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Commit 2b0bd505 authored by Andreas Gruenbacher's avatar Andreas Gruenbacher Committed by Greg Kroah-Hartman
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gfs2: Truncate address space when flipping GFS2_DIF_JDATA flag 



commit 7c9d9223802fbed4dee1ae301661bf346964c9d2 upstream.

Truncate an inode's address space when flipping the GFS2_DIF_JDATA flag:
depending on that flag, the pages in the address space will either use
buffer heads or iomap_folio_state structs, and we cannot mix the two.

Reported-by: default avatarKun Hu &lt;huk23@m.fudan.edu.cn&gt;, Jiaji Qin <jjtan24@m.fudan.edu.cn>
Signed-off-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d26c6ec1

fs/gfs2/file.c

+1 −0
Original line number Diff line number Diff line
@@ -271,6 +271,7 @@ static int do_gfs2_set_flags(struct file *filp, 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);

	}