Commit 8549a263 authored by David Howells's avatar David Howells Committed by Linus Torvalds
Browse files

afs: Enable multipage folio support 



Enable multipage folio support for the afs filesystem.

Support has already been implemented in netfslib, fscache and cachefiles
and in most of afs, but I've waited for Matthew Wilcox's latest folio
changes.

Note that it does require a change to afs_write_begin() to return the
correct subpage.  This is a "temporary" change as we're working on
getting rid of the need for ->write_begin() and ->write_end()
completely, at least as far as network filesystems are concerned - but
it doesn't prevent afs from making use of the capability.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Acked-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: default avatar <kafs-testing@auristor.com>
Cc: Marc Dionne <marc.dionne@auristor.com>
Cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/lkml/2274528.1645833226@warthog.procyon.org.uk/


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f6eb0fed

fs/afs/inode.c

+2 −0
Original line number Diff line number Diff line
@@ -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. */

fs/afs/write.c

+1 −1
Original line number Diff line number Diff line
@@ -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;