I don't think it makes much sense to put this one in stable. Without the rest of the pagecache patches the race doesn't exist.
Martin On Wed, May 22, 2019 at 03:15:25PM -0400, Sasha Levin wrote: > From: Martin Brandenburg <[email protected]> > > [ Upstream commit 33713cd09ccdc1e01b10d0782ae60200d4989553 ] > > Otherwise we race with orangefs_writepage/orangefs_writepages > which and does not expect i_size < page_offset. > > Fixes xfstests generic/129. > > Signed-off-by: Martin Brandenburg <[email protected]> > Signed-off-by: Mike Marshall <[email protected]> > Signed-off-by: Sasha Levin <[email protected]> > --- > fs/orangefs/inode.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c > index c3334eca18c7e..3260f757c0803 100644 > --- a/fs/orangefs/inode.c > +++ b/fs/orangefs/inode.c > @@ -172,7 +172,11 @@ static int orangefs_setattr_size(struct inode *inode, > struct iattr *iattr) > } > orig_size = i_size_read(inode); > > - truncate_setsize(inode, iattr->ia_size); > + /* This is truncate_setsize in a different order. */ > + truncate_pagecache(inode, iattr->ia_size); > + i_size_write(inode, iattr->ia_size); > + if (iattr->ia_size > orig_size) > + pagecache_isize_extended(inode, orig_size, iattr->ia_size); > > new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE); > if (!new_op) > -- > 2.20.1 >
