| Message ID | 20170305133535.6516-2-jlayton@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sun, 5 Mar 2017 08:35:33 -0500, Jeff Layton <jlayton@redhat.com> wrote: > In a later patch, we're going to want to make the fsync codepath not do > a TestClearPageError call as that can override the error set in the > address space. To do that though, we need to ensure that filesystems > that are relying on the PG_error bit for reporting writeback errors > also set an error in the address space. > > The only place I've found that looks potentially problematic is this > spot in nilfs2. Ensure that it sets an error in the mapping in addition > to setting PageError. > > Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Agreed that nilfs2 needs this if the successive patch is applied. Thanks, Ryusuke Konishi > --- > fs/nilfs2/segment.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c > index bedcae2c28e6..c1041b07060e 100644 > --- a/fs/nilfs2/segment.c > +++ b/fs/nilfs2/segment.c > @@ -1743,6 +1743,7 @@ static void nilfs_end_page_io(struct page *page, int err) > } else { > __set_page_dirty_nobuffers(page); > SetPageError(page); > + mapping_set_error(page_mapping(page), err); > } > > end_page_writeback(page); > -- > 2.9.3 > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index bedcae2c28e6..c1041b07060e 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1743,6 +1743,7 @@ static void nilfs_end_page_io(struct page *page, int err) } else { __set_page_dirty_nobuffers(page); SetPageError(page); + mapping_set_error(page_mapping(page), err); } end_page_writeback(page);
In a later patch, we're going to want to make the fsync codepath not do a TestClearPageError call as that can override the error set in the address space. To do that though, we need to ensure that filesystems that are relying on the PG_error bit for reporting writeback errors also set an error in the address space. The only place I've found that looks potentially problematic is this spot in nilfs2. Ensure that it sets an error in the mapping in addition to setting PageError. Signed-off-by: Jeff Layton <jlayton@redhat.com> --- fs/nilfs2/segment.c | 1 + 1 file changed, 1 insertion(+)