1 files changed, 40 insertions, 41 deletions

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 68d11c295dd3..1d65f6ef00ca 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -275,17 +275,16 @@ out:
 	return ret;
 }
 
-static int ocfs2_readpage(struct file *file, struct page *page)
+static int ocfs2_read_folio(struct file *file, struct folio *folio)
 {
-	struct inode *inode = page->mapping->host;
+	struct inode *inode = folio->mapping->host;
 	struct ocfs2_inode_info *oi = OCFS2_I(inode);
-	loff_t start = (loff_t)page->index << PAGE_SHIFT;
+	loff_t start = folio_pos(folio);
 	int ret, unlock = 1;
 
-	trace_ocfs2_readpage((unsigned long long)oi->ip_blkno,
-			     (page ? page->index : 0));
+	trace_ocfs2_readpage((unsigned long long)oi->ip_blkno, folio->index);
 
-	ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page);
+	ret = ocfs2_inode_lock_with_page(inode, NULL, 0, &folio->page);
 	if (ret != 0) {
 		if (ret == AOP_TRUNCATED_PAGE)
 			unlock = 0;
@@ -295,11 +294,11 @@ static int ocfs2_readpage(struct file *file, struct page *page)
 
 	if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
 		/*
-		 * Unlock the page and cycle ip_alloc_sem so that we don't
+		 * Unlock the folio and cycle ip_alloc_sem so that we don't
 		 * busyloop waiting for ip_alloc_sem to unlock
 		 */
 		ret = AOP_TRUNCATED_PAGE;
-		unlock_page(page);
+		folio_unlock(folio);
 		unlock = 0;
 		down_read(&oi->ip_alloc_sem);
 		up_read(&oi->ip_alloc_sem);
@@ -309,24 +308,24 @@ static int ocfs2_readpage(struct file *file, struct page *page)
 	/*
 	 * i_size might have just been updated as we grabed the meta lock.  We
 	 * might now be discovering a truncate that hit on another node.
-	 * block_read_full_page->get_block freaks out if it is asked to read
+	 * block_read_full_folio->get_block freaks out if it is asked to read
 	 * beyond the end of a file, so we check here.  Callers
 	 * (generic_file_read, vm_ops->fault) are clever enough to check i_size
-	 * and notice that the page they just read isn't needed.
+	 * and notice that the folio they just read isn't needed.
 	 *
 	 * XXX sys_readahead() seems to get that wrong?
 	 */
 	if (start >= i_size_read(inode)) {
-		zero_user(page, 0, PAGE_SIZE);
-		SetPageUptodate(page);
+		folio_zero_segment(folio, 0, folio_size(folio));
+		folio_mark_uptodate(folio);
 		ret = 0;
 		goto out_alloc;
 	}
 
 	if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
-		ret = ocfs2_readpage_inline(inode, page);
+		ret = ocfs2_readpage_inline(inode, &folio->page);
 	else
-		ret = block_read_full_page(page, ocfs2_get_block);
+		ret = block_read_full_folio(folio, ocfs2_get_block);
 	unlock = 0;
 
 out_alloc:
@@ -335,7 +334,7 @@ out_inode_unlock:
 	ocfs2_inode_unlock(inode, 0);
 out:
 	if (unlock)
-		unlock_page(page);
+		folio_unlock(folio);
 	return ret;
 }
 
@@ -497,11 +496,11 @@ bail:
 	return status;
 }
 
-static int ocfs2_releasepage(struct page *page, gfp_t wait)
+static bool ocfs2_release_folio(struct folio *folio, gfp_t wait)
 {
-	if (!page_has_buffers(page))
-		return 0;
-	return try_to_free_buffers(page);
+	if (!folio_buffers(folio))
+		return false;
+	return try_to_free_buffers(folio);
 }
 
 static void ocfs2_figure_cluster_boundaries(struct ocfs2_super *osb,
@@ -637,7 +636,7 @@ int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
 			   !buffer_new(bh) &&
 			   ocfs2_should_read_blk(inode, page, block_start) &&
 			   (block_start < from || block_end > to)) {
-			ll_rw_block(REQ_OP_READ, 0, 1, &bh);
+			bh_read_nowait(bh, 0);
 			*wait_bh++=bh;
 		}
 
@@ -1799,20 +1798,20 @@ try_again:
 	 */
 	ret = ocfs2_grab_pages_for_write(mapping, wc, wc->w_cpos, pos, len,
 					 cluster_of_pages, mmap_page);
-	if (ret && ret != -EAGAIN) {
-		mlog_errno(ret);
-		goto out_quota;
-	}
+	if (ret) {
+		/*
+		 * ocfs2_grab_pages_for_write() returns -EAGAIN if it could not lock
+		 * the target page. In this case, we exit with no error and no target
+		 * page. This will trigger the caller, page_mkwrite(), to re-try
+		 * the operation.
+		 */
+		if (type == OCFS2_WRITE_MMAP && ret == -EAGAIN) {
+			BUG_ON(wc->w_target_page);
+			ret = 0;
+			goto out_quota;
+		}
 
-	/*
-	 * ocfs2_grab_pages_for_write() returns -EAGAIN if it could not lock
-	 * the target page. In this case, we exit with no error and no target
-	 * page. This will trigger the caller, page_mkwrite(), to re-try
-	 * the operation.
-	 */
-	if (ret == -EAGAIN) {
-		BUG_ON(wc->w_target_page);
-		ret = 0;
+		mlog_errno(ret);
 		goto out_quota;
 	}
 
@@ -1881,7 +1880,7 @@ out:
 }
 
 static int ocfs2_write_begin(struct file *file, struct address_space *mapping,
-			     loff_t pos, unsigned len, unsigned flags,
+			     loff_t pos, unsigned len,
 			     struct page **pagep, void **fsdata)
 {
 	int ret;
@@ -1897,7 +1896,7 @@ static int ocfs2_write_begin(struct file *file, struct address_space *mapping,
 	/*
 	 * Take alloc sem here to prevent concurrent lookups. That way
 	 * the mapping, zeroing and tree manipulation within
-	 * ocfs2_write() will be safe against ->readpage(). This
+	 * ocfs2_write() will be safe against ->read_folio(). This
 	 * should also serve to lock out allocation from a shared
 	 * writeable region.
 	 */
@@ -2311,7 +2310,7 @@ 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));
 
@@ -2453,17 +2452,17 @@ static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 }
 
 const struct address_space_operations ocfs2_aops = {
-	.set_page_dirty		= __set_page_dirty_buffers,
-	.readpage		= ocfs2_readpage,
+	.dirty_folio		= block_dirty_folio,
+	.read_folio		= ocfs2_read_folio,
 	.readahead		= ocfs2_readahead,
 	.writepage		= ocfs2_writepage,
 	.write_begin		= ocfs2_write_begin,
 	.write_end		= ocfs2_write_end,
 	.bmap			= ocfs2_bmap,
 	.direct_IO		= ocfs2_direct_IO,
-	.invalidatepage		= block_invalidatepage,
-	.releasepage		= ocfs2_releasepage,
-	.migratepage		= buffer_migrate_page,
+	.invalidate_folio	= block_invalidate_folio,
+	.release_folio		= ocfs2_release_folio,
+	.migrate_folio		= buffer_migrate_folio,
 	.is_partially_uptodate	= block_is_partially_uptodate,
 	.error_remove_page	= generic_error_remove_page,
 };