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nfsd: Don't keep looking up unhashed files in the nfsd file cache #8

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merged 1 commit into from
May 5, 2021
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nfsd: Don't keep looking up unhashed files in the nfsd file cache #8

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17 changes: 15 additions & 2 deletions fs/nfsd/filecache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -751,6 +751,8 @@ nfsd_file_find_locked(struct inode *inode, unsigned int may_flags,
continue;
if (!nfsd_match_cred(nf->nf_cred, current_cred()))
continue;
if (!test_bit(NFSD_FILE_HASHED, &nf->nf_flags))
continue;
if (nfsd_file_get(nf) != NULL)
return nf;
}
Expand Down Expand Up @@ -816,6 +818,9 @@ nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
if (!new) {
trace_nfsd_file_acquire(rqstp, hashval, inode, may_flags,
NULL, nfserr_jukebox);
pr_warn_ratelimited("nfsd: nfsd_file_acquire alloc failed XID, "
"%08x, nfserr_jukebox\n",
be32_to_cpu(rqstp->rq_xid));
return nfserr_jukebox;
}

Expand All @@ -833,6 +838,10 @@ nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
if (!test_bit(NFSD_FILE_HASHED, &nf->nf_flags)) {
if (!retry) {
status = nfserr_jukebox;
pr_warn_ratelimited("nfsd: nfsd_file_acquire "
"construction failed, XID %08x, "
"nfserr_jukebox\n",
be32_to_cpu(rqstp->rq_xid));
goto out;
}
retry = false;
Expand Down Expand Up @@ -882,11 +891,15 @@ nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
atomic_long_inc(&nfsd_filecache_count);

nf->nf_mark = nfsd_file_mark_find_or_create(nf);
if (nf->nf_mark)
if (nf->nf_mark) {
status = nfsd_open_verified(rqstp, fhp, S_IFREG,
may_flags, &nf->nf_file);
else
} else {
pr_warn_ratelimited("nfsd: nfsd_file_acquire no file mark, XID "
"%08x, nfserr_jukebox\n",
be32_to_cpu(rqstp->rq_xid));
status = nfserr_jukebox;
}
/*
* If construction failed, or we raced with a call to unlink()
* then unhash.
Expand Down