/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2007 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
#include "trans.h"
#include "rgrp.h"
#include "ops_file.h"
+#include "super.h"
#include "util.h"
#include "glops.h"
void *kaddr;
int error;
- BUG_ON(page->index);
+ /*
+ * Due to the order of unstuffing files and ->nopage(), we can be
+ * asked for a zero page in the case of a stuffed file being extended,
+ * so we need to supply one here. It doesn't happen often.
+ */
+ if (unlikely(page->index)) {
+ kaddr = kmap_atomic(page, KM_USER0);
+ memset(kaddr, 0, PAGE_CACHE_SIZE);
+ kunmap_atomic(kaddr, KM_USER0);
+ flush_dcache_page(page);
+ SetPageUptodate(page);
+ return 0;
+ }
error = gfs2_meta_inode_buffer(ip, &dibh);
if (error)
ip->i_di.di_size);
memset(kaddr + ip->i_di.di_size, 0, PAGE_CACHE_SIZE - ip->i_di.di_size);
kunmap_atomic(kaddr, KM_USER0);
-
+ flush_dcache_page(page);
brelse(dibh);
-
SetPageUptodate(page);
return 0;
return error;
}
+/**
+ * adjust_fs_space - Adjusts the free space available due to gfs2_grow
+ * @inode: the rindex inode
+ */
+static void adjust_fs_space(struct inode *inode)
+{
+ struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
+ struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master;
+ struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
+ u64 fs_total, new_free;
+
+ /* Total up the file system space, according to the latest rindex. */
+ fs_total = gfs2_ri_total(sdp);
+
+ spin_lock(&sdp->sd_statfs_spin);
+ if (fs_total > (m_sc->sc_total + l_sc->sc_total))
+ new_free = fs_total - (m_sc->sc_total + l_sc->sc_total);
+ else
+ new_free = 0;
+ spin_unlock(&sdp->sd_statfs_spin);
+ fs_warn(sdp, "File system extended by %llu blocks.\n",
+ (unsigned long long)new_free);
+ gfs2_statfs_change(sdp, new_free, new_free, 0);
+}
+
/**
* gfs2_commit_write - Commit write to a file
* @file: The file to write to
di->di_size = cpu_to_be64(inode->i_size);
}
+ if (inode == sdp->sd_rindex)
+ adjust_fs_space(inode);
+
brelse(dibh);
gfs2_trans_end(sdp);
if (al->al_requested) {
gfs2_quota_unlock(ip);
gfs2_alloc_put(ip);
}
+ unlock_page(page);
gfs2_glock_dq_m(1, &ip->i_gh);
+ lock_page(page);
gfs2_holder_uninit(&ip->i_gh);
return 0;
gfs2_quota_unlock(ip);
gfs2_alloc_put(ip);
}
+ unlock_page(page);
gfs2_glock_dq_m(1, &ip->i_gh);
+ lock_page(page);
gfs2_holder_uninit(&ip->i_gh);
fail_nounlock:
ClearPageUptodate(page);