5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeff Layton jlayton@kernel.org
[ Upstream commit c6593366c0bf222be9c7561354dfb921c611745e ]
An error from break_lease is non-fatal, so we needn't destroy the nfsd_file in that case. Just put the reference like we normally would and return the error.
Signed-off-by: Jeff Layton jlayton@kernel.org Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/filecache.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index d61c8223082a4..43bb2fd47cf58 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -1101,7 +1101,7 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp, nf = nfsd_file_alloc(&key, may_flags); if (!nf) { status = nfserr_jukebox; - goto out_status; + goto out; }
ret = rhashtable_lookup_insert_key(&nfsd_file_rhash_tbl, @@ -1110,13 +1110,11 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp, if (likely(ret == 0)) goto open_file;
- nfsd_file_slab_free(&nf->nf_rcu); - nf = NULL; if (ret == -EEXIST) goto retry; trace_nfsd_file_insert_err(rqstp, key.inode, may_flags, ret); status = nfserr_jukebox; - goto out_status; + goto construction_err;
wait_for_construction: wait_on_bit(&nf->nf_flags, NFSD_FILE_PENDING, TASK_UNINTERRUPTIBLE); @@ -1126,29 +1124,25 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp, trace_nfsd_file_cons_err(rqstp, key.inode, may_flags, nf); if (!open_retry) { status = nfserr_jukebox; - goto out; + goto construction_err; } open_retry = false; - if (refcount_dec_and_test(&nf->nf_ref)) - nfsd_file_free(nf); goto retry; } - this_cpu_inc(nfsd_file_cache_hits);
status = nfserrno(nfsd_open_break_lease(file_inode(nf->nf_file), may_flags)); + if (status != nfs_ok) { + nfsd_file_put(nf); + nf = NULL; + } + out: if (status == nfs_ok) { this_cpu_inc(nfsd_file_acquisitions); nfsd_file_check_write_error(nf); *pnf = nf; - } else { - if (refcount_dec_and_test(&nf->nf_ref)) - nfsd_file_free(nf); - nf = NULL; } - -out_status: put_cred(key.cred); trace_nfsd_file_acquire(rqstp, key.inode, may_flags, nf, status); return status; @@ -1178,6 +1172,13 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp, if (status != nfs_ok) nfsd_file_unhash(nf); clear_and_wake_up_bit(NFSD_FILE_PENDING, &nf->nf_flags); + if (status == nfs_ok) + goto out; + +construction_err: + if (refcount_dec_and_test(&nf->nf_ref)) + nfsd_file_free(nf); + nf = NULL; goto out; }