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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-20 03:28:01 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-20 10:05:52 +0900 |
| commit | 0234576d041b9b2cc7043691ea61d2c2ca597aaa (patch) | |
| tree | 1fd5f397cf0a7cb010a3e383a715438e64582b65 /include/linux/nilfs2_fs.h | |
| parent | a057d2c01161444c48b12a60351ae6c7135f6e61 (diff) | |
| download | op-kernel-dev-0234576d041b9b2cc7043691ea61d2c2ca597aaa.zip op-kernel-dev-0234576d041b9b2cc7043691ea61d2c2ca597aaa.tar.gz | |
nilfs2: add norecovery mount option
This adds "norecovery" mount option which disables temporal write
access to read-only mounts or snapshots during mount/recovery.
Without this option, write access will be even performed for those
types of mounts; the temporal write access is needed to mount root
file system read-only after an unclean shutdown.
This option will be helpful when user wants to prevent any write
access to the device.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Eric Sandeen <sandeen@redhat.com>
Diffstat (limited to 'include/linux/nilfs2_fs.h')
| -rw-r--r-- | include/linux/nilfs2_fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index 72289d2..3fe02cf 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -151,6 +151,8 @@ struct nilfs_super_root { #define NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */ #define NILFS_MOUNT_STRICT_ORDER 0x2000 /* Apply strict in-order semantics also for data */ +#define NILFS_MOUNT_NORECOVERY 0x4000 /* Disable write access during + mount-time recovery */ /** |
