Three CephFS fixes from Xiubo and Luis and a bunch of assorted

cleanups.
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Merge tag 'ceph-for-6.12-rc1' of https://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "Three CephFS fixes from Xiubo and Luis and a bunch of assorted
  cleanups"

* tag 'ceph-for-6.12-rc1' of https://github.com/ceph/ceph-client:
  ceph: remove the incorrect Fw reference check when dirtying pages
  ceph: Remove empty definition in header file
  ceph: Fix typo in the comment
  ceph: fix a memory leak on cap_auths in MDS client
  ceph: flush all caps releases when syncing the whole filesystem
  ceph: rename ceph_flush_cap_releases() to ceph_flush_session_cap_releases()
  libceph: use min() to simplify code in ceph_dns_resolve_name()
  ceph: Convert to use jiffies macro
  ceph: Remove unused declarations

fs/ceph/addr.c

@@ -96,7 +96,6 @@ static bool ceph_dirty_folio(struct address_space *mapping, struct folio *folio)
 
 	/* dirty the head */
 	spin_lock(&ci->i_ceph_lock);
-	BUG_ON(ci->i_wr_ref == 0); // caller should hold Fw reference
 	if (__ceph_have_pending_cap_snap(ci)) {
 		struct ceph_cap_snap *capsnap =
 				list_last_entry(&ci->i_cap_snaps,

fs/ceph/caps.c

@@ -10,6 +10,7 @@
 #include <linux/writeback.h>
 #include <linux/iversion.h>
 #include <linux/filelock.h>
+#include <linux/jiffies.h>
 
 #include "super.h"
 #include "mds_client.h"
@@ -4149,7 +4150,7 @@ retry:
 		ceph_remove_cap(mdsc, cap, false);
 		goto out_unlock;
 	} else if (tsession) {
-		/* add placeholder for the export tagert */
+		/* add placeholder for the export target */
 		int flag = (cap == ci->i_auth_cap) ? CEPH_CAP_FLAG_AUTH : 0;
 		tcap = new_cap;
 		ceph_add_cap(inode, tsession, t_cap_id, issued, 0,
@@ -4602,7 +4603,7 @@ flush_cap_releases:
 		__ceph_queue_cap_release(session, cap);
 		spin_unlock(&session->s_cap_lock);
 	}
-	ceph_flush_cap_releases(mdsc, session);
+	ceph_flush_session_cap_releases(mdsc, session);
 	goto done;
 
 bad:
@@ -4659,7 +4660,7 @@ unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc)
 		 * slowness doesn't block mdsc delayed work,
 		 * preventing send_renew_caps() from running.
 		 */
-		if (jiffies - loop_start >= 5 * HZ)
+		if (time_after_eq(jiffies, loop_start + 5 * HZ))
 			break;
 	}
 	spin_unlock(&mdsc->cap_delay_lock);
@@ -4701,6 +4702,28 @@ void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc)
 	ceph_mdsc_iterate_sessions(mdsc, flush_dirty_session_caps, true);
 }
 
+/*
+ * Flush all cap releases to the mds
+ */
+static void flush_cap_releases(struct ceph_mds_session *s)
+{
+	struct ceph_mds_client *mdsc = s->s_mdsc;
+	struct ceph_client *cl = mdsc->fsc->client;
+
+	doutc(cl, "begin\n");
+	spin_lock(&s->s_cap_lock);
+	if (s->s_num_cap_releases)
+		ceph_flush_session_cap_releases(mdsc, s);
+	spin_unlock(&s->s_cap_lock);
+	doutc(cl, "done\n");
+
+}
+
+void ceph_flush_cap_releases(struct ceph_mds_client *mdsc)
+{
+	ceph_mdsc_iterate_sessions(mdsc, flush_cap_releases, true);
+}
+
 void __ceph_touch_fmode(struct ceph_inode_info *ci,
 			struct ceph_mds_client *mdsc, int fmode)
 {

fs/ceph/dir.c

@@ -2058,7 +2058,7 @@ static int ceph_d_delete(const struct dentry *dentry)
 		return 0;
 	if (ceph_snap(d_inode(dentry)) != CEPH_NOSNAP)
 		return 0;
-	/* vaild lease? */
+	/* valid lease? */
 	di = ceph_dentry(dentry);
 	if (di) {
 		if (__dentry_lease_is_valid(di))

fs/ceph/inode.c

@@ -1779,7 +1779,7 @@ retry_lookup:
 		if (err < 0)
 			goto done;
 	} else if (rinfo->head->is_dentry && req->r_dentry) {
-		/* parent inode is not locked, be carefull */
+		/* parent inode is not locked, be careful */
 		struct ceph_vino *ptvino = NULL;
 		dvino.ino = le64_to_cpu(rinfo->diri.in->ino);
 		dvino.snap = le64_to_cpu(rinfo->diri.in->snapid);

fs/ceph/mds_client.c

@@ -2266,7 +2266,7 @@ int ceph_trim_caps(struct ceph_mds_client *mdsc,
 		      trim_caps - remaining);
 	}
 
-	ceph_flush_cap_releases(mdsc, session);
+	ceph_flush_session_cap_releases(mdsc, session);
 	return 0;
 }
 
@@ -2420,7 +2420,7 @@ static void ceph_cap_release_work(struct work_struct *work)
 	ceph_put_mds_session(session);
 }
 
-void ceph_flush_cap_releases(struct ceph_mds_client *mdsc,
+void ceph_flush_session_cap_releases(struct ceph_mds_client *mdsc,
 		             struct ceph_mds_session *session)
 {
 	struct ceph_client *cl = mdsc->fsc->client;
@@ -2447,7 +2447,7 @@ void __ceph_queue_cap_release(struct ceph_mds_session *session,
 	session->s_num_cap_releases++;
 
 	if (!(session->s_num_cap_releases % CEPH_CAPS_PER_RELEASE))
-		ceph_flush_cap_releases(session->s_mdsc, session);
+		ceph_flush_session_cap_releases(session->s_mdsc, session);
 }
 
 static void ceph_cap_reclaim_work(struct work_struct *work)
@@ -4340,7 +4340,7 @@ skip_cap_auths:
 		/* flush cap releases */
 		spin_lock(&session->s_cap_lock);
 		if (session->s_num_cap_releases)
-			ceph_flush_cap_releases(mdsc, session);
+			ceph_flush_session_cap_releases(mdsc, session);
 		spin_unlock(&session->s_cap_lock);
 
 		send_flushmsg_ack(mdsc, session, seq);
@@ -4910,7 +4910,7 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
 	} else {
 		recon_state.msg_version = 2;
 	}
-	/* trsaverse this session's caps */
+	/* traverse this session's caps */
 	err = ceph_iterate_session_caps(session, reconnect_caps_cb, &recon_state);
 
 	spin_lock(&session->s_cap_lock);
@@ -5446,7 +5446,7 @@ static void delayed_work(struct work_struct *work)
 		}
 		mutex_unlock(&mdsc->mutex);
 
-		ceph_flush_cap_releases(mdsc, s);
+		ceph_flush_session_cap_releases(mdsc, s);
 
 		mutex_lock(&s->s_mutex);
 		if (renew_caps)
@@ -5877,6 +5877,7 @@ void ceph_mdsc_sync(struct ceph_mds_client *mdsc)
 	mutex_unlock(&mdsc->mutex);
 
 	ceph_flush_dirty_caps(mdsc);
+	ceph_flush_cap_releases(mdsc);
 	spin_lock(&mdsc->cap_dirty_lock);
 	want_flush = mdsc->last_cap_flush_tid;
 	if (!list_empty(&mdsc->cap_flush_list)) {
@@ -6015,6 +6016,18 @@ static void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
 		ceph_mdsmap_destroy(mdsc->mdsmap);
 	kfree(mdsc->sessions);
 	ceph_caps_finalize(mdsc);
+
+	if (mdsc->s_cap_auths) {
+		int i;
+
+		for (i = 0; i < mdsc->s_cap_auths_num; i++) {
+			kfree(mdsc->s_cap_auths[i].match.gids);
+			kfree(mdsc->s_cap_auths[i].match.path);
+			kfree(mdsc->s_cap_auths[i].match.fs_name);
+		}
+		kfree(mdsc->s_cap_auths);
+	}
+
 	ceph_pool_perm_destroy(mdsc);
 }
 

fs/ceph/mds_client.h

@@ -559,9 +559,6 @@ extern struct ceph_mds_session *
 ceph_get_mds_session(struct ceph_mds_session *s);
 extern void ceph_put_mds_session(struct ceph_mds_session *s);
 
-extern int ceph_send_msg_mds(struct ceph_mds_client *mdsc,
-			     struct ceph_msg *msg, int mds);
-
 extern int ceph_mdsc_init(struct ceph_fs_client *fsc);
 extern void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc);
 extern void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc);
@@ -602,8 +599,8 @@ extern void ceph_mdsc_iterate_sessions(struct ceph_mds_client *mdsc,
 extern struct ceph_msg *ceph_create_session_msg(u32 op, u64 seq);
 extern void __ceph_queue_cap_release(struct ceph_mds_session *session,
 				    struct ceph_cap *cap);
-extern void ceph_flush_cap_releases(struct ceph_mds_client *mdsc,
+extern void ceph_flush_session_cap_releases(struct ceph_mds_client *mdsc,
-				    struct ceph_mds_session *session);
+					    struct ceph_mds_session *session);
 extern void ceph_queue_cap_reclaim_work(struct ceph_mds_client *mdsc);
 extern void ceph_reclaim_caps_nr(struct ceph_mds_client *mdsc, int nr);
 extern void ceph_queue_cap_unlink_work(struct ceph_mds_client *mdsc);

fs/ceph/super.c

@@ -126,6 +126,7 @@ static int ceph_sync_fs(struct super_block *sb, int wait)
 	if (!wait) {
 		doutc(cl, "(non-blocking)\n");
 		ceph_flush_dirty_caps(fsc->mdsc);
+		ceph_flush_cap_releases(fsc->mdsc);
 		doutc(cl, "(non-blocking) done\n");
 		return 0;
 	}

fs/ceph/super.h

@@ -1056,8 +1056,6 @@ extern int ceph_fill_trace(struct super_block *sb,
 extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
 				    struct ceph_mds_session *session);
 
-extern int ceph_inode_holds_cap(struct inode *inode, int mask);
-
 extern bool ceph_inode_set_size(struct inode *inode, loff_t size);
 extern void __ceph_do_pending_vmtruncate(struct inode *inode);
 
@@ -1208,10 +1206,6 @@ static inline void ceph_init_inode_acls(struct inode *inode,
 					struct ceph_acl_sec_ctx *as_ctx)
 {
 }
-static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode)
-{
-	return 0;
-}
 
 static inline void ceph_forget_all_cached_acls(struct inode *inode)
 {
@@ -1270,6 +1264,7 @@ extern bool __ceph_should_report_size(struct ceph_inode_info *ci);
 extern void ceph_check_caps(struct ceph_inode_info *ci, int flags);
 extern unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc);
 extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
+extern void ceph_flush_cap_releases(struct ceph_mds_client *mdsc);
 extern int  ceph_drop_caps_for_unlink(struct inode *inode);
 extern int ceph_encode_inode_release(void **p, struct inode *inode,
 				     int mds, int drop, int unless, int force);

include/linux/ceph/osd_client.h

@@ -449,8 +449,6 @@ extern int ceph_osdc_init(struct ceph_osd_client *osdc,
 extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
 extern void ceph_osdc_reopen_osds(struct ceph_osd_client *osdc);
 
-extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
-				   struct ceph_msg *msg);
 extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
 				 struct ceph_msg *msg);
 void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb);

net/ceph/messenger.c

@@ -1254,7 +1254,7 @@ static int ceph_dns_resolve_name(const char *name, size_t namelen,
 	colon_p = memchr(name, ':', namelen);
 
 	if (delim_p && colon_p)
-		end = delim_p < colon_p ? delim_p : colon_p;
+		end = min(delim_p, colon_p);
 	else if (!delim_p && colon_p)
 		end = colon_p;
 	else {