From b8232d3315ec746e3b5d4c9252541567e57a509b Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Thu, 15 Feb 2018 15:29:15 -0500 Subject: [PATCH] nfsd: simplify put of fi_deleg_file fi_delegees is basically just a reference count on users of fi_deleg_file, which is cleared when fi_delegees goes to zero. The fi_deleg_file check here is redundant. Also add an assertion to make sure we don't have unbalanced puts. Signed-off-by: J. Bruce Fields Reviewed-by: Jeff Layton --- fs/nfsd/nfs4state.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 16efbe2..9072d0f 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -879,9 +879,12 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp) { struct file *filp = NULL; + WARN_ON_ONCE(!fp->fi_delegees); + spin_lock(&fp->fi_lock); - if (fp->fi_deleg_file && --fp->fi_delegees == 0) + if (--fp->fi_delegees == 0) { swap(filp, fp->fi_deleg_file); + } spin_unlock(&fp->fi_lock); if (filp) { -- 2.7.4