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btrfs: Introduce new mount option to disable tree log replay

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Introduce a new mount option "nologreplay" to co-operate with "ro" mount
option to get real readonly mount, like "norecovery" in ext* and xfs.

Since the new parse_options() need to check new flags at remount time,
so add a new parameter for parse_options().

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Tested-by: Austin S. Hemmelgarn <ahferroin7@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo
2016-01-19 10:23:03 +08:00
committed by David Sterba
parent 8dcddfa048
commit 96da09192c
4 changed files with 40 additions and 7 deletions
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4
fs/btrfs/ctree.h
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@@ -2250,6 +2250,7 @@ struct btrfs_ioctl_defrag_range_args {
#define BTRFS_MOUNT_FRAGMENT_DATA (1 << 24)
#define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25)
#define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26)
#define BTRFS_MOUNT_NOLOGREPLAY (1 << 27)
#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
#define BTRFS_DEFAULT_MAX_INLINE (8192)
@@ -4151,7 +4152,8 @@ void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);
ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
/* super.c */
int btrfs_parse_options(struct btrfs_root *root, char *options);
int btrfs_parse_options(struct btrfs_root *root, char *options,
unsigned long new_flags);
int btrfs_sync_fs(struct super_block *sb, int wait);
#ifdef CONFIG_PRINTK