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Diffstat (limited to 'fs/gfs2/ops_vm.c')
-rw-r--r--fs/gfs2/ops_vm.c169
1 files changed, 0 insertions, 169 deletions
diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c
deleted file mode 100644
index 927d739d4685..000000000000
--- a/fs/gfs2/ops_vm.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "bmap.h"
-#include "glock.h"
-#include "inode.h"
-#include "ops_vm.h"
-#include "quota.h"
-#include "rgrp.h"
-#include "trans.h"
-#include "util.h"
-
-static int gfs2_private_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
- struct gfs2_inode *ip = GFS2_I(vma->vm_file->f_mapping->host);
-
- set_bit(GIF_PAGED, &ip->i_flags);
- return filemap_fault(vma, vmf);
-}
-
-static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
-{
- struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- unsigned long index = page->index;
- u64 lblock = index << (PAGE_CACHE_SHIFT -
- sdp->sd_sb.sb_bsize_shift);
- unsigned int blocks = PAGE_CACHE_SIZE >> sdp->sd_sb.sb_bsize_shift;
- struct gfs2_alloc *al;
- unsigned int data_blocks, ind_blocks;
- unsigned int x;
- int error;
-
- al = gfs2_alloc_get(ip);
-
- error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
- if (error)
- goto out;
-
- error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
- if (error)
- goto out_gunlock_q;
-
- gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
-
- al->al_requested = data_blocks + ind_blocks;
-
- error = gfs2_inplace_reserve(ip);
- if (error)
- goto out_gunlock_q;
-
- error = gfs2_trans_begin(sdp, al->al_rgd->rd_length +
- ind_blocks + RES_DINODE +
- RES_STATFS + RES_QUOTA, 0);
- if (error)
- goto out_ipres;
-
- if (gfs2_is_stuffed(ip)) {
- error = gfs2_unstuff_dinode(ip, NULL);
- if (error)
- goto out_trans;
- }
-
- for (x = 0; x < blocks; ) {
- u64 dblock;
- unsigned int extlen;
- int new = 1;
-
- error = gfs2_extent_map(&ip->i_inode, lblock, &new, &dblock, &extlen);
- if (error)
- goto out_trans;
-
- lblock += extlen;
- x += extlen;
- }
-
- gfs2_assert_warn(sdp, al->al_alloced);
-
-out_trans:
- gfs2_trans_end(sdp);
-out_ipres:
- gfs2_inplace_release(ip);
-out_gunlock_q:
- gfs2_quota_unlock(ip);
-out:
- gfs2_alloc_put(ip);
- return error;
-}
-
-static int gfs2_sharewrite_fault(struct vm_area_struct *vma,
- struct vm_fault *vmf)
-{
- struct file *file = vma->vm_file;
- struct gfs2_file *gf = file->private_data;
- struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
- struct gfs2_holder i_gh;
- int alloc_required;
- int error;
- int ret = 0;
-
- error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
- if (error)
- goto out;
-
- set_bit(GIF_PAGED, &ip->i_flags);
- set_bit(GIF_SW_PAGED, &ip->i_flags);
-
- error = gfs2_write_alloc_required(ip,
- (u64)vmf->pgoff << PAGE_CACHE_SHIFT,
- PAGE_CACHE_SIZE, &alloc_required);
- if (error) {
- ret = VM_FAULT_OOM; /* XXX: are these right? */
- goto out_unlock;
- }
-
- set_bit(GFF_EXLOCK, &gf->f_flags);
- ret = filemap_fault(vma, vmf);
- clear_bit(GFF_EXLOCK, &gf->f_flags);
- if (ret & VM_FAULT_ERROR)
- goto out_unlock;
-
- if (alloc_required) {
- /* XXX: do we need to drop page lock around alloc_page_backing?*/
- error = alloc_page_backing(ip, vmf->page);
- if (error) {
- /*
- * VM_FAULT_LOCKED should always be the case for
- * filemap_fault, but it may not be in a future
- * implementation.
- */
- if (ret & VM_FAULT_LOCKED)
- unlock_page(vmf->page);
- page_cache_release(vmf->page);
- ret = VM_FAULT_OOM;
- goto out_unlock;
- }
- set_page_dirty(vmf->page);
- }
-
-out_unlock:
- gfs2_glock_dq_uninit(&i_gh);
-out:
- return ret;
-}
-
-struct vm_operations_struct gfs2_vm_ops_private = {
- .fault = gfs2_private_fault,
-};
-
-struct vm_operations_struct gfs2_vm_ops_sharewrite = {
- .fault = gfs2_sharewrite_fault,
-};
-