This is the 5.4.51 stable release

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Merge 5.4.51 into android11-5.4

Changes in 5.4.51
	io_uring: make sure async workqueue is canceled on exit
	mm: fix swap cache node allocation mask
	EDAC/amd64: Read back the scrub rate PCI register on F15h
	usbnet: smsc95xx: Fix use-after-free after removal
	sched/debug: Make sd->flags sysctl read-only
	mm/slub.c: fix corrupted freechain in deactivate_slab()
	mm/slub: fix stack overruns with SLUB_STATS
	rxrpc: Fix race between incoming ACK parser and retransmitter
	usb: usbtest: fix missing kfree(dev->buf) in usbtest_disconnect
	tools lib traceevent: Add append() function helper for appending strings
	tools lib traceevent: Handle __attribute__((user)) in field names
	s390/debug: avoid kernel warning on too large number of pages
	nvme-multipath: set bdi capabilities once
	nvme-multipath: fix deadlock between ana_work and scan_work
	nvme-multipath: fix deadlock due to head->lock
	nvme-multipath: fix bogus request queue reference put
	kgdb: Avoid suspicious RCU usage warning
	selftests: tpm: Use /bin/sh instead of /bin/bash
	tpm: Fix TIS locality timeout problems
	crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock()
	drm/msm/dpu: fix error return code in dpu_encoder_init
	rxrpc: Fix afs large storage transmission performance drop
	RDMA/counter: Query a counter before release
	cxgb4: use unaligned conversion for fetching timestamp
	cxgb4: parse TC-U32 key values and masks natively
	cxgb4: fix endian conversions for L4 ports in filters
	cxgb4: use correct type for all-mask IP address comparison
	cxgb4: fix SGE queue dump destination buffer context
	hwmon: (max6697) Make sure the OVERT mask is set correctly
	hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
	thermal/drivers/mediatek: Fix bank number settings on mt8183
	thermal/drivers/rcar_gen3: Fix undefined temperature if negative
	nfsd4: fix nfsdfs reference count loop
	nfsd: fix nfsdfs inode reference count leak
	drm: sun4i: hdmi: Remove extra HPD polling
	virtio-blk: free vblk-vqs in error path of virtblk_probe()
	SMB3: Honor 'posix' flag for multiuser mounts
	nvme: fix identify error status silent ignore
	nvme: fix a crash in nvme_mpath_add_disk
	samples/vfs: avoid warning in statx override
	i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665
	i2c: mlxcpld: check correct size of maximum RECV_LEN packet
	spi: spi-fsl-dspi: Fix external abort on interrupt in resume or exit paths
	nfsd: apply umask on fs without ACL support
	Revert "ALSA: usb-audio: Improve frames size computation"
	SMB3: Honor 'seal' flag for multiuser mounts
	SMB3: Honor persistent/resilient handle flags for multiuser mounts
	SMB3: Honor lease disabling for multiuser mounts
	SMB3: Honor 'handletimeout' flag for multiuser mounts
	cifs: Fix the target file was deleted when rename failed.
	MIPS: lantiq: xway: sysctrl: fix the GPHY clock alias names
	MIPS: Add missing EHB in mtc0 -> mfc0 sequence for DSPen
	drm/amd/display: Only revalidate bandwidth on medium and fast updates
	drm/amdgpu: use %u rather than %d for sclk/mclk
	drm/amdgpu/atomfirmware: fix vram_info fetching for renoir
	dma-buf: Move dma_buf_release() from fops to dentry_ops
	irqchip/gic: Atomically update affinity
	mm, compaction: fully assume capture is not NULL in compact_zone_order()
	mm, compaction: make capture control handling safe wrt interrupts
	x86/resctrl: Fix memory bandwidth counter width for AMD
	dm zoned: assign max_io_len correctly
	efi: Make it possible to disable efivar_ssdt entirely
	Linux 5.4.51

Signed-off-by: Greg Kroah-Hartman <[email protected]>
Change-Id: Ib29e1b61540451995ee757cf90c9ba24e6b8d6b3

drivers/dma-buf/dma-buf.c

@@ -54,37 +54,11 @@ static char *dmabuffs_dname(struct dentry *dentry, char *buffer, int buflen)
 			     dentry->d_name.name, ret > 0 ? name : "");
 }
 
-static const struct dentry_operations dma_buf_dentry_ops = {
-	.d_dname = dmabuffs_dname,
-};
-
-static struct vfsmount *dma_buf_mnt;
-
-static int dma_buf_fs_init_context(struct fs_context *fc)
-{
-	struct pseudo_fs_context *ctx;
-
-	ctx = init_pseudo(fc, DMA_BUF_MAGIC);
-	if (!ctx)
-		return -ENOMEM;
-	ctx->dops = &dma_buf_dentry_ops;
-	return 0;
-}
-
-static struct file_system_type dma_buf_fs_type = {
-	.name = "dmabuf",
-	.init_fs_context = dma_buf_fs_init_context,
-	.kill_sb = kill_anon_super,
-};
-
-static int dma_buf_release(struct inode *inode, struct file *file)
+static void dma_buf_release(struct dentry *dentry)
 {
 	struct dma_buf *dmabuf;
 
-	if (!is_dma_buf_file(file))
-		return -EINVAL;
-
-	dmabuf = file->private_data;
+	dmabuf = dentry->d_fsdata;
 
 	BUG_ON(dmabuf->vmapping_counter);
 
@@ -110,9 +84,32 @@ static int dma_buf_release(struct inode *inode, struct file *file)
 	module_put(dmabuf->owner);
 	kfree(dmabuf->name);
 	kfree(dmabuf);
+}
+
+static const struct dentry_operations dma_buf_dentry_ops = {
+	.d_dname = dmabuffs_dname,
+	.d_release = dma_buf_release,
+};
+
+static struct vfsmount *dma_buf_mnt;
+
+static int dma_buf_fs_init_context(struct fs_context *fc)
+{
+	struct pseudo_fs_context *ctx;
+
+	ctx = init_pseudo(fc, DMA_BUF_MAGIC);
+	if (!ctx)
+		return -ENOMEM;
+	ctx->dops = &dma_buf_dentry_ops;
 	return 0;
 }
 
+static struct file_system_type dma_buf_fs_type = {
+	.name = "dmabuf",
+	.init_fs_context = dma_buf_fs_init_context,
+	.kill_sb = kill_anon_super,
+};
+
 static int dma_buf_mmap_internal(struct file *file, struct vm_area_struct *vma)
 {
 	struct dma_buf *dmabuf;
@@ -412,7 +409,6 @@ static void dma_buf_show_fdinfo(struct seq_file *m, struct file *file)
 }
 
 static const struct file_operations dma_buf_fops = {
-	.release	= dma_buf_release,
 	.mmap		= dma_buf_mmap_internal,
 	.llseek		= dma_buf_llseek,
 	.poll		= dma_buf_poll,