ceph: specify max_bytes on readdir replies
Specify max bytes in request to bound size of reply. Add associated
mount option with default value of 512 KB.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 395adc5..3725c9e 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -66,7 +66,8 @@
int congestion_kb; /* max writeback in flight */
int caps_wanted_delay_min, caps_wanted_delay_max;
int cap_release_safety;
- int max_readdir; /* max readdir size */
+ int max_readdir; /* max readdir result (entires) */
+ int max_readdir_bytes; /* max readdir result (bytes) */
char *snapdir_name; /* default ".snap" */
char *name;
char *secret;
@@ -81,6 +82,7 @@
#define CEPH_OSD_IDLE_TTL_DEFAULT 60
#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */
#define CEPH_MAX_READDIR_DEFAULT 1024
+#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024)
#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024)