From 7ae59edacf11ea8ec651cf6de2bf7d66a0013257 Mon Sep 17 00:00:00 2001 From: Oleg Drokin Date: Tue, 16 Feb 2016 00:46:56 -0500 Subject: [PATCH] staging/lustre/obdecho: Adjust NULL comparison codestyle All instances of "x == NULL" are changed to "!x" and "x != NULL" to "x" Also remove some redundant assertions. Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- .../lustre/lustre/obdecho/echo_client.c | 61 +++++++++---------- 1 file changed, 29 insertions(+), 32 deletions(-) diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c index 4ca82afaf157..ca87cc2e29a2 100644 --- a/drivers/staging/lustre/lustre/obdecho/echo_client.c +++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c @@ -146,7 +146,7 @@ static inline struct echo_thread_info *echo_env_info(const struct lu_env *env) struct echo_thread_info *info; info = lu_context_key_get(&env->le_ctx, &echo_thread_key); - LASSERT(info != NULL); + LASSERT(info); return info; } @@ -267,7 +267,7 @@ static void echo_page_completion(const struct lu_env *env, const struct cl_page_slice *slice, int ioret) { - LASSERT(slice->cpl_page->cp_sync_io != NULL); + LASSERT(slice->cpl_page->cp_sync_io); } static void echo_page_fini(const struct lu_env *env, @@ -393,13 +393,13 @@ static int echo_lock_init(const struct lu_env *env, struct echo_lock *el; el = kmem_cache_alloc(echo_lock_kmem, GFP_NOFS | __GFP_ZERO); - if (el != NULL) { + if (el) { cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops); el->el_object = cl2echo_obj(obj); INIT_LIST_HEAD(&el->el_chain); atomic_set(&el->el_refcount, 0); } - return el == NULL ? -ENOMEM : 0; + return !el ? -ENOMEM : 0; } static int echo_conf_set(const struct lu_env *env, struct cl_object *obj, @@ -439,7 +439,7 @@ static int echo_object_init(const struct lu_env *env, struct lu_object *obj, under = ed->ed_next; below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under); - if (below == NULL) + if (!below) return -ENOMEM; lu_object_add(obj, below); } @@ -470,12 +470,12 @@ static int echo_alloc_memmd(struct echo_device *ed, int lsm_size; /* If export is lov/osc then use their obd method */ - if (ed->ed_next != NULL) + if (ed->ed_next) return obd_alloc_memmd(ed->ed_ec->ec_exp, lsmp); /* OFD has no unpackmd method, do everything here */ lsm_size = lov_stripe_md_size(1); - LASSERT(*lsmp == NULL); + LASSERT(!*lsmp); *lsmp = kzalloc(lsm_size, GFP_NOFS); if (!*lsmp) return -ENOMEM; @@ -498,12 +498,11 @@ static int echo_free_memmd(struct echo_device *ed, struct lov_stripe_md **lsmp) int lsm_size; /* If export is lov/osc then use their obd method */ - if (ed->ed_next != NULL) + if (ed->ed_next) return obd_free_memmd(ed->ed_ec->ec_exp, lsmp); /* OFD has no unpackmd method, do everything here */ lsm_size = lov_stripe_md_size(1); - LASSERT(*lsmp != NULL); kfree((*lsmp)->lsm_oinfo[0]); kfree(*lsmp); *lsmp = NULL; @@ -562,9 +561,9 @@ static struct lu_object *echo_object_alloc(const struct lu_env *env, struct lu_object *obj = NULL; /* we're the top dev. */ - LASSERT(hdr == NULL); + LASSERT(!hdr); eco = kmem_cache_alloc(echo_object_kmem, GFP_NOFS | __GFP_ZERO); - if (eco != NULL) { + if (eco) { struct cl_object_header *hdr = &eco->eo_hdr; obj = &echo_obj2cl(eco)->co_lu; @@ -627,7 +626,7 @@ static void *echo_thread_key_init(const struct lu_context *ctx, struct echo_thread_info *info; info = kmem_cache_alloc(echo_thread_kmem, GFP_NOFS | __GFP_ZERO); - if (info == NULL) + if (!info) info = ERR_PTR(-ENOMEM); return info; } @@ -658,7 +657,7 @@ static void *echo_session_key_init(const struct lu_context *ctx, struct echo_session_info *session; session = kmem_cache_alloc(echo_session_kmem, GFP_NOFS | __GFP_ZERO); - if (session == NULL) + if (!session) session = ERR_PTR(-ENOMEM); return session; } @@ -715,11 +714,11 @@ static struct lu_device *echo_device_alloc(const struct lu_env *env, cleanup = 2; obd = class_name2obd(lustre_cfg_string(cfg, 0)); - LASSERT(obd != NULL); - LASSERT(env != NULL); + LASSERT(obd); + LASSERT(env); tgt = class_name2obd(lustre_cfg_string(cfg, 1)); - if (tgt == NULL) { + if (!tgt) { CERROR("Can not find tgt device %s\n", lustre_cfg_string(cfg, 1)); rc = -ENODEV; @@ -748,13 +747,12 @@ static struct lu_device *echo_device_alloc(const struct lu_env *env, /* if echo client is to be stacked upon ost device, the next is * NULL since ost is not a clio device so far */ - if (next != NULL && !lu_device_is_cl(next)) + if (next && !lu_device_is_cl(next)) next = NULL; tgt_type_name = tgt->obd_type->typ_name; - if (next != NULL) { - LASSERT(next != NULL); - if (next->ld_site != NULL) { + if (next) { + if (next->ld_site) { rc = -EBUSY; goto out; } @@ -1063,7 +1061,6 @@ static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed, struct list_head *el; int found = 0, still_used = 0; - LASSERT(ec != NULL); spin_lock(&ec->ec_lock); list_for_each(el, &ec->ec_locks) { ecl = list_entry(el, struct echo_lock, el_chain); @@ -1121,7 +1118,7 @@ static int cl_echo_object_brw(struct echo_object *eco, int rw, u64 offset, int i; LASSERT((offset & ~CFS_PAGE_MASK) == 0); - LASSERT(ed->ed_next != NULL); + LASSERT(ed->ed_next); env = cl_env_get(&refcheck); if (IS_ERR(env)) return PTR_ERR(env); @@ -1393,11 +1390,11 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, brw_flags = OBD_BRW_ASYNC; pga = kcalloc(npages, sizeof(*pga), GFP_NOFS); - if (pga == NULL) + if (!pga) return -ENOMEM; pages = kcalloc(npages, sizeof(*pages), GFP_NOFS); - if (pages == NULL) { + if (!pages) { kfree(pga); return -ENOMEM; } @@ -1406,11 +1403,11 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, i < npages; i++, pgp++, off += PAGE_CACHE_SIZE) { - LASSERT(pgp->pg == NULL); /* for cleanup */ + LASSERT(!pgp->pg); /* for cleanup */ rc = -ENOMEM; pgp->pg = alloc_page(gfp_mask); - if (pgp->pg == NULL) + if (!pgp->pg) goto out; pages[i] = pgp->pg; @@ -1425,7 +1422,7 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, } /* brw mode can only be used at client */ - LASSERT(ed->ed_next != NULL); + LASSERT(ed->ed_next); rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async); out: @@ -1433,7 +1430,7 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa, verify = 0; for (i = 0, pgp = pga; i < npages; i++, pgp++) { - if (pgp->pg == NULL) + if (!pgp->pg) continue; if (verify) { @@ -1475,7 +1472,7 @@ static int echo_client_prep_commit(const struct lu_env *env, lnb = kcalloc(npages, sizeof(struct niobuf_local), GFP_NOFS); rnb = kcalloc(npages, sizeof(struct niobuf_remote), GFP_NOFS); - if (lnb == NULL || rnb == NULL) { + if (!lnb || !rnb) { ret = -ENOMEM; goto out; } @@ -1513,7 +1510,7 @@ static int echo_client_prep_commit(const struct lu_env *env, struct page *page = lnb[i].page; /* read past eof? */ - if (page == NULL && lnb[i].rc == 0) + if (!page && lnb[i].rc == 0) continue; if (async) @@ -1582,7 +1579,7 @@ static int echo_client_brw_ioctl(const struct lu_env *env, int rw, if (test_mode == 1) async = 0; - if (ed->ed_next == NULL && test_mode != 3) { + if (!ed->ed_next && test_mode != 3) { test_mode = 3; data->ioc_plen1 = data->ioc_count; } @@ -1834,7 +1831,7 @@ static int echo_client_disconnect(struct obd_export *exp) { int rc; - if (exp == NULL) { + if (!exp) { rc = -EINVAL; goto out; } -- 2.39.5