Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - A few misc subsystems: kthread, scripts, ntfs, ocfs2, block, and vfs

 - Most the MM patches which precede the patches in Willy's tree: kasan,
   pagecache, gup, swap, shmem, memcg, selftests, pagemap, mremap,
   sparsemem, vmalloc, pagealloc, memory-failure, mlock, hugetlb,
   userfaultfd, vmscan, compaction, mempolicy, oom-kill, migration, thp,
   cma, autonuma, psi, ksm, page-poison, madvise, memory-hotplug, rmap,
   zswap, uaccess, ioremap, highmem, cleanups, kfence, hmm, and damon.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (227 commits)
  mm/damon/sysfs: remove repeat container_of() in damon_sysfs_kdamond_release()
  Docs/ABI/testing: add DAMON sysfs interface ABI document
  Docs/admin-guide/mm/damon/usage: document DAMON sysfs interface
  selftests/damon: add a test for DAMON sysfs interface
  mm/damon/sysfs: support DAMOS stats
  mm/damon/sysfs: support DAMOS watermarks
  mm/damon/sysfs: support schemes prioritization
  mm/damon/sysfs: support DAMOS quotas
  mm/damon/sysfs: support DAMON-based Operation Schemes
  mm/damon/sysfs: support the physical address space monitoring
  mm/damon/sysfs: link DAMON for virtual address spaces monitoring
  mm/damon: implement a minimal stub for sysfs-based DAMON interface
  mm/damon/core: add number of each enum type values
  mm/damon/core: allow non-exclusive DAMON start/stop
  Docs/damon: update outdated term 'regions update interval'
  Docs/vm/damon/design: update DAMON-Idle Page Tracking interference handling
  Docs/vm/damon: call low level monitoring primitives the operations
  mm/damon: remove unnecessary CONFIG_DAMON option
  mm/damon/paddr,vaddr: remove damon_{p,v}a_{target_valid,set_operations}()
  mm/damon/dbgfs-test: fix is_target_id() change
  ...

14 files changed, 27 insertions, 36 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index bf9357123bc5..49f41074baad 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -5981,7 +5981,7 @@ bail:
 	return status;
 }
 
-/* Expects you to already be holding tl_inode->i_mutex */
+/* Expects you to already be holding tl_inode->i_rwsem */
 int __ocfs2_flush_truncate_log(struct ocfs2_super *osb)
 {
 	int status;
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 498da317580a..c23e1c243cc6 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -2311,7 +2311,7 @@ static int ocfs2_dio_end_io_write(struct inode *inode,
 
 	down_write(&oi->ip_alloc_sem);
 
-	/* Delete orphan before acquire i_mutex. */
+	/* Delete orphan before acquire i_rwsem. */
 	if (dwc->dw_orphaned) {
 		BUG_ON(dwc->dw_writer_pid != task_pid_nr(current));
 
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index 625c92521416..27fee68f860a 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -689,7 +689,7 @@ static struct config_group *o2nm_cluster_group_make_group(struct config_group *g
 	struct o2nm_node_group *ns = NULL;
 	struct config_group *o2hb_group = NULL, *ret = NULL;
 
-	/* this runs under the parent dir's i_mutex; there can be only
+	/* this runs under the parent dir's i_rwsem; there can be only
 	 * one caller in here at a time */
 	if (o2nm_single_cluster)
 		return ERR_PTR(-ENOSPC);
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index f2cc1ff29e6d..81c3d65d68fe 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -1957,7 +1957,7 @@ bail_nolock:
 }
 
 /*
- * NOTE: this should always be called with parent dir i_mutex taken.
+ * NOTE: this should always be called with parent dir i_rwsem taken.
  */
 int ocfs2_find_files_on_disk(const char *name,
 			     int namelen,
@@ -2003,7 +2003,7 @@ int ocfs2_lookup_ino_from_name(struct inode *dir, const char *name,
  * Return 0 if the name does not exist
  * Return -EEXIST if the directory contains the name
  *
- * Callers should have i_mutex + a cluster lock on dir
+ * Callers should have i_rwsem + a cluster lock on dir
  */
 int ocfs2_check_dir_for_entry(struct inode *dir,
 			      const char *name,
diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index fa0a14f199eb..e360543ad7e7 100644
--- a/fs/ocfs2/dlmfs/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -280,7 +280,7 @@ static struct inode *dlmfs_alloc_inode(struct super_block *sb)
 {
 	struct dlmfs_inode_private *ip;
 
-	ip = kmem_cache_alloc(dlmfs_inode_cache, GFP_NOFS);
+	ip = alloc_inode_sb(sb, dlmfs_inode_cache, GFP_NOFS);
 	if (!ip)
 		return NULL;
 
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index fc5f780fa235..01b7407a8893 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -270,7 +270,7 @@ int ocfs2_update_inode_atime(struct inode *inode,
 
 	/*
 	 * Don't use ocfs2_mark_inode_dirty() here as we don't always
-	 * have i_mutex to guard against concurrent changes to other
+	 * have i_rwsem to guard against concurrent changes to other
 	 * inode fields.
 	 */
 	inode->i_atime = current_time(inode);
@@ -540,15 +540,12 @@ int ocfs2_add_inode_data(struct ocfs2_super *osb,
 			 struct ocfs2_alloc_context *meta_ac,
 			 enum ocfs2_alloc_restarted *reason_ret)
 {
-	int ret;
 	struct ocfs2_extent_tree et;
 
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), fe_bh);
-	ret = ocfs2_add_clusters_in_btree(handle, &et, logical_offset,
-					  clusters_to_add, mark_unwritten,
-					  data_ac, meta_ac, reason_ret);
-
-	return ret;
+	return ocfs2_add_clusters_in_btree(handle, &et, logical_offset,
+					   clusters_to_add, mark_unwritten,
+					   data_ac, meta_ac, reason_ret);
 }
 
 static int ocfs2_extend_allocation(struct inode *inode, u32 logical_start,
@@ -1068,7 +1065,7 @@ static int ocfs2_extend_file(struct inode *inode,
 	/*
 	 * The alloc sem blocks people in read/write from reading our
 	 * allocation until we're done changing it. We depend on
-	 * i_mutex to block other extend/truncate calls while we're
+	 * i_rwsem to block other extend/truncate calls while we're
 	 * here.  We even have to hold it for sparse files because there
 	 * might be some tail zeroing.
 	 */
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 6c2411c2afcf..5739dc301569 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -713,7 +713,7 @@ bail:
 /*
  * Serialize with orphan dir recovery. If the process doing
  * recovery on this orphan dir does an iget() with the dir
- * i_mutex held, we'll deadlock here. Instead we detect this
+ * i_rwsem held, we'll deadlock here. Instead we detect this
  * and exit early - recovery will wipe this inode for us.
  */
 static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 5f6bacbeef6b..c4426d12a2ad 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -606,7 +606,7 @@ out:
 
 /*
  * make sure we've got at least bits_wanted contiguous bits in the
- * local alloc. You lose them when you drop i_mutex.
+ * local alloc. You lose them when you drop i_rwsem.
  *
  * We will add ourselves to the transaction passed in, but may start
  * our own in order to shift windows.
@@ -636,7 +636,7 @@ int ocfs2_reserve_local_alloc_bits(struct ocfs2_super *osb,
 
 	/*
 	 * We must double check state and allocator bits because
-	 * another process may have changed them while holding i_mutex.
+	 * another process may have changed them while holding i_rwsem.
 	 */
 	spin_lock(&osb->osb_lock);
 	if (!ocfs2_la_state_enabled(osb) ||
@@ -1029,7 +1029,7 @@ enum ocfs2_la_event {
 /*
  * Given an event, calculate the size of our next local alloc window.
  *
- * This should always be called under i_mutex of the local alloc inode
+ * This should always be called under i_rwsem of the local alloc inode
  * so that local alloc disabling doesn't race with processes trying to
  * use the allocator.
  *
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 2c46ff6ba4ea..c75fd54b9185 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -476,7 +476,7 @@ leave:
 		ocfs2_free_alloc_context(meta_ac);
 
 	/*
-	 * We should call iput after the i_mutex of the bitmap been
+	 * We should call iput after the i_rwsem of the bitmap been
 	 * unlocked in ocfs2_free_alloc_context, or the
 	 * ocfs2_delete_inode will mutex_lock again.
 	 */
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index bb62cc2e0211..337527571461 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -355,7 +355,7 @@ struct ocfs2_super
 	struct delayed_work		la_enable_wq;
 
 	/*
-	 * Must hold local alloc i_mutex and osb->osb_lock to change
+	 * Must hold local alloc i_rwsem and osb->osb_lock to change
 	 * local_alloc_bits. Reads can be done under either lock.
 	 */
 	unsigned int local_alloc_bits;
@@ -430,7 +430,7 @@ struct ocfs2_super
 	atomic_t			osb_tl_disable;
 	/*
 	 * How many clusters in our truncate log.
-	 * It must be protected by osb_tl_inode->i_mutex.
+	 * It must be protected by osb_tl_inode->i_rwsem.
 	 */
 	unsigned int truncated_clusters;
 
diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
index f033de733adb..273f65e0aaba 100644
--- a/fs/ocfs2/quota_global.c
+++ b/fs/ocfs2/quota_global.c
@@ -36,7 +36,7 @@
  * should be obeyed by all the functions:
  * - any write of quota structure (either to local or global file) is protected
  *   by dqio_sem or dquot->dq_lock.
- * - any modification of global quota file holds inode cluster lock, i_mutex,
+ * - any modification of global quota file holds inode cluster lock, i_rwsem,
  *   and ip_alloc_sem of the global quota file (achieved by
  *   ocfs2_lock_global_qf). It also has to hold qinfo_lock.
  * - an allocation of new blocks for local quota file is protected by
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 85a47621e0c0..a75e2b7d67f5 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -683,28 +683,22 @@ static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
 			 void *name,
 			 unsigned int namelen)
 {
-	int ret;
-
 	if (!lksb->lksb_fsdlm.sb_lvbptr)
 		lksb->lksb_fsdlm.sb_lvbptr = (char *)lksb +
 					     sizeof(struct dlm_lksb);
 
-	ret = dlm_lock(conn->cc_lockspace, mode, &lksb->lksb_fsdlm,
-		       flags|DLM_LKF_NODLCKWT, name, namelen, 0,
-		       fsdlm_lock_ast_wrapper, lksb,
-		       fsdlm_blocking_ast_wrapper);
-	return ret;
+	return dlm_lock(conn->cc_lockspace, mode, &lksb->lksb_fsdlm,
+			flags|DLM_LKF_NODLCKWT, name, namelen, 0,
+			fsdlm_lock_ast_wrapper, lksb,
+			fsdlm_blocking_ast_wrapper);
 }
 
 static int user_dlm_unlock(struct ocfs2_cluster_connection *conn,
 			   struct ocfs2_dlm_lksb *lksb,
 			   u32 flags)
 {
-	int ret;
-
-	ret = dlm_unlock(conn->cc_lockspace, lksb->lksb_fsdlm.sb_lkid,
-			 flags, &lksb->lksb_fsdlm, lksb);
-	return ret;
+	return dlm_unlock(conn->cc_lockspace, lksb->lksb_fsdlm.sb_lkid,
+			  flags, &lksb->lksb_fsdlm, lksb);
 }
 
 static int user_dlm_lock_status(struct ocfs2_dlm_lksb *lksb)
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 8bde30fa5387..477cdf94122e 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -548,7 +548,7 @@ static struct inode *ocfs2_alloc_inode(struct super_block *sb)
 {
 	struct ocfs2_inode_info *oi;
 
-	oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
+	oi = alloc_inode_sb(sb, ocfs2_inode_cachep, GFP_NOFS);
 	if (!oi)
 		return NULL;
 
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index dd784eb0cd7c..95d0611c5fc7 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -7205,7 +7205,7 @@ out:
  * Used for reflink a non-preserve-security file.
  *
  * It uses common api like ocfs2_xattr_set, so the caller
- * must not hold any lock expect i_mutex.
+ * must not hold any lock expect i_rwsem.
  */
 int ocfs2_init_security_and_acl(struct inode *dir,
 				struct inode *inode,