ceph: support getting ceph.dir.pin vxattr
Link: http://tracker.ceph.com/issues/37576
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 7f82cef..e6012de 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -877,6 +877,7 @@
ci->i_rbytes = le64_to_cpu(info->rbytes);
ci->i_rfiles = le64_to_cpu(info->rfiles);
ci->i_rsubdirs = le64_to_cpu(info->rsubdirs);
+ ci->i_dir_pin = iinfo->dir_pin;
ceph_decode_timespec64(&ci->i_rctime, &info->rctime);
}
}
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index e87544e..ddfb6a4 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -157,6 +157,13 @@
ceph_decode_64_safe(p, end, change_attr, bad);
}
+ /* dir pin */
+ if (struct_v >= 2) {
+ ceph_decode_32_safe(p, end, info->dir_pin, bad);
+ } else {
+ info->dir_pin = -ENODATA;
+ }
+
*p = end;
} else {
if (features & CEPH_FEATURE_MDS_INLINE_DATA) {
@@ -187,6 +194,8 @@
*p += info->pool_ns_len;
}
}
+
+ info->dir_pin = -ENODATA;
}
return 0;
bad:
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 0919aac..af3b25e 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -68,6 +68,7 @@
char *pool_ns_data;
u64 max_bytes;
u64 max_files;
+ s32 dir_pin;
};
struct ceph_mds_reply_dir_entry {
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 5b15ae9..df44a77 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -318,6 +318,8 @@
/* quotas */
u64 i_max_bytes, i_max_files;
+ s32 i_dir_pin;
+
struct rb_root i_fragtree;
int i_fragtree_nsplits;
struct mutex i_fragtree_mutex;
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 316f6ad..0cc42c88 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -228,8 +228,19 @@
ci->i_rctime.tv_nsec);
}
-/* quotas */
+/* dir pin */
+static bool ceph_vxattrcb_dir_pin_exists(struct ceph_inode_info *ci)
+{
+ return ci->i_dir_pin != -ENODATA;
+}
+static size_t ceph_vxattrcb_dir_pin(struct ceph_inode_info *ci, char *val,
+ size_t size)
+{
+ return snprintf(val, size, "%d", (int)ci->i_dir_pin);
+}
+
+/* quotas */
static bool ceph_vxattrcb_quota_exists(struct ceph_inode_info *ci)
{
bool ret = false;
@@ -315,6 +326,13 @@
XATTR_RSTAT_FIELD(dir, rbytes),
XATTR_RSTAT_FIELD(dir, rctime),
{
+ .name = "ceph.dir.pin",
+ .name_size = sizeof("ceph.dir_pin"),
+ .getxattr_cb = ceph_vxattrcb_dir_pin,
+ .exists_cb = ceph_vxattrcb_dir_pin_exists,
+ .flags = VXATTR_FLAG_HIDDEN,
+ },
+ {
.name = "ceph.quota",
.name_size = sizeof("ceph.quota"),
.getxattr_cb = ceph_vxattrcb_quota,
