Unverified Commit 8b26c8c3 authored by Lizhi Xu's avatar Lizhi Xu Committed by Konstantin Komarov
Browse files

fs/ntfs3: Add missing direct_IO in ntfs_aops_cmpr 



The ntfs3 can use the page cache directly, so its address_space_operations
need direct_IO. Exit ntfs_direct_IO() if it is a compressed file.

Fixes: b432163e ("fs/ntfs3: Update inode->i_mapping->a_ops on compression state")
Reported-by: default avatar <syzbot+e36cc3297bd3afd25e19@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=e36cc3297bd3afd25e19


Signed-off-by: default avatarLizhi Xu <lizhi.xu@windriver.com>
Signed-off-by: default avatarKonstantin Komarov <almaz.alexandrovich@paragon-software.com>
parent af5cab0e

fs/ntfs3/inode.c

+5 −0
Original line number Diff line number Diff line
@@ -805,6 +805,10 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) 
		ret = 0;

		goto out;

	}

	if (is_compressed(ni)) {

		ret = 0;

		goto out;

	}



	ret = blockdev_direct_IO(iocb, inode, iter,

				 wr ? ntfs_get_block_direct_IO_W :
@@ -2068,5 +2072,6 @@ const struct address_space_operations ntfs_aops_cmpr = { 
	.read_folio	= ntfs_read_folio,

	.readahead	= ntfs_readahead,

	.dirty_folio	= block_dirty_folio,

	.direct_IO	= ntfs_direct_IO,

};

// clang-format on