From 4d9513cf6d20f2977c791087cf4fd9cadb9d28e3 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 8 Feb 2022 10:27:50 -0500 Subject: [PATCH] ceph: wake waiters after failed async create Currently, we only wake the waiters if we got a req->r_target_inode out of the reply. In the case where the create fails though, we may not have one. If there is a non-zero result from the create, then ensure that we wake anything waiting on the inode after we shut it down. URL: https://tracker.ceph.com/issues/54067 Signed-off-by: Jeff Layton Reviewed-by: Xiubo Li Signed-off-by: Ilya Dryomov --- fs/ceph/file.c | 51 ++++++++++++++++++++++++++++++++------------------ 1 file changed, 33 insertions(+), 18 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 22ca724aef36..feb75eb1cd82 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -532,52 +532,67 @@ static void restore_deleg_ino(struct inode *dir, u64 ino) } } +static void wake_async_create_waiters(struct inode *inode, + struct ceph_mds_session *session) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + + spin_lock(&ci->i_ceph_lock); + if (ci->i_ceph_flags & CEPH_I_ASYNC_CREATE) { + ci->i_ceph_flags &= ~CEPH_I_ASYNC_CREATE; + wake_up_bit(&ci->i_ceph_flags, CEPH_ASYNC_CREATE_BIT); + } + ceph_kick_flushing_inode_caps(session, ci); + spin_unlock(&ci->i_ceph_lock); +} + static void ceph_async_create_cb(struct ceph_mds_client *mdsc, struct ceph_mds_request *req) { + struct dentry *dentry = req->r_dentry; + struct inode *dinode = d_inode(dentry); + struct inode *tinode = req->r_target_inode; int result = req->r_err ? req->r_err : le32_to_cpu(req->r_reply_info.head->result); + WARN_ON_ONCE(dinode && tinode && dinode != tinode); + + /* MDS changed -- caller must resubmit */ if (result == -EJUKEBOX) goto out; mapping_set_error(req->r_parent->i_mapping, result); if (result) { - struct dentry *dentry = req->r_dentry; - struct inode *inode = d_inode(dentry); int pathlen = 0; u64 base = 0; char *path = ceph_mdsc_build_path(req->r_dentry, &pathlen, &base, 0); + pr_warn("ceph: async create failure path=(%llx)%s result=%d!\n", + base, IS_ERR(path) ? "<>" : path, result); + ceph_mdsc_free_path(path, pathlen); + ceph_dir_clear_complete(req->r_parent); if (!d_unhashed(dentry)) d_drop(dentry); - ceph_inode_shutdown(inode); - - pr_warn("ceph: async create failure path=(%llx)%s result=%d!\n", - base, IS_ERR(path) ? "<>" : path, result); - ceph_mdsc_free_path(path, pathlen); + if (dinode) { + mapping_set_error(dinode->i_mapping, result); + ceph_inode_shutdown(dinode); + wake_async_create_waiters(dinode, req->r_session); + } } - if (req->r_target_inode) { - struct ceph_inode_info *ci = ceph_inode(req->r_target_inode); - u64 ino = ceph_vino(req->r_target_inode).ino; + if (tinode) { + u64 ino = ceph_vino(tinode).ino; if (req->r_deleg_ino != ino) pr_warn("%s: inode number mismatch! err=%d deleg_ino=0x%llx target=0x%llx\n", __func__, req->r_err, req->r_deleg_ino, ino); - mapping_set_error(req->r_target_inode->i_mapping, result); - spin_lock(&ci->i_ceph_lock); - if (ci->i_ceph_flags & CEPH_I_ASYNC_CREATE) { - ci->i_ceph_flags &= ~CEPH_I_ASYNC_CREATE; - wake_up_bit(&ci->i_ceph_flags, CEPH_ASYNC_CREATE_BIT); - } - ceph_kick_flushing_inode_caps(req->r_session, ci); - spin_unlock(&ci->i_ceph_lock); + mapping_set_error(tinode->i_mapping, result); + wake_async_create_waiters(tinode, req->r_session); } else if (!result) { pr_warn("%s: no req->r_target_inode for 0x%llx\n", __func__, req->r_deleg_ino);