ceph: add inline data to pagecache

Request reply and cap message can contain inline data. add inline data
to the page cache if there is Fc cap.

Signed-off-by: Yan, Zheng <zyan@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 72607c17e6fd..feea6a8f88ae 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -387,6 +387,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
         spin_lock_init(&ci->i_ceph_lock);
 
         ci->i_version = 0;
+        ci->i_inline_version = 0;
         ci->i_time_warp_seq = 0;
         ci->i_ceph_flags = 0;
         ci->i_ordered_count = 0;
@@ -676,6 +677,7 @@ static int fill_inode(struct inode *inode,
         bool wake = false;
         bool queue_trunc = false;
         bool new_version = false;
+        bool fill_inline = false;
 
         dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
              inode, ceph_vinop(inode), le64_to_cpu(info->version),
@@ -875,8 +877,22 @@ static int fill_inode(struct inode *inode,
                            ceph_vinop(inode));
                 __ceph_get_fmode(ci, cap_fmode);
         }
+
+        if (iinfo->inline_version > 0 &&
+            iinfo->inline_version >= ci->i_inline_version) {
+                int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
+                ci->i_inline_version = iinfo->inline_version;
+                if (ci->i_inline_version != CEPH_INLINE_NONE &&
+                    (le32_to_cpu(info->cap.caps) & cache_caps))
+                        fill_inline = true;
+        }
+
         spin_unlock(&ci->i_ceph_lock);
 
+        if (fill_inline)
+                ceph_fill_inline_data(inode, NULL,
+                                      iinfo->inline_data, iinfo->inline_len);
+
         if (wake)
                 wake_up_all(&ci->i_cap_wq);