From: Xiubo Li <xiubli@xxxxxxxxxx>
When truncating the file size the MDS will help update the last
encrypted block, and during this we need to make sure the client
won't fill the pagecaches.
Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
---
fs/ceph/inode.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index f4059d73edd5..cc1829ab497d 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2647,9 +2647,12 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr, struct ceph_iattr *c
req->r_num_caps = 1;
req->r_stamp = attr->ia_ctime;
if (fill_fscrypt) {
+ filemap_invalidate_lock(inode->i_mapping);
err = fill_fscrypt_truncate(inode, req, attr);
- if (err)
+ if (err) {
+ filemap_invalidate_unlock(inode->i_mapping);
goto out;
+ }
}
/*
@@ -2660,6 +2663,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr, struct ceph_iattr *c
* it.
*/
err = ceph_mdsc_do_request(mdsc, NULL, req);
+ if (fill_fscrypt)
+ filemap_invalidate_unlock(inode->i_mapping);
if (err == -EAGAIN && truncate_retry--) {
dout("setattr %p result=%d (%s locally, %d remote), retry it!\n",
inode, err, ceph_cap_string(dirtied), mask);
--
2.27.0
