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| author | Jeff Layton <jlayton@kernel.org> | 2023-01-06 18:33:47 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 17:20:21 +0300 |
| commit | 70f62231cdfd52357836733dd31db787e0412ab2 (patch) | |
| tree | 3195f34c1dcd607aed17b4720af32f51c8ae7753 /fs/nfsd/filecache.c | |
| parent | df24ac7a2e3a9d0bc68f1756a880e50bfe4b4522 (diff) | |
| download | linux-70f62231cdfd52357836733dd31db787e0412ab2.tar.xz | |
nfsd: allow nfsd_file_get to sanely handle a NULL pointer
...and remove some now-useless NULL pointer checks in its callers.
Suggested-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/filecache.c')
| -rw-r--r-- | fs/nfsd/filecache.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index c0950edb26b0..ecc32105c3ab 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -452,7 +452,7 @@ static bool nfsd_file_lru_remove(struct nfsd_file *nf) struct nfsd_file * nfsd_file_get(struct nfsd_file *nf) { - if (likely(refcount_inc_not_zero(&nf->nf_ref))) + if (nf && refcount_inc_not_zero(&nf->nf_ref)) return nf; return NULL; } @@ -1107,8 +1107,7 @@ retry: rcu_read_lock(); nf = rhashtable_lookup(&nfsd_file_rhash_tbl, &key, nfsd_file_rhash_params); - if (nf) - nf = nfsd_file_get(nf); + nf = nfsd_file_get(nf); rcu_read_unlock(); if (nf) { |