diff options
| author | Gang He <ghe@suse.com> | 2018-01-31 16:15:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 17:18:35 -0800 |
| commit | 4882abebccb58d68056462b66cea0d7f16169c39 (patch) | |
| tree | 5d6a2c2947f447e246dd349d4f170fb853715bf5 /fs/ocfs2/dlmglue.h | |
| parent | 71a36944042b7d9dd71f6a5d1c5ea1c2353b5d42 (diff) | |
| download | linux-4882abebccb58d68056462b66cea0d7f16169c39.tar.gz linux-4882abebccb58d68056462b66cea0d7f16169c39.tar.bz2 linux-4882abebccb58d68056462b66cea0d7f16169c39.zip | |
ocfs2: add trimfs dlm lock resource
Introduce a new dlm lock resource, which will be used to communicate
during fstrimming of an ocfs2 device from cluster nodes.
Link: http://lkml.kernel.org/r/1513228484-2084-1-git-send-email-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Changwei Ge <ge.changwei@h3c.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/dlmglue.h')
| -rw-r--r-- | fs/ocfs2/dlmglue.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/ocfs2/dlmglue.h b/fs/ocfs2/dlmglue.h index a7fc18ba0dc1..2253688b0107 100644 --- a/fs/ocfs2/dlmglue.h +++ b/fs/ocfs2/dlmglue.h @@ -70,6 +70,29 @@ struct ocfs2_orphan_scan_lvb { __be32 lvb_os_seqno; }; +#define OCFS2_TRIMFS_LVB_VERSION 1 + +struct ocfs2_trim_fs_lvb { + __u8 lvb_version; + __u8 lvb_success; + __u8 lvb_reserved[2]; + __be32 lvb_nodenum; + __be64 lvb_start; + __be64 lvb_len; + __be64 lvb_minlen; + __be64 lvb_trimlen; +}; + +struct ocfs2_trim_fs_info { + u8 tf_valid; /* lvb is valid, or not */ + u8 tf_success; /* trim is successful, or not */ + u32 tf_nodenum; /* osb node number */ + u64 tf_start; /* trim start offset in clusters */ + u64 tf_len; /* trim end offset in clusters */ + u64 tf_minlen; /* trim minimum contiguous free clusters */ + u64 tf_trimlen; /* trimmed length in bytes */ +}; + struct ocfs2_lock_holder { struct list_head oh_list; struct pid *oh_owner_pid; @@ -153,6 +176,12 @@ int ocfs2_rename_lock(struct ocfs2_super *osb); void ocfs2_rename_unlock(struct ocfs2_super *osb); int ocfs2_nfs_sync_lock(struct ocfs2_super *osb, int ex); void ocfs2_nfs_sync_unlock(struct ocfs2_super *osb, int ex); +void ocfs2_trim_fs_lock_res_init(struct ocfs2_super *osb); +void ocfs2_trim_fs_lock_res_uninit(struct ocfs2_super *osb); +int ocfs2_trim_fs_lock(struct ocfs2_super *osb, + struct ocfs2_trim_fs_info *info, int trylock); +void ocfs2_trim_fs_unlock(struct ocfs2_super *osb, + struct ocfs2_trim_fs_info *info); int ocfs2_dentry_lock(struct dentry *dentry, int ex); void ocfs2_dentry_unlock(struct dentry *dentry, int ex); int ocfs2_file_lock(struct file *file, int ex, int trylock); |