On Fri, 2022-09-23 at 14:22 -0700, Darrick J. Wong wrote:
> On Wed, Sep 21, 2022 at 10:44:49PM -0700,
> allison.henderson@xxxxxxxxxx wrote:
> > From: Allison Henderson <allison.henderson@xxxxxxxxxx>
> >
> > This patch removes the parent pointer attribute during unlink
> >
> > Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> > Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> > ---
> > fs/xfs/libxfs/xfs_attr.c | 2 +-
> > fs/xfs/libxfs/xfs_attr.h | 1 +
> > fs/xfs/libxfs/xfs_parent.c | 17 +++++++++++++++++
> > fs/xfs/libxfs/xfs_parent.h | 4 ++++
> > fs/xfs/xfs_inode.c | 29 +++++++++++++++++++++++------
> > 5 files changed, 46 insertions(+), 7 deletions(-)
> >
> > diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> > index 805aaa5639d2..e967728d1ee7 100644
> > --- a/fs/xfs/libxfs/xfs_attr.c
> > +++ b/fs/xfs/libxfs/xfs_attr.c
> > @@ -946,7 +946,7 @@ xfs_attr_defer_replace(
> > }
> >
> > /* Removes an attribute for an inode as a deferred operation */
> > -static int
> > +int
> > xfs_attr_defer_remove(
> > struct xfs_da_args *args)
> > {
> > diff --git a/fs/xfs/libxfs/xfs_attr.h b/fs/xfs/libxfs/xfs_attr.h
> > index 0cf23f5117ad..033005542b9e 100644
> > --- a/fs/xfs/libxfs/xfs_attr.h
> > +++ b/fs/xfs/libxfs/xfs_attr.h
> > @@ -545,6 +545,7 @@ bool xfs_attr_is_leaf(struct xfs_inode *ip);
> > int xfs_attr_get_ilocked(struct xfs_da_args *args);
> > int xfs_attr_get(struct xfs_da_args *args);
> > int xfs_attr_defer_add(struct xfs_da_args *args);
> > +int xfs_attr_defer_remove(struct xfs_da_args *args);
> > int xfs_attr_set(struct xfs_da_args *args);
> > int xfs_attr_set_iter(struct xfs_attr_intent *attr);
> > int xfs_attr_remove_iter(struct xfs_attr_intent *attr);
> > diff --git a/fs/xfs/libxfs/xfs_parent.c
> > b/fs/xfs/libxfs/xfs_parent.c
> > index dddbf096a4b5..378fa227b87f 100644
> > --- a/fs/xfs/libxfs/xfs_parent.c
> > +++ b/fs/xfs/libxfs/xfs_parent.c
> > @@ -124,6 +124,23 @@ xfs_parent_defer_add(
> > return xfs_attr_defer_add(args);
> > }
> >
> > +int
> > +xfs_parent_defer_remove(
> > + struct xfs_trans *tp,
> > + struct xfs_inode *dp,
> > + struct xfs_parent_defer *parent,
> > + xfs_dir2_dataptr_t diroffset,
> > + struct xfs_inode *child)
> > +{
> > + struct xfs_da_args *args = &parent->args;
> > +
> > + xfs_init_parent_name_rec(&parent->rec, dp, diroffset);
> > + args->trans = tp;
> > + args->dp = child;
> > + args->hashval = xfs_da_hashname(args->name, args->namelen);
> > + return xfs_attr_defer_remove(args);
> > +}
> > +
> > void
> > xfs_parent_cancel(
> > xfs_mount_t *mp,
> > diff --git a/fs/xfs/libxfs/xfs_parent.h
> > b/fs/xfs/libxfs/xfs_parent.h
> > index 971044458f8a..79d3fabb5e56 100644
> > --- a/fs/xfs/libxfs/xfs_parent.h
> > +++ b/fs/xfs/libxfs/xfs_parent.h
> > @@ -27,6 +27,10 @@ int xfs_parent_init(xfs_mount_t *mp, struct
> > xfs_parent_defer **parentp);
> > int xfs_parent_defer_add(struct xfs_trans *tp, struct
> > xfs_parent_defer *parent,
> > struct xfs_inode *dp, struct xfs_name
> > *parent_name,
> > xfs_dir2_dataptr_t diroffset, struct
> > xfs_inode *child);
> > +int xfs_parent_defer_remove(struct xfs_trans *tp, struct xfs_inode
> > *dp,
> > + struct xfs_parent_defer *parent,
> > + xfs_dir2_dataptr_t diroffset,
> > + struct xfs_inode *child);
> > void xfs_parent_cancel(xfs_mount_t *mp, struct xfs_parent_defer
> > *parent);
> >
> > #endif /* __XFS_PARENT_H__ */
> > diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> > index af3f5edb7319..1a35dc972d4d 100644
> > --- a/fs/xfs/xfs_inode.c
> > +++ b/fs/xfs/xfs_inode.c
> > @@ -2465,16 +2465,18 @@ xfs_iunpin_wait(
> > */
> > int
> > xfs_remove(
> > - xfs_inode_t *dp,
> > + struct xfs_inode *dp,
> > struct xfs_name *name,
> > - xfs_inode_t *ip)
> > + struct xfs_inode *ip)
> > {
> > - xfs_mount_t *mp = dp->i_mount;
> > - xfs_trans_t *tp = NULL;
> > + struct xfs_mount *mp = dp->i_mount;
> > + struct xfs_trans *tp = NULL;
> > int is_dir = S_ISDIR(VFS_I(ip)-
> > >i_mode);
> > int dontcare;
> > int error = 0;
> > uint resblks;
> > + xfs_dir2_dataptr_t dir_offset;
> > + struct xfs_parent_defer *parent = NULL;
> >
> > trace_xfs_remove(dp, name);
> >
> > @@ -2489,6 +2491,12 @@ xfs_remove(
> > if (error)
> > goto std_return;
> >
> > + if (xfs_has_parent(mp)) {
> > + error = xfs_parent_init(mp, &parent);
> > + if (error)
> > + goto std_return;
> > + }
> > +
> > /*
> > * We try to get the real space reservation first, allowing
> > for
> > * directory btree deletion(s) implying possible bmap
> > insert(s). If we
>
> Same thing here:
>
> unsigned int
> xfs_remove_space_res(
> struct xfs_mount *mp,
> unsigned int namelen)
> {
> unsigned int ret = XFS_DIRREMOVE_SPACE_RES(mp);
>
> if (xfs_has_parent(mp))
> ret += xfs_pptr_calc_space_res(mp, namelen);
>
> return ret;
> }
>
> xfs_remove(..)
> {
> /* ... */
>
> resblks = xfs_remove_space_res(mp, name->len);
> error = xfs_trans_alloc_dir(dp, &M_RES(mp)->tr_remove, ip,
> &resblks, &tp, &dontcare);
> /* removal code... */
> }
Ok, will add these helpers too. Thanks!
Allison
>
> --D
>
> > @@ -2505,7 +2513,7 @@ xfs_remove(
> > &tp, &dontcare);
> > if (error) {
> > ASSERT(error != -ENOSPC);
> > - goto std_return;
> > + goto drop_incompat;
> > }
> >
> > /*
> > @@ -2559,12 +2567,18 @@ xfs_remove(
> > if (error)
> > goto out_trans_cancel;
> >
> > - error = xfs_dir_removename(tp, dp, name, ip->i_ino,
> > resblks, NULL);
> > + error = xfs_dir_removename(tp, dp, name, ip->i_ino,
> > resblks, &dir_offset);
> > if (error) {
> > ASSERT(error != -ENOENT);
> > goto out_trans_cancel;
> > }
> >
> > + if (parent) {
> > + error = xfs_parent_defer_remove(tp, dp, parent,
> > dir_offset, ip);
> > + if (error)
> > + goto out_trans_cancel;
> > + }
> > +
> > /*
> > * If this is a synchronous mount, make sure that the
> > * remove transaction goes to disk before returning to
> > @@ -2589,6 +2603,9 @@ xfs_remove(
> > out_unlock:
> > xfs_iunlock(ip, XFS_ILOCK_EXCL);
> > xfs_iunlock(dp, XFS_ILOCK_EXCL);
> > + drop_incompat:
> > + if (parent)
> > + xfs_parent_cancel(mp, parent);
> > std_return:
> > return error;
> > }
> > --
> > 2.25.1
> >
