1 files changed, 38 insertions, 34 deletions

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 4c42ada60ae7..fd1147aa3891 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -251,6 +251,7 @@ static int do_gfs2_set_flags(struct inode *inode, u32 reqflags, u32 mask)
 		error = filemap_fdatawait(inode->i_mapping);
 		if (error)
 			goto out;
+		truncate_inode_pages(inode->i_mapping, 0);
 		if (new_flags & GFS2_DIF_JDATA)
 			gfs2_ordered_del_inode(ip);
 	}
@@ -376,23 +377,23 @@ static void gfs2_size_hint(struct file *filep, loff_t offset, size_t size)
 }
 
 /**
- * gfs2_allocate_page_backing - Allocate blocks for a write fault
- * @page: The (locked) page to allocate backing for
+ * gfs2_allocate_folio_backing - Allocate blocks for a write fault
+ * @folio: The (locked) folio to allocate backing for
  * @length: Size of the allocation
  *
- * We try to allocate all the blocks required for the page in one go.  This
+ * We try to allocate all the blocks required for the folio in one go.  This
  * might fail for various reasons, so we keep trying until all the blocks to
- * back this page are allocated.  If some of the blocks are already allocated,
+ * back this folio are allocated.  If some of the blocks are already allocated,
  * that is ok too.
  */
-static int gfs2_allocate_page_backing(struct page *page, unsigned int length)
+static int gfs2_allocate_folio_backing(struct folio *folio, size_t length)
 {
-	u64 pos = page_offset(page);
+	u64 pos = folio_pos(folio);
 
 	do {
 		struct iomap iomap = { };
 
-		if (gfs2_iomap_alloc(page->mapping->host, pos, length, &iomap))
+		if (gfs2_iomap_alloc(folio->mapping->host, pos, length, &iomap))
 			return -EIO;
 
 		if (length < iomap.length)
@@ -414,16 +415,16 @@ static int gfs2_allocate_page_backing(struct page *page, unsigned int length)
 
 static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
 {
-	struct page *page = vmf->page;
+	struct folio *folio = page_folio(vmf->page);
 	struct inode *inode = file_inode(vmf->vma->vm_file);
 	struct gfs2_inode *ip = GFS2_I(inode);
 	struct gfs2_sbd *sdp = GFS2_SB(inode);
 	struct gfs2_alloc_parms ap = {};
-	u64 offset = page_offset(page);
+	u64 pos = folio_pos(folio);
 	unsigned int data_blocks, ind_blocks, rblocks;
 	vm_fault_t ret = VM_FAULT_LOCKED;
 	struct gfs2_holder gh;
-	unsigned int length;
+	size_t length;
 	loff_t size;
 	int err;
 
@@ -436,23 +437,23 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
 		goto out_uninit;
 	}
 
-	/* Check page index against inode size */
+	/* Check folio index against inode size */
 	size = i_size_read(inode);
-	if (offset >= size) {
+	if (pos >= size) {
 		ret = VM_FAULT_SIGBUS;
 		goto out_unlock;
 	}
 
-	/* Update file times before taking page lock */
+	/* Update file times before taking folio lock */
 	file_update_time(vmf->vma->vm_file);
 
-	/* page is wholly or partially inside EOF */
-	if (size - offset < PAGE_SIZE)
-		length = size - offset;
+	/* folio is wholly or partially inside EOF */
+	if (size - pos < folio_size(folio))
+		length = size - pos;
 	else
-		length = PAGE_SIZE;
+		length = folio_size(folio);
 
-	gfs2_size_hint(vmf->vma->vm_file, offset, length);
+	gfs2_size_hint(vmf->vma->vm_file, pos, length);
 
 	set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
 	set_bit(GIF_SW_PAGED, &ip->i_flags);
@@ -463,11 +464,12 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
 	 */
 
 	if (!gfs2_is_stuffed(ip) &&
-	    !gfs2_write_alloc_required(ip, offset, length)) {
-		lock_page(page);
-		if (!PageUptodate(page) || page->mapping != inode->i_mapping) {
+	    !gfs2_write_alloc_required(ip, pos, length)) {
+		folio_lock(folio);
+		if (!folio_test_uptodate(folio) ||
+		    folio->mapping != inode->i_mapping) {
 			ret = VM_FAULT_NOPAGE;
-			unlock_page(page);
+			folio_unlock(folio);
 		}
 		goto out_unlock;
 	}
@@ -504,7 +506,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
 		goto out_trans_fail;
 	}
 
-	/* Unstuff, if required, and allocate backing blocks for page */
+	/* Unstuff, if required, and allocate backing blocks for folio */
 	if (gfs2_is_stuffed(ip)) {
 		err = gfs2_unstuff_dinode(ip);
 		if (err) {
@@ -513,22 +515,22 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf)
 		}
 	}
 
-	lock_page(page);
+	folio_lock(folio);
 	/* If truncated, we must retry the operation, we may have raced
 	 * with the glock demotion code.
 	 */
-	if (!PageUptodate(page) || page->mapping != inode->i_mapping) {
+	if (!folio_test_uptodate(folio) || folio->mapping != inode->i_mapping) {
 		ret = VM_FAULT_NOPAGE;
 		goto out_page_locked;
 	}
 
-	err = gfs2_allocate_page_backing(page, length);
+	err = gfs2_allocate_folio_backing(folio, length);
 	if (err)
 		ret = vmf_fs_error(err);
 
 out_page_locked:
 	if (ret != VM_FAULT_LOCKED)
-		unlock_page(page);
+		folio_unlock(folio);
 out_trans_end:
 	gfs2_trans_end(sdp);
 out_trans_fail:
@@ -540,8 +542,8 @@ out_unlock:
 out_uninit:
 	gfs2_holder_uninit(&gh);
 	if (ret == VM_FAULT_LOCKED) {
-		set_page_dirty(page);
-		wait_for_stable_page(page);
+		folio_mark_dirty(folio);
+		folio_wait_stable(folio);
 	}
 	sb_end_pagefault(inode->i_sb);
 	return ret;
@@ -818,7 +820,7 @@ static ssize_t gfs2_file_direct_read(struct kiocb *iocb, struct iov_iter *to,
 	/*
 	 * In this function, we disable page faults when we're holding the
 	 * inode glock while doing I/O.  If a page fault occurs, we indicate
-	 * that the inode glock may be dropped, fault in the pages manually,
+	 * that the inode glock should be dropped, fault in the pages manually,
 	 * and retry.
 	 *
 	 * Unlike generic_file_read_iter, for reads, iomap_dio_rw can trigger
@@ -883,7 +885,7 @@ static ssize_t gfs2_file_direct_write(struct kiocb *iocb, struct iov_iter *from,
 	/*
 	 * In this function, we disable page faults when we're holding the
 	 * inode glock while doing I/O.  If a page fault occurs, we indicate
-	 * that the inode glock may be dropped, fault in the pages manually,
+	 * that the inode glock should be dropped, fault in the pages manually,
 	 * and retry.
 	 *
 	 * For writes, iomap_dio_rw only triggers manual page faults, so we
@@ -955,7 +957,7 @@ static ssize_t gfs2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
 	/*
 	 * In this function, we disable page faults when we're holding the
 	 * inode glock while doing I/O.  If a page fault occurs, we indicate
-	 * that the inode glock may be dropped, fault in the pages manually,
+	 * that the inode glock should be dropped, fault in the pages manually,
 	 * and retry.
 	 */
 
@@ -1022,7 +1024,7 @@ static ssize_t gfs2_file_buffered_write(struct kiocb *iocb,
 	/*
 	 * In this function, we disable page faults when we're holding the
 	 * inode glock while doing I/O.  If a page fault occurs, we indicate
-	 * that the inode glock may be dropped, fault in the pages manually,
+	 * that the inode glock should be dropped, fault in the pages manually,
 	 * and retry.
 	 */
 
@@ -1056,7 +1058,7 @@ retry:
 	}
 
 	pagefault_disable();
-	ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops);
+	ret = iomap_file_buffered_write(iocb, from, &gfs2_iomap_ops, NULL);
 	pagefault_enable();
 	if (ret > 0)
 		written += ret;
@@ -1585,6 +1587,7 @@ const struct file_operations gfs2_file_fops = {
 	.splice_write	= gfs2_file_splice_write,
 	.setlease	= simple_nosetlease,
 	.fallocate	= gfs2_fallocate,
+	.fop_flags	= FOP_ASYNC_LOCK,
 };
 
 const struct file_operations gfs2_dir_fops = {
@@ -1597,6 +1600,7 @@ const struct file_operations gfs2_dir_fops = {
 	.lock		= gfs2_lock,
 	.flock		= gfs2_flock,
 	.llseek		= default_llseek,
+	.fop_flags	= FOP_ASYNC_LOCK,
 };
 
 #endif /* CONFIG_GFS2_FS_LOCKING_DLM */