Merge tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux

Pull UML updates from Richard Weinberger:

 - Add support for rust (yay!)

 - Add support for LTO

 - Add platform bus support to virtio-pci

 - Various virtio fixes

 - Coding style, spelling cleanups

* tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (27 commits)
  Documentation: rust: Fix arch support table
  uml: vector: Remove unused definitions VECTOR_{WRITE,HEADERS}
  um: virt-pci: properly remove PCI device from bus
  um: virtio_uml: move device breaking into workqueue
  um: virtio_uml: mark device as unregistered when breaking it
  um: virtio_uml: free command if adding to virtqueue failed
  UML: define RUNTIME_DISCARD_EXIT
  virt-pci: add platform bus support
  um-virt-pci: Make max delay configurable
  um: virt-pci: implement pcibios_get_phb_of_node()
  um: Support LTO
  um: put power options in a menu
  um: Use CFLAGS_vmlinux
  um: Prevent building modules incompatible with MODVERSIONS
  um: Avoid pcap multiple definition errors
  um: Make the definition of cpu_data more compatible
  x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
  rust: arch/um: Add support for CONFIG_RUST under x86_64 UML
  rust: arch/um: Disable FP/SIMD instruction to match x86
  rust: arch/um: Use 'pie' relocation mode under UML
  ...

1 files changed, 8 insertions, 7 deletions

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index c18bb50c31b6..28b4f15c19eb 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -412,7 +412,7 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc)
 	if (page->index >= end_index)
 		count = inode->i_size & (PAGE_SIZE-1);
 
-	buffer = kmap(page);
+	buffer = kmap_local_page(page);
 
 	err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count);
 	if (err != count) {
@@ -428,9 +428,9 @@ static int hostfs_writepage(struct page *page, struct writeback_control *wbc)
 	err = 0;
 
  out:
-	kunmap(page);
-
+	kunmap_local(buffer);
 	unlock_page(page);
+
 	return err;
 }
 
@@ -441,7 +441,7 @@ static int hostfs_read_folio(struct file *file, struct folio *folio)
 	loff_t start = page_offset(page);
 	int bytes_read, ret = 0;
 
-	buffer = kmap(page);
+	buffer = kmap_local_page(page);
 	bytes_read = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer,
 			PAGE_SIZE);
 	if (bytes_read < 0) {
@@ -458,8 +458,9 @@ static int hostfs_read_folio(struct file *file, struct folio *folio)
 
  out:
 	flush_dcache_page(page);
-	kunmap(page);
+	kunmap_local(buffer);
 	unlock_page(page);
+
 	return ret;
 }
 
@@ -484,9 +485,9 @@ static int hostfs_write_end(struct file *file, struct address_space *mapping,
 	unsigned from = pos & (PAGE_SIZE - 1);
 	int err;
 
-	buffer = kmap(page);
+	buffer = kmap_local_page(page);
 	err = write_file(FILE_HOSTFS_I(file)->fd, &pos, buffer + from, copied);
-	kunmap(page);
+	kunmap_local(buffer);
 
 	if (!PageUptodate(page) && err == PAGE_SIZE)
 		SetPageUptodate(page);