ceph: perform lazy reads when file mode and caps permit

If the file mode is marked as "lazy," perform cached/buffered reads when
the caps permit it.  Adjust the rdcache_gen and invalidation logic
accordingly so that we manage our cache based on the FILE_CACHE -or-
FILE_LAZYIO cap bits.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index d9c60b84949a..e00797eed29c 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -552,7 +552,7 @@ static void writepages_finish(struct ceph_osd_request *req,
                  * page truncation thread, possibly losing some data that
                  * raced its way in
                  */
-                if ((issued & CEPH_CAP_FILE_CACHE) == 0)
+                if ((issued & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0)
                         generic_error_remove_page(inode->i_mapping, page);
 
                 unlock_page(page);