![Tim Schmielau](/assets/img/avatar_default.png)
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
162 lines
3.7 KiB
C
162 lines
3.7 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/mm.h>
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#include <linux/pagemap.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "bmap.h"
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#include "glock.h"
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#include "inode.h"
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#include "ops_vm.h"
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#include "quota.h"
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#include "rgrp.h"
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#include "trans.h"
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#include "util.h"
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static struct page *gfs2_private_nopage(struct vm_area_struct *area,
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unsigned long address, int *type)
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{
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struct gfs2_inode *ip = GFS2_I(area->vm_file->f_mapping->host);
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set_bit(GIF_PAGED, &ip->i_flags);
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return filemap_nopage(area, address, type);
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}
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static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
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{
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
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unsigned long index = page->index;
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u64 lblock = index << (PAGE_CACHE_SHIFT -
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sdp->sd_sb.sb_bsize_shift);
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unsigned int blocks = PAGE_CACHE_SIZE >> sdp->sd_sb.sb_bsize_shift;
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struct gfs2_alloc *al;
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unsigned int data_blocks, ind_blocks;
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unsigned int x;
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int error;
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al = gfs2_alloc_get(ip);
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error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
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if (error)
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goto out;
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error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
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if (error)
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goto out_gunlock_q;
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gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
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al->al_requested = data_blocks + ind_blocks;
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error = gfs2_inplace_reserve(ip);
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if (error)
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goto out_gunlock_q;
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error = gfs2_trans_begin(sdp, al->al_rgd->rd_ri.ri_length +
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ind_blocks + RES_DINODE +
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RES_STATFS + RES_QUOTA, 0);
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if (error)
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goto out_ipres;
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if (gfs2_is_stuffed(ip)) {
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error = gfs2_unstuff_dinode(ip, NULL);
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if (error)
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goto out_trans;
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}
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for (x = 0; x < blocks; ) {
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u64 dblock;
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unsigned int extlen;
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int new = 1;
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error = gfs2_extent_map(&ip->i_inode, lblock, &new, &dblock, &extlen);
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if (error)
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goto out_trans;
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lblock += extlen;
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x += extlen;
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}
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gfs2_assert_warn(sdp, al->al_alloced);
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out_trans:
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gfs2_trans_end(sdp);
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out_ipres:
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gfs2_inplace_release(ip);
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out_gunlock_q:
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gfs2_quota_unlock(ip);
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out:
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gfs2_alloc_put(ip);
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return error;
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}
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static struct page *gfs2_sharewrite_nopage(struct vm_area_struct *area,
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unsigned long address, int *type)
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{
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struct file *file = area->vm_file;
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struct gfs2_file *gf = file->private_data;
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struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
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struct gfs2_holder i_gh;
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struct page *result = NULL;
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unsigned long index = ((address - area->vm_start) >> PAGE_CACHE_SHIFT) +
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area->vm_pgoff;
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int alloc_required;
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int error;
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error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
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if (error)
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return NULL;
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set_bit(GIF_PAGED, &ip->i_flags);
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set_bit(GIF_SW_PAGED, &ip->i_flags);
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error = gfs2_write_alloc_required(ip, (u64)index << PAGE_CACHE_SHIFT,
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PAGE_CACHE_SIZE, &alloc_required);
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if (error)
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goto out;
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set_bit(GFF_EXLOCK, &gf->f_flags);
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result = filemap_nopage(area, address, type);
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clear_bit(GFF_EXLOCK, &gf->f_flags);
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if (!result || result == NOPAGE_OOM)
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goto out;
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if (alloc_required) {
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error = alloc_page_backing(ip, result);
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if (error) {
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page_cache_release(result);
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result = NULL;
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goto out;
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}
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set_page_dirty(result);
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}
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out:
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gfs2_glock_dq_uninit(&i_gh);
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return result;
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}
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struct vm_operations_struct gfs2_vm_ops_private = {
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.nopage = gfs2_private_nopage,
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};
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struct vm_operations_struct gfs2_vm_ops_sharewrite = {
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.nopage = gfs2_sharewrite_nopage,
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};
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