If the cred assigned to the delegation that we're updating differs
from the one we're updating too, then we need to update that field
too.
Signed-off-by: Trond Myklebust <[email protected]>
---
fs/nfs/delegation.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index d856326836a2..968792482a1e 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -358,6 +358,18 @@ nfs_inode_detach_delegation(struct inode *inode)
return delegation;
}
+static void
+nfs_update_delegation_cred(struct nfs_delegation *delegation,
+ const struct cred *cred)
+{
+ const struct cred *old;
+
+ if (cred_fscmp(delegation->cred, cred) != 0) {
+ old = xchg(&delegation->cred, get_cred(cred));
+ put_cred(old);
+ }
+}
+
static void
nfs_update_inplace_delegation(struct nfs_delegation *delegation,
const struct nfs_delegation *update)
@@ -366,8 +378,14 @@ nfs_update_inplace_delegation(struct nfs_delegation *delegation,
delegation->stateid.seqid = update->stateid.seqid;
smp_wmb();
delegation->type = update->type;
- if (test_and_clear_bit(NFS_DELEGATION_REVOKED, &delegation->flags))
+ delegation->pagemod_limit = update->pagemod_limit;
+ if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) {
+ delegation->change_attr = update->change_attr;
+ nfs_update_delegation_cred(delegation, update->cred);
+ /* smp_mb__before_atomic() is implicit due to xchg() */
+ clear_bit(NFS_DELEGATION_REVOKED, &delegation->flags);
atomic_long_inc(&nfs_active_delegations);
+ }
}
}
--
2.24.1
If the cred assigned to the layout that we're updating differs from
the one used to retrieve the new layout segment, then we need to
update the layout plh_lc_cred field.
Signed-off-by: Trond Myklebust <[email protected]>
---
fs/nfs/callback_proc.c | 2 +-
fs/nfs/pnfs.c | 20 ++++++++++++++++----
fs/nfs/pnfs.h | 1 +
3 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index cd4c6bc81cae..b6ffac9963c8 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -280,7 +280,7 @@ static u32 initiate_file_draining(struct nfs_client *clp,
goto unlock;
}
- pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
+ pnfs_set_layout_stateid(lo, &args->cbl_stateid, NULL, true);
switch (pnfs_mark_matching_lsegs_return(lo, &free_me_list,
&args->cbl_range,
be32_to_cpu(args->cbl_stateid.seqid))) {
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 542ea8dfd1bc..b21eb4882846 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -903,10 +903,21 @@ pnfs_destroy_all_layouts(struct nfs_client *clp)
pnfs_destroy_layouts_byclid(clp, false);
}
+static void
+pnfs_set_layout_cred(struct pnfs_layout_hdr *lo, const struct cred *cred)
+{
+ const struct cred *old;
+
+ if (cred && cred_fscmp(lo->plh_lc_cred, cred) != 0) {
+ old = xchg(&lo->plh_lc_cred, get_cred(cred));
+ put_cred(old);
+ }
+}
+
/* update lo->plh_stateid with new if is more recent */
void
pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
- bool update_barrier)
+ const struct cred *cred, bool update_barrier)
{
u32 oldseq, newseq, new_barrier = 0;
@@ -914,6 +925,7 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
newseq = be32_to_cpu(new->seqid);
if (!pnfs_layout_is_valid(lo)) {
+ pnfs_set_layout_cred(lo, cred);
nfs4_stateid_copy(&lo->plh_stateid, new);
lo->plh_barrier = newseq;
pnfs_clear_layoutreturn_info(lo);
@@ -1109,7 +1121,7 @@ void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo,
pnfs_mark_matching_lsegs_invalid(lo, &freeme, range, seq);
pnfs_free_returned_lsegs(lo, &freeme, range, seq);
- pnfs_set_layout_stateid(lo, stateid, true);
+ pnfs_set_layout_stateid(lo, stateid, NULL, true);
} else
pnfs_mark_layout_stateid_invalid(lo, &freeme);
out_unlock:
@@ -2323,14 +2335,14 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
if (!pnfs_layout_is_valid(lo)) {
/* We have a completely new layout */
- pnfs_set_layout_stateid(lo, &res->stateid, true);
+ pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, true);
} else if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) {
/* existing state ID, make sure the sequence number matches. */
if (pnfs_layout_stateid_blocked(lo, &res->stateid)) {
dprintk("%s forget reply due to sequence\n", __func__);
goto out_forget;
}
- pnfs_set_layout_stateid(lo, &res->stateid, false);
+ pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, false);
} else {
/*
* We got an entirely new state ID. Mark all segments for the
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 0fafdadc9c8d..cfb89d47c79d 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -267,6 +267,7 @@ bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
const nfs4_stateid *new,
+ const struct cred *cred,
bool update_barrier);
int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
struct list_head *tmp_list,
--
2.24.1