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| author | Olga Kornievskaia <kolga@netapp.com> | 2018-10-04 14:45:00 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2018-10-05 09:34:36 -0400 |
| commit | 44f411c353bf6d98d5a34f8f1b8605d43b2e50b8 (patch) | |
| tree | 6e6d91e3889f499a038e9ad46716cccd9eeb49b3 | |
| parent | 21924765862a0871908a35cb0e53e2e1c169b888 (diff) | |
| download | lwn-44f411c353bf6d98d5a34f8f1b8605d43b2e50b8.tar.gz lwn-44f411c353bf6d98d5a34f8f1b8605d43b2e50b8.zip | |
NFSv4.x: fix lock recovery during delegation recall
Running "./nfstest_delegation --runtest recall26" uncovers that
client doesn't recover the lock when we have an appending open,
where the initial open got a write delegation.
Instead of checking for the passed in open context against
the file lock's open context. Check that the state is the same.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
| -rw-r--r-- | fs/nfs/delegation.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 76d205d1c7bc..07b839560576 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -93,7 +93,7 @@ int nfs4_check_delegation(struct inode *inode, fmode_t flags) return nfs4_do_check_delegation(inode, flags, false); } -static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) +static int nfs_delegation_claim_locks(struct nfs4_state *state, const nfs4_stateid *stateid) { struct inode *inode = state->inode; struct file_lock *fl; @@ -108,7 +108,7 @@ static int nfs_delegation_claim_locks(struct nfs_open_context *ctx, struct nfs4_ spin_lock(&flctx->flc_lock); restart: list_for_each_entry(fl, list, fl_list) { - if (nfs_file_open_context(fl->fl_file) != ctx) + if (nfs_file_open_context(fl->fl_file)->state != state) continue; spin_unlock(&flctx->flc_lock); status = nfs4_lock_delegation_recall(fl, state, stateid); @@ -156,7 +156,7 @@ again: seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); err = nfs4_open_delegation_recall(ctx, state, stateid, type); if (!err) - err = nfs_delegation_claim_locks(ctx, state, stateid); + err = nfs_delegation_claim_locks(state, stateid); if (!err && read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) err = -EAGAIN; mutex_unlock(&sp->so_delegreturn_mutex); |