On Wed, Jul 26, 2023 at 06:25:58PM +0800, Hao Xu wrote: > From: Hao Xu <howeyxu@xxxxxxxxxxx> > > To support nowait llseek(), IOMAP_NOWAIT semantics should be respected. > In xfs, xfs_seek_iomap_begin() is the only place which may be blocked > by ilock and extent loading. Let's turn it into trylock logic just like > what we've done in xfs_readdir(). > > Signed-off-by: Hao Xu <howeyxu@xxxxxxxxxxx> > --- > fs/xfs/xfs_iomap.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c > index 18c8f168b153..bbd7c6b27701 100644 > --- a/fs/xfs/xfs_iomap.c > +++ b/fs/xfs/xfs_iomap.c > @@ -1294,7 +1294,9 @@ xfs_seek_iomap_begin( > if (xfs_is_shutdown(mp)) > return -EIO; > > - lockmode = xfs_ilock_data_map_shared(ip); > + lockmode = xfs_ilock_data_map_shared_generic(ip, flags & IOMAP_NOWAIT); What does this magic XFS function I can't find anywhere in this patch set do? -Dave. -- Dave Chinner david@xxxxxxxxxxxxx
