From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <1425411864.3359.78.camel@infradead.org> Subject: Re: [PATCH 1/1 linux-next] jffs2: remove multiple dereferences in debug From: David Woodhouse To: Fabian Frederick Date: Tue, 03 Mar 2015 19:44:24 +0000 In-Reply-To: <1425409389-21613-1-git-send-email-fabf@skynet.be> References: <1425409389-21613-1-git-send-email-fabf@skynet.be> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-5eqez5rE7QkrciOjC6Hn" Mime-Version: 1.0 Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-5eqez5rE7QkrciOjC6Hn Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2015-03-03 at 20:03 +0100, Fabian Frederick wrote: > use jffs2_eraseblock variables to simplify the code That looks more like it's obfuscating the code to me. Now you have to look up a few lines to see what the 'nextb' and 'gcb' variables actually point to. It doesn't even make it easier to read =E2=80=94 if there were long lines w= ith complex formul=C3=A6 it might make some sense, but in this case I think there's really no point in this change. > Signed-off-by: Fabian Frederick > --- > fs/jffs2/debug.c | 26 ++++++++++++++------------ > 1 file changed, 14 insertions(+), 12 deletions(-) >=20 > diff --git a/fs/jffs2/debug.c b/fs/jffs2/debug.c > index 1090eb6..2ddb967 100644 > --- a/fs/jffs2/debug.c > +++ b/fs/jffs2/debug.c > @@ -160,26 +160,28 @@ __jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb= _info *c, > void __jffs2_dbg_superblock_counts(struct jffs2_sb_info *c) > { > struct jffs2_eraseblock *jeb; > + struct jffs2_eraseblock *gcb =3D c->gcblock; > + struct jffs2_eraseblock *nextb =3D c->nextblock; > uint32_t free =3D 0, dirty =3D 0, used =3D 0, wasted =3D 0, > erasing =3D 0, bad =3D 0, unchecked =3D 0; > int nr_counted =3D 0; > int dump =3D 0; > =20 > - if (c->gcblock) { > + if (gcb) { > nr_counted++; > - free +=3D c->gcblock->free_size; > - dirty +=3D c->gcblock->dirty_size; > - used +=3D c->gcblock->used_size; > - wasted +=3D c->gcblock->wasted_size; > - unchecked +=3D c->gcblock->unchecked_size; > + free +=3D gcb->free_size; > + dirty +=3D gcb->dirty_size; > + used +=3D gcb->used_size; > + wasted +=3D gcb->wasted_size; > + unchecked +=3D gcb->unchecked_size; > } > - if (c->nextblock) { > + if (nextb) { > nr_counted++; > - free +=3D c->nextblock->free_size; > - dirty +=3D c->nextblock->dirty_size; > - used +=3D c->nextblock->used_size; > - wasted +=3D c->nextblock->wasted_size; > - unchecked +=3D c->nextblock->unchecked_size; > + free +=3D nextb->free_size; > + dirty +=3D nextb->dirty_size; > + used +=3D nextb->used_size; > + wasted +=3D nextb->wasted_size; > + unchecked +=3D nextb->unchecked_size; > } > list_for_each_entry(jeb, &c->clean_list, list) { > nr_counted++; --=20 dwmw2 --=-5eqez5rE7QkrciOjC6Hn Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: 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