ceph: fix reset_readdir()
When changing readdir postion, fi->next_offset should be set to 0
if the new postion is not in the first dirfrag.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Alex Elder <elder@linaro.org>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index a7eaf969..8ce8833 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -454,7 +454,7 @@
return 0;
}
-static void reset_readdir(struct ceph_file_info *fi)
+static void reset_readdir(struct ceph_file_info *fi, unsigned frag)
{
if (fi->last_readdir) {
ceph_mdsc_put_request(fi->last_readdir);
@@ -462,7 +462,10 @@
}
kfree(fi->last_name);
fi->last_name = NULL;
- fi->next_offset = 2; /* compensate for . and .. */
+ if (ceph_frag_is_leftmost(frag))
+ fi->next_offset = 2; /* compensate for . and .. */
+ else
+ fi->next_offset = 0;
if (fi->dentry) {
dput(fi->dentry);
fi->dentry = NULL;
@@ -507,7 +510,7 @@
fpos_frag(offset) != fi->frag ||
fpos_off(offset) < fi->offset) {
dout("dir_llseek dropping %p content\n", file);
- reset_readdir(fi);
+ reset_readdir(fi, fpos_frag(offset));
}
/* bump dir_release_count if we did a forward seek */