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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 03:28:01 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 10:05:52 +0900
commit0234576d041b9b2cc7043691ea61d2c2ca597aaa (patch)
tree1fd5f397cf0a7cb010a3e383a715438e64582b65 /include/linux/nilfs2_fs.h
parenta057d2c01161444c48b12a60351ae6c7135f6e61 (diff)
downloadop-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.h2
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 */
/**
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