[PATCH] afs: Enable multipage folio support

From: David Howells
Date: Sun Apr 03 2022 - 13:39:03 EST


Enable multipage folio support for the afs filesystem. This makes use of
Matthew Wilcox's latest folio changes.

Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Acked-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Tested-by: kafs-testing@xxxxxxxxxxxx
cc: Marc Dionne <marc.dionne@xxxxxxxxxxxx>
cc: linux-afs@xxxxxxxxxxxxxxxxxxx
Link: https://lore.kernel.org/lkml/2274528.1645833226@xxxxxxxxxxxxxxxxxxxxxx/
---

fs/afs/inode.c | 2 ++
fs/afs/write.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 2fe402483ad5..c899977493b4 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -104,12 +104,14 @@ static int afs_inode_init_from_status(struct afs_operation *op,
inode->i_op = &afs_file_inode_operations;
inode->i_fop = &afs_file_operations;
inode->i_mapping->a_ops = &afs_file_aops;
+ mapping_set_large_folios(inode->i_mapping);
break;
case AFS_FTYPE_DIR:
inode->i_mode = S_IFDIR | (status->mode & S_IALLUGO);
inode->i_op = &afs_dir_inode_operations;
inode->i_fop = &afs_dir_file_operations;
inode->i_mapping->a_ops = &afs_dir_aops;
+ mapping_set_large_folios(inode->i_mapping);
break;
case AFS_FTYPE_SYMLINK:
/* Symlinks with a mode of 0644 are actually mountpoints. */
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 6bcf1475511b..445a79db0192 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -91,7 +91,7 @@ int afs_write_begin(struct file *file, struct address_space *mapping,
goto flush_conflicting_write;
}

- *_page = &folio->page;
+ *_page = folio_file_page(folio, pos / PAGE_SIZE);
_leave(" = 0");
return 0;