[PATCH] ceph: show max caps in debugfs caps file

[Yanhu Cao]

        before
        ------
        total           1026
        avail           1024
        used            2
        reserved        0
        min             1024

        after
        ------
        total           1026
        avail           1024
        used            2
        max             2048
        reserved        0
        min             1024

Signed-off-by: Yanhu Cao <gmayy...@gmail.com>
---
 fs/ceph/caps.c    | 6 ++++--
 fs/ceph/debugfs.c | 7 ++++---
 fs/ceph/super.h   | 2 +-
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 5f3aa4d607de..e2c759a2ef35 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -404,8 +404,8 @@ void ceph_put_cap(struct ceph_mds_client *mdsc, struct 
ceph_cap *cap)
 }
 
 void ceph_reservation_status(struct ceph_fs_client *fsc,
-                            int *total, int *avail, int *used, int *reserved,
-                            int *min)
+                            int *total, int *avail, int *used, int *max,
+                            int *reserved, int *min)
 {
        struct ceph_mds_client *mdsc = fsc->mdsc;
 
@@ -417,6 +417,8 @@ void ceph_reservation_status(struct ceph_fs_client *fsc,
                *avail = mdsc->caps_avail_count;
        if (used)
                *used = mdsc->caps_use_count;
+       if (max)
+               *max = mdsc->caps_use_max;
        if (reserved)
                *reserved = mdsc->caps_reserve_count;
        if (min)
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 481ac97b4d25..942004376588 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -138,16 +138,17 @@ static int caps_show(struct seq_file *s, void *p)
 {
        struct ceph_fs_client *fsc = s->private;
        struct ceph_mds_client *mdsc = fsc->mdsc;
-       int total, avail, used, reserved, min, i;
+       int total, avail, used, max, reserved, min, i;
        struct cap_wait *cw;
 
-       ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
+       ceph_reservation_status(fsc, &total, &avail, &used, &max,
+                               &reserved, &min);
        seq_printf(s, "total\t\t%d\n"
                   "avail\t\t%d\n"
                   "used\t\t%d\n"
                   "reserved\t%d\n"
                   "min\t\t%d\n\n",
-                  total, avail, used, reserved, min);
+                  total, avail, used, max, reserved, min);
        seq_printf(s, "ino                issued           implemented\n");
        seq_printf(s, "-----------------------------------------------\n");
 
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 60aac3aee055..79aa42d9336c 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -700,7 +700,7 @@ extern void ceph_unreserve_caps(struct ceph_mds_client 
*mdsc,
                               struct ceph_cap_reservation *ctx);
 extern void ceph_reservation_status(struct ceph_fs_client *client,
                                    int *total, int *avail, int *used,
-                                   int *reserved, int *min);
+                                   int *max, int *reserved, int *min);
 
 
 
-- 
2.24.2 (Apple Git-127)