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| author |  Chuck Lever <chuck.lever@oracle.com>
| 2022-10-28 10:47:34 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com>
| 2022-11-28 12:54:47 -0500 |
| commit | 3341678f2fd6106055cead09e513fad6950a0d19 (patch) | |
| tree | 4237eb5856aee9d88f5f049e2afe240fe21b8f79 /fs/nfsd | |
| parent | NFSD: Clean up nfsd4_init_file() (diff) | |
| download | linux-3341678f2fd6106055cead09e513fad6950a0d19.tar.gz linux-3341678f2fd6106055cead09e513fad6950a0d19.tar.bz2 linux-3341678f2fd6106055cead09e513fad6950a0d19.zip | |
NFSD: Add a nfsd4_file_hash_remove() helper
Refactor to relocate hash deletion operation to a helper function
that is close to most other nfs4_file data structure operations.
The "noinline" annotation will become useful in a moment when the
hlist_del_rcu() is replaced with a more complex rhash remove
operation. It also guarantees that hash remove operations can be
traced with "-p function -l remove_nfs4_file_locked".
This also simplifies the organization of forward declarations: the
to-be-added rhashtable and its param structure will be defined
/after/ put_nfs4_file().
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index d63a4e5439c2..fb70cab33887 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -84,6 +84,7 @@ static bool check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) static void nfs4_free_ol_stateid(struct nfs4_stid *stid); void nfsd4_end_grace(struct nfsd_net *nn); static void _free_cpntf_state_locked(struct nfsd_net *nn, struct nfs4_cpntf_state *cps); +static void nfsd4_file_hash_remove(struct nfs4_file *fi); /* Locking: */ @@ -591,7 +592,7 @@ put_nfs4_file(struct nfs4_file *fi) might_lock(&state_lock); if (refcount_dec_and_lock(&fi->fi_ref, &state_lock)) { - hlist_del_rcu(&fi->fi_hash); + nfsd4_file_hash_remove(fi); spin_unlock(&state_lock); WARN_ON_ONCE(!list_empty(&fi->fi_clnt_odstate)); WARN_ON_ONCE(!list_empty(&fi->fi_delegations)); @@ -4749,6 +4750,11 @@ find_or_add_file(struct nfs4_file *new, struct svc_fh *fh) return insert_file(new, fh, hashval); } +static noinline_for_stack void nfsd4_file_hash_remove(struct nfs4_file *fi) +{ + hlist_del_rcu(&fi->fi_hash); +} + /* * Called to check deny when READ with all zero stateid or * WRITE with all zero or all one stateid |