])
#
-# LC_STRUCT_KIOBUF
-#
-# rh 2.4.18 has iobuf->dovary, but other kernels do not
-#
-AC_DEFUN([LC_STRUCT_KIOBUF],
-[AC_MSG_CHECKING([if struct kiobuf has a dovary field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/iobuf.h>
-],[
- struct kiobuf iobuf;
- iobuf.dovary = 1;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_KIOBUF_DOVARY, 1, [struct kiobuf has a dovary field])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_COND_RESCHED
-#
-# cond_resched() was introduced in 2.4.20
-#
-AC_DEFUN([LC_FUNC_COND_RESCHED],
-[AC_MSG_CHECKING([if kernel offers cond_resched])
-LB_LINUX_TRY_COMPILE([
- #include <linux/sched.h>
-],[
- cond_resched();
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(HAVE_COND_RESCHED, 1, [cond_resched found])
-],[
- AC_MSG_RESULT([no])
-])
-])
#
# LC_FUNC_RELEASEPAGE_WITH_GFP
fi
])
-
-#
-# LC_FUNC_ZAP_PAGE_RANGE
-#
-# if zap_page_range() takes a vma arg
-#
-AC_DEFUN([LC_FUNC_ZAP_PAGE_RANGE],
-[AC_MSG_CHECKING([if zap_page_range with vma parameter])
-ZAP_PAGE_RANGE_VMA="`grep -c 'zap_page_range.*struct vm_area_struct' $LINUX/include/linux/mm.h`"
-if test "$ZAP_PAGE_RANGE_VMA" != 0 ; then
- AC_DEFINE(ZAP_PAGE_RANGE_VMA, 1, [zap_page_range with vma parameter])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-])
-
-#
-# LC_FUNC_PDE
-#
-# if proc_fs.h defines PDE()
-#
-AC_DEFUN([LC_FUNC_PDE],
-[AC_MSG_CHECKING([if kernel defines PDE])
-HAVE_PDE="`grep -c 'proc_dir_entry..PDE' $LINUX/include/linux/proc_fs.h`"
-if test "$HAVE_PDE" != 0 ; then
- AC_DEFINE(HAVE_PDE, 1, [the kernel defines PDE])
- AC_MSG_RESULT([yes])
-else
- AC_MSG_RESULT([no])
-fi
-])
-
-#
# LC_FUNC_FILEMAP_FDATASYNC
#
# if filemap_fdatasync() exists
])
#
-# LC_FUNC_DIRECT_IO
-#
-# if direct_IO takes a struct file argument
-#
-AC_DEFUN([LC_FUNC_DIRECT_IO],
-[AC_MSG_CHECKING([if kernel passes struct file to direct_IO])
-HAVE_DIO_FILE="`grep -c 'direct_IO.*struct file' $LINUX/include/linux/fs.h`"
-if test "$HAVE_DIO_FILE" != 0 ; then
- AC_DEFINE(HAVE_DIO_FILE, 1, [the kernel passes struct file to direct_IO])
- AC_MSG_RESULT(yes)
-else
- AC_MSG_RESULT(no)
-fi
-])
-
-#
# LC_HEADER_MM_INLINE
#
# RHEL kernels define page_count in mm_inline.h
if test x$with_ldiskfs = xno ; then
BACKINGFS="ext3"
- if test x$linux25$enable_server = xyesyes ; then
+ if test x$enable_server = xyes ; then
AC_MSG_ERROR([ldiskfs is required for 2.6-based servers.])
fi
LC_EXPORT___D_MOVE
LC_EXPORT_NODE_TO_CPUMASK
- LC_STRUCT_KIOBUF
- LC_FUNC_COND_RESCHED
LC_FUNC_RELEASEPAGE_WITH_GFP
- LC_FUNC_ZAP_PAGE_RANGE
- LC_FUNC_PDE
- LC_FUNC_DIRECT_IO
LC_HEADER_MM_INLINE
LC_STRUCT_INODE
LC_FUNC_REGISTER_CACHE
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program 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 version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
- * Use is subject to license terms.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/llite/rw24.c
- *
- * Lustre Lite I/O page cache for the 2.4 kernel version
- */
-
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/smp_lock.h>
-#include <linux/unistd.h>
-#include <linux/version.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <linux/fs.h>
-#include <linux/iobuf.h>
-#include <linux/stat.h>
-#include <asm/uaccess.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
-
-#define DEBUG_SUBSYSTEM S_LLITE
-
-#include <lustre_lite.h>
-#include "llite_internal.h"
-#include <linux/lustre_compat25.h>
-
-static int ll_direct_IO_24(int rw,
-#ifdef HAVE_DIO_FILE
- struct file *file,
-#else
- struct inode *inode,
-#endif
- struct kiobuf *iobuf, unsigned long blocknr,
- int blocksize)
-{
-#ifdef HAVE_DIO_FILE
- struct inode *inode = file->f_dentry->d_inode;
-#endif
- struct ll_inode_info *lli = ll_i2info(inode);
- struct lov_stripe_md *lsm = lli->lli_smd;
- struct brw_page *pga;
- struct obdo oa;
- int length, i, flags, rc = 0;
- loff_t offset, offset_orig;
- ENTRY;
-
- if (!lsm || !lsm->lsm_object_id)
- RETURN(-EBADF);
-
- offset = ((obd_off)blocknr << inode->i_blkbits);
- offset_orig = offset;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), size="LPSZ
- ", offset=%lld=%llx, pages %u\n",
- inode->i_ino, inode->i_generation, inode, iobuf->length,
- offset, offset, iobuf->nr_pages);
-
- /* FIXME: io smaller than CFS_PAGE_SIZE is broken on ia64 */
- if ((iobuf->offset & (~CFS_PAGE_MASK)) ||
- (iobuf->length & (~CFS_PAGE_MASK)))
- RETURN(-EINVAL);
-
- OBD_ALLOC(pga, sizeof(*pga) * iobuf->nr_pages);
- if (!pga)
- RETURN(-ENOMEM);
-
- flags = 0 /* | OBD_BRW_DIRECTIO */;
- length = iobuf->length;
- rw = rw ? OBD_BRW_WRITE : OBD_BRW_READ;
-
- for (i = 0, length = iobuf->length; length > 0;
- length -= pga[i].count, offset += pga[i].count, i++) { /*i last!*/
- pga[i].pg = iobuf->maplist[i];
- pga[i].off = offset;
- /* To the end of the page, or the length, whatever is less */
- pga[i].count = min_t(int, CFS_PAGE_SIZE - (offset & ~CFS_PAGE_MASK),
- length);
- pga[i].flag = flags;
- if (rw == OBD_BRW_READ)
- POISON_PAGE(iobuf->maplist[i], 0x0d);
- }
-
- ll_inode_fill_obdo(inode, rw, &oa);
-
- if (rw == OBD_BRW_WRITE)
- ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_DIRECT_WRITE, iobuf->length);
- else
- ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_DIRECT_READ, iobuf->length);
- rc = obd_brw_rqset(rw, ll_i2obdexp(inode), &oa, lsm, iobuf->nr_pages,
- pga, NULL);
- if ((rc > 0) && (rw == OBD_BRW_WRITE)) {
- lov_stripe_lock(lsm);
- obd_adjust_kms(ll_i2obdexp(inode), lsm, offset_orig + rc, 0);
- lov_stripe_unlock(lsm);
- }
-
- OBD_FREE(pga, sizeof(*pga) * iobuf->nr_pages);
- RETURN(rc);
-}
-
-#ifdef KERNEL_HAS_AS_MAX_READAHEAD
-static int ll_max_readahead(struct inode *inode)
-{
- return 0;
-}
-#endif
-
-struct address_space_operations ll_aops = {
- .readpage = ll_readpage,
- .direct_IO = ll_direct_IO_24,
- .writepage = ll_writepage,
- .prepare_write = ll_prepare_write,
- .commit_write = ll_commit_write,
- .removepage = ll_removepage,
- .sync_page = NULL,
- .bmap = NULL,
-#ifdef KERNEL_HAS_AS_MAX_READAHEAD
- .max_readahead = ll_max_readahead,
-#endif
-};
git://git.whamcloud.com / fs / lustre-release.git / commitdiff