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37b2c8377c
This patch is a clean up of gfs2_quotad prior to giving it an extra job to do in addition to the current portfolio of updating the quota and statfs information from time to time. As a result it has been moved into quota.c allowing one of the functions it calls to be made static. Also the clean up allows the two existing functions to have separate timeouts and also to coexist with its future role of dealing with the "truncate in progress" inode flag. The (pointless) setting of gfs2_quotad_secs is removed since we arrange to only wake up quotad when one of the two timers expires. In addition the struct gfs2_quota_data is moved into a slab cache, mainly for easier debugging. It should also be possible to use a shrinker in the future, rather than the current scheme of scanning the quota data entries from time to time. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
168 lines
3.6 KiB
C
168 lines
3.6 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/module.h>
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#include <linux/init.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include <asm/atomic.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "super.h"
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#include "sys.h"
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#include "util.h"
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#include "glock.h"
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static void gfs2_init_inode_once(void *foo)
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{
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struct gfs2_inode *ip = foo;
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inode_init_once(&ip->i_inode);
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init_rwsem(&ip->i_rw_mutex);
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ip->i_alloc = NULL;
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}
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static void gfs2_init_glock_once(void *foo)
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{
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struct gfs2_glock *gl = foo;
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INIT_HLIST_NODE(&gl->gl_list);
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spin_lock_init(&gl->gl_spin);
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INIT_LIST_HEAD(&gl->gl_holders);
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gl->gl_lvb = NULL;
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atomic_set(&gl->gl_lvb_count, 0);
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INIT_LIST_HEAD(&gl->gl_reclaim);
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INIT_LIST_HEAD(&gl->gl_ail_list);
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atomic_set(&gl->gl_ail_count, 0);
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}
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/**
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* init_gfs2_fs - Register GFS2 as a filesystem
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*
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* Returns: 0 on success, error code on failure
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*/
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static int __init init_gfs2_fs(void)
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{
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int error;
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error = gfs2_sys_init();
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if (error)
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return error;
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error = gfs2_glock_init();
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if (error)
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goto fail;
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error = -ENOMEM;
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gfs2_glock_cachep = kmem_cache_create("gfs2_glock",
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sizeof(struct gfs2_glock),
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0, 0,
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gfs2_init_glock_once);
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if (!gfs2_glock_cachep)
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goto fail;
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gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
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sizeof(struct gfs2_inode),
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0, SLAB_RECLAIM_ACCOUNT|
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SLAB_MEM_SPREAD,
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gfs2_init_inode_once);
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if (!gfs2_inode_cachep)
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goto fail;
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gfs2_bufdata_cachep = kmem_cache_create("gfs2_bufdata",
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sizeof(struct gfs2_bufdata),
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0, 0, NULL);
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if (!gfs2_bufdata_cachep)
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goto fail;
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gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
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sizeof(struct gfs2_rgrpd),
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0, 0, NULL);
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if (!gfs2_rgrpd_cachep)
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goto fail;
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gfs2_quotad_cachep = kmem_cache_create("gfs2_quotad",
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sizeof(struct gfs2_quota_data),
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0, 0, NULL);
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if (!gfs2_quotad_cachep)
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goto fail;
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error = register_filesystem(&gfs2_fs_type);
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if (error)
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goto fail;
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error = register_filesystem(&gfs2meta_fs_type);
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if (error)
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goto fail_unregister;
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gfs2_register_debugfs();
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printk("GFS2 (built %s %s) installed\n", __DATE__, __TIME__);
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return 0;
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fail_unregister:
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unregister_filesystem(&gfs2_fs_type);
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fail:
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gfs2_glock_exit();
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if (gfs2_quotad_cachep)
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kmem_cache_destroy(gfs2_quotad_cachep);
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if (gfs2_rgrpd_cachep)
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kmem_cache_destroy(gfs2_rgrpd_cachep);
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if (gfs2_bufdata_cachep)
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kmem_cache_destroy(gfs2_bufdata_cachep);
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if (gfs2_inode_cachep)
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kmem_cache_destroy(gfs2_inode_cachep);
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if (gfs2_glock_cachep)
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kmem_cache_destroy(gfs2_glock_cachep);
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gfs2_sys_uninit();
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return error;
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}
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/**
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* exit_gfs2_fs - Unregister the file system
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*
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*/
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static void __exit exit_gfs2_fs(void)
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{
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gfs2_glock_exit();
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gfs2_unregister_debugfs();
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unregister_filesystem(&gfs2_fs_type);
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unregister_filesystem(&gfs2meta_fs_type);
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kmem_cache_destroy(gfs2_quotad_cachep);
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kmem_cache_destroy(gfs2_rgrpd_cachep);
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kmem_cache_destroy(gfs2_bufdata_cachep);
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kmem_cache_destroy(gfs2_inode_cachep);
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kmem_cache_destroy(gfs2_glock_cachep);
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gfs2_sys_uninit();
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}
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MODULE_DESCRIPTION("Global File System");
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MODULE_AUTHOR("Red Hat, Inc.");
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MODULE_LICENSE("GPL");
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module_init(init_gfs2_fs);
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module_exit(exit_gfs2_fs);
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