Merge tag 'v6.4-rc5' into media_stage

Linux 6.4-rc5

* tag 'v6.4-rc5': (919 commits)
  Linux 6.4-rc5
  leds: qcom-lpg: Fix PWM period limits
  selftests/ftrace: Choose target function for filter test from samples
  KVM: selftests: Add test for race in kvm_recalculate_apic_map()
  KVM: x86: Bail from kvm_recalculate_phys_map() if x2APIC ID is out-of-bounds
  KVM: x86: Account fastpath-only VM-Exits in vCPU stats
  KVM: SVM: vNMI pending bit is V_NMI_PENDING_MASK not V_NMI_BLOCKING_MASK
  KVM: x86/mmu: Grab memslot for correct address space in NX recovery worker
  tpm, tpm_tis: correct tpm_tis_flags enumeration values
  Revert "ext4: remove ac->ac_found > sbi->s_mb_min_to_scan dead check in ext4_mb_check_limits"
  media: uvcvideo: Don't expose unsupported formats to userspace
  media: v4l2-subdev: Fix missing kerneldoc for client_caps
  media: staging: media: imx: initialize hs_settle to avoid warning
  media: v4l2-mc: Drop subdev check in v4l2_create_fwnode_links_to_pad()
  riscv: Implement missing huge_ptep_get
  riscv: Fix huge_ptep_set_wrprotect when PTE is a NAPOT
  module/decompress: Fix error checking on zstd decompression
  fork, vhost: Use CLONE_THREAD to fix freezer/ps regression
  dt-bindings: serial: 8250_omap: add rs485-rts-active-high
  selinux: don't use make's grouped targets feature yet
  ...

1 files changed, 79 insertions, 0 deletions

diff --git a/fs/smb/server/ksmbd_work.c b/fs/smb/server/ksmbd_work.c
new file mode 100644
index 000000000000..14b9caebf7a4
--- /dev/null
+++ b/fs/smb/server/ksmbd_work.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *   Copyright (C) 2019 Samsung Electronics Co., Ltd.
+ */
+
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#include "server.h"
+#include "connection.h"
+#include "ksmbd_work.h"
+#include "mgmt/ksmbd_ida.h"
+
+static struct kmem_cache *work_cache;
+static struct workqueue_struct *ksmbd_wq;
+
+struct ksmbd_work *ksmbd_alloc_work_struct(void)
+{
+	struct ksmbd_work *work = kmem_cache_zalloc(work_cache, GFP_KERNEL);
+
+	if (work) {
+		work->compound_fid = KSMBD_NO_FID;
+		work->compound_pfid = KSMBD_NO_FID;
+		INIT_LIST_HEAD(&work->request_entry);
+		INIT_LIST_HEAD(&work->async_request_entry);
+		INIT_LIST_HEAD(&work->fp_entry);
+		INIT_LIST_HEAD(&work->interim_entry);
+	}
+	return work;
+}
+
+void ksmbd_free_work_struct(struct ksmbd_work *work)
+{
+	WARN_ON(work->saved_cred != NULL);
+
+	kvfree(work->response_buf);
+	kvfree(work->aux_payload_buf);
+	kfree(work->tr_buf);
+	kvfree(work->request_buf);
+	if (work->async_id)
+		ksmbd_release_id(&work->conn->async_ida, work->async_id);
+	kmem_cache_free(work_cache, work);
+}
+
+void ksmbd_work_pool_destroy(void)
+{
+	kmem_cache_destroy(work_cache);
+}
+
+int ksmbd_work_pool_init(void)
+{
+	work_cache = kmem_cache_create("ksmbd_work_cache",
+				       sizeof(struct ksmbd_work), 0,
+				       SLAB_HWCACHE_ALIGN, NULL);
+	if (!work_cache)
+		return -ENOMEM;
+	return 0;
+}
+
+int ksmbd_workqueue_init(void)
+{
+	ksmbd_wq = alloc_workqueue("ksmbd-io", 0, 0);
+	if (!ksmbd_wq)
+		return -ENOMEM;
+	return 0;
+}
+
+void ksmbd_workqueue_destroy(void)
+{
+	destroy_workqueue(ksmbd_wq);
+	ksmbd_wq = NULL;
+}
+
+bool ksmbd_queue_work(struct ksmbd_work *work)
+{
+	return queue_work(ksmbd_wq, &work->work);
+}