback,ordered,journal}
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index b1d04aa724be..750063f7a50c 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1023,6 +1023,9 @@ struct ext4_inode_info { #define EXT4_MOUNT2_HURD_COMPAT 0x00000004 /* Support HURD-castrated file systems */ +#define EXT4_MOUNT2_EXPLICIT_JOURNAL_CHECKSUM 0x00000008 /* User explicitly + specified journal checksum */ + #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \ ~EXT4_MOUNT_##opt #define set_opt(sb, opt) EXT4_SB(sb)->s_mount_opt |= \ |