/* mpihelp-sub.c - MPI helper functions * Copyright (C) 1994, 1996 Free Software Foundation, Inc. * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * GnuPG is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * * Note: This code is heavily based on the GNU MP Library. * Actually it's the same code with only minor changes in the * way the data is stored; this is to support the abstraction * of an optional secure memory allocation which may be used * to avoid revealing of sensitive data due to paging etc. * The GNU MP Library itself is published under the LGPL; * however I decided to publish this code under the plain GPL. */ #include "mpi-internal.h" /**************** * Compare OP1_PTR/OP1_SIZE with OP2_PTR/OP2_SIZE. * There are no restrictions on the relative sizes of * the two arguments. * Return 1 if OP1 > OP2, 0 if they are equal, and -1 if OP1 < OP2. */ int mpihelp_cmp(mpi_ptr_t op1_ptr, mpi_ptr_t op2_ptr, mpi_size_t size) { mpi_size_t i; mpi_limb_t op1_word, op2_word; for (i = size - 1; i >= 0; i--) { op1_word = op1_ptr[i]; op2_word = op2_ptr[i]; if (op1_word != op2_word) goto diff; } return 0; diff: /* This can *not* be simplified to * op2_word - op2_word * since that expression might give signed overflow. */ return (op1_word > op2_word) ? 1 : -1; } 49d14900'>commitdiff
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authorJan Kara <jack@suse.cz>2016-10-21 11:33:49 +0200
committerDan Williams <dan.j.williams@intel.com>2016-12-26 20:29:25 -0800
commit1db175428ee374489448361213e9c3b749d14900 (patch)
tree32e4eebdad84d1c6e84508186b0f1fb63df7bdfc /sound/isa/msnd/msnd_classic.c
parent9f141d6ef6258a3a37a045842d9ba7e68f368956 (diff)
ext4: Simplify DAX fault path
Now that dax_iomap_fault() calls ->iomap_begin() without entry lock, we can use transaction starting in ext4_iomap_begin() and thus simplify ext4_dax_fault(). It also provides us proper retries in case of ENOSPC. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'sound/isa/msnd/msnd_classic.c')