From b49e084d8c7df1632bb2b94ae1a21c8a4cf2d8a4 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 29 Jul 2014 21:34:11 -0400 Subject: [PATCH] nfsd: do filp_close in sc_free callback for lock stateids Releasing locks when we unhash the stateid instead of doing so only when the stateid is actually released will be problematic in later patches when we need to protect the unhashing with spinlocks. Move it into the sc_free operation instead. Signed-off-by: Jeff Layton Reviewed-by: Christoph Hellwig Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index bb37cc4dd573..8ce5894133aa 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -502,7 +502,7 @@ out_free: return NULL; } -static struct nfs4_ol_stateid * nfs4_alloc_stateid(struct nfs4_client *clp) +static struct nfs4_ol_stateid * nfs4_alloc_open_stateid(struct nfs4_client *clp) { struct nfs4_stid *stid; struct nfs4_ol_stateid *stp; @@ -907,16 +907,23 @@ static void nfs4_free_ol_stateid(struct nfs4_stid *stid) kmem_cache_free(stateid_slab, stid); } -static void __release_lock_stateid(struct nfs4_ol_stateid *stp) +static void nfs4_free_lock_stateid(struct nfs4_stid *stid) { + struct nfs4_ol_stateid *stp = openlockstateid(stid); + struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); struct file *file; + file = find_any_file(stp->st_stid.sc_file); + if (file) + filp_close(file, (fl_owner_t)lo); + nfs4_free_ol_stateid(stid); +} + +static void __release_lock_stateid(struct nfs4_ol_stateid *stp) +{ list_del(&stp->st_locks); unhash_generic_stateid(stp); unhash_stid(&stp->st_stid); - file = find_any_file(stp->st_stid.sc_file); - if (file) - filp_close(file, (fl_owner_t)lockowner(stp->st_stateowner)); nfs4_put_stid(&stp->st_stid); } @@ -3287,7 +3294,7 @@ new_owner: return nfserr_jukebox; open->op_openowner = oo; alloc_stateid: - open->op_stp = nfs4_alloc_stateid(clp); + open->op_stp = nfs4_alloc_open_stateid(clp); if (!open->op_stp) return nfserr_jukebox; return nfs_ok; @@ -4703,17 +4710,20 @@ alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct inode *inode, struct nfs4_ol_stateid *open_stp) { + struct nfs4_stid *s; struct nfs4_ol_stateid *stp; struct nfs4_client *clp = lo->lo_owner.so_client; - stp = nfs4_alloc_stateid(clp); - if (stp == NULL) + s = nfs4_alloc_stid(clp, stateid_slab); + if (s == NULL) return NULL; + stp = openlockstateid(s); stp->st_stid.sc_type = NFS4_LOCK_STID; list_add(&stp->st_perstateowner, &lo->lo_owner.so_stateids); stp->st_stateowner = &lo->lo_owner; get_nfs4_file(fp); stp->st_stid.sc_file = fp; + stp->st_stid.sc_free = nfs4_free_lock_stateid; stp->st_access_bmap = 0; stp->st_deny_bmap = open_stp->st_deny_bmap; stp->st_openstp = open_stp; -- 2.34.1