ceph: remove redundant code for max file size verification

Both ceph_update_writeable_page and ceph_setattr will verify file size
with max size ceph supported.
There are two caller for ceph_update_writeable_page, ceph_write_begin and
ceph_page_mkwrite. For ceph_write_begin, we have already verified the size in
generic_write_checks of ceph_write_iter; for ceph_page_mkwrite, we have no
chance to change file size when mmap. Likewise we have already verified the size
in inode_change_ok when we call ceph_setattr.
So let's remove the redundant code for max file size verification.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 90b3954d48ed..18c06bbaf136 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -1076,12 +1076,6 @@ retry_locked:
         /* past end of file? */
         i_size = inode->i_size;   /* caller holds i_mutex */
 
-        if (i_size + len > inode->i_sb->s_maxbytes) {
-                /* file is too big */
-                r = -EINVAL;
-                goto fail;
-        }
-
         if (page_off >= i_size ||
             (pos_in_page == 0 && (pos+len) >= i_size &&
              end_in_page - pos_in_page != PAGE_CACHE_SIZE)) {
@@ -1099,9 +1093,6 @@ retry_locked:
         if (r < 0)
                 goto fail_nosnap;
         goto retry_locked;
-
-fail:
-        up_read(&mdsc->snap_rwsem);
 fail_nosnap:
         unlock_page(page);
         return r;