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authorGang He <ghe@suse.com>2018-02-01 01:15:10 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-01 02:18:35 +0100
commit4882abebccb58d68056462b66cea0d7f16169c39 (patch)
tree5d6a2c2947f447e246dd349d4f170fb853715bf5 /fs/ocfs2/dlmglue.h
parentocfs2: try to reuse extent block in dealloc without meta_alloc (diff)
downloadlinux-4882abebccb58d68056462b66cea0d7f16169c39.tar.xz
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.h29
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);