[PATCH 2/3] ceph: update atime after read-operation.

[majianpeng]

Now ceph don't support updating atime after read-operation if the open
mode is CEPH_CAP_FILE_RD.There are two reasons:
1:in client of fs,it don't set dirty cap of CEPH_CAP_FILE_RD.
2:in mds,it only update the atime if the condition
"dirty & (CEPH_CAP_FILE_EXCL|CEPH_CAP_FILE_WR) is true.
But if we can read, we can update atime. This patch only modify client to
support.

Signed-off-by: Jianpeng Ma <majianp...@gmail.com>
---
 fs/ceph/file.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 87df15a..9daea70 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -672,6 +672,15 @@ again:
 out:
        dout("aio_read %p %llx.%llx dropping cap refs on %s = %d\n",
             inode, ceph_vinop(inode), ceph_cap_string(got), (int)ret);
+
+       if (ret >= 0) {
+               int dirty;
+               spin_lock(&ci->i_ceph_lock);
+               dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_RD);
+               spin_unlock(&ci->i_ceph_lock);
+               if (dirty)
+                       __mark_inode_dirty(inode, dirty);
+       }
        ceph_put_cap_refs(ci, got);
 
        if (checkeof && ret >= 0) {
-- 
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