/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 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
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
/*
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
-#include <linux/tty.h>
#include <linux/sort.h>
-#include <asm/semaphore.h>
+#include <linux/fs.h>
+#include <linux/bio.h>
+#include <linux/gfs2_ondisk.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include "gfs2.h"
+#include "incore.h"
#include "bmap.h"
#include "glock.h"
#include "glops.h"
-#include "jdata.h"
#include "log.h"
#include "meta_io.h"
#include "quota.h"
#include "rgrp.h"
#include "super.h"
#include "trans.h"
+#include "inode.h"
+#include "ops_address.h"
+#include "util.h"
#define QUOTA_USER 1
#define QUOTA_GROUP 0
-static uint64_t qd2offset(struct gfs2_quota_data *qd)
+struct gfs2_quota_host {
+ u64 qu_limit;
+ u64 qu_warn;
+ s64 qu_value;
+ u32 qu_ll_next;
+};
+
+struct gfs2_quota_change_host {
+ u64 qc_change;
+ u32 qc_flags; /* GFS2_QCF_... */
+ u32 qc_id;
+};
+
+static LIST_HEAD(qd_lru_list);
+static atomic_t qd_lru_count = ATOMIC_INIT(0);
+static DEFINE_SPINLOCK(qd_lru_lock);
+
+int gfs2_shrink_qd_memory(int nr, gfp_t gfp_mask)
{
- uint64_t offset;
+ struct gfs2_quota_data *qd;
+ struct gfs2_sbd *sdp;
+
+ if (nr == 0)
+ goto out;
- offset = 2 * (uint64_t)qd->qd_id + !test_bit(QDF_USER, &qd->qd_flags);
+ if (!(gfp_mask & __GFP_FS))
+ return -1;
+
+ spin_lock(&qd_lru_lock);
+ while (nr && !list_empty(&qd_lru_list)) {
+ qd = list_entry(qd_lru_list.next,
+ struct gfs2_quota_data, qd_reclaim);
+ sdp = qd->qd_gl->gl_sbd;
+
+ /* Free from the filesystem-specific list */
+ list_del(&qd->qd_list);
+
+ gfs2_assert_warn(sdp, !qd->qd_change);
+ gfs2_assert_warn(sdp, !qd->qd_slot_count);
+ gfs2_assert_warn(sdp, !qd->qd_bh_count);
+
+ gfs2_glock_put(qd->qd_gl);
+ atomic_dec(&sdp->sd_quota_count);
+
+ /* Delete it from the common reclaim list */
+ list_del_init(&qd->qd_reclaim);
+ atomic_dec(&qd_lru_count);
+ spin_unlock(&qd_lru_lock);
+ kmem_cache_free(gfs2_quotad_cachep, qd);
+ spin_lock(&qd_lru_lock);
+ nr--;
+ }
+ spin_unlock(&qd_lru_lock);
+
+out:
+ return (atomic_read(&qd_lru_count) * sysctl_vfs_cache_pressure) / 100;
+}
+
+static u64 qd2offset(struct gfs2_quota_data *qd)
+{
+ u64 offset;
+
+ offset = 2 * (u64)qd->qd_id + !test_bit(QDF_USER, &qd->qd_flags);
offset *= sizeof(struct gfs2_quota);
return offset;
}
-static int qd_alloc(struct gfs2_sbd *sdp, int user, uint32_t id,
+static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
struct gfs2_quota_data **qdp)
{
struct gfs2_quota_data *qd;
int error;
- qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_KERNEL);
+ qd = kmem_cache_zalloc(gfs2_quotad_cachep, GFP_NOFS);
if (!qd)
return -ENOMEM;
- qd->qd_count = 1;
+ atomic_set(&qd->qd_count, 1);
qd->qd_id = id;
if (user)
set_bit(QDF_USER, &qd->qd_flags);
qd->qd_slot = -1;
+ INIT_LIST_HEAD(&qd->qd_reclaim);
- error = gfs2_glock_get(sdp, 2 * (uint64_t)id + !user,
+ error = gfs2_glock_get(sdp, 2 * (u64)id + !user,
&gfs2_quota_glops, CREATE, &qd->qd_gl);
if (error)
goto fail;
- error = gfs2_lvb_hold(qd->qd_gl);
- gfs2_glock_put(qd->qd_gl);
- if (error)
- goto fail;
-
*qdp = qd;
return 0;
- fail:
- kfree(qd);
+fail:
+ kmem_cache_free(gfs2_quotad_cachep, qd);
return error;
}
-static int qd_get(struct gfs2_sbd *sdp, int user, uint32_t id, int create,
+static int qd_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
struct gfs2_quota_data **qdp)
{
struct gfs2_quota_data *qd = NULL, *new_qd = NULL;
for (;;) {
found = 0;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) {
if (qd->qd_id == id &&
!test_bit(QDF_USER, &qd->qd_flags) == !user) {
- qd->qd_count++;
+ if (!atomic_read(&qd->qd_count) &&
+ !list_empty(&qd->qd_reclaim)) {
+ /* Remove it from reclaim list */
+ list_del_init(&qd->qd_reclaim);
+ atomic_dec(&qd_lru_count);
+ }
+ atomic_inc(&qd->qd_count);
found = 1;
break;
}
new_qd = NULL;
}
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
if (qd || !create) {
if (new_qd) {
- gfs2_lvb_unhold(new_qd->qd_gl);
- kfree(new_qd);
+ gfs2_glock_put(new_qd->qd_gl);
+ kmem_cache_free(gfs2_quotad_cachep, new_qd);
}
*qdp = qd;
return 0;
static void qd_hold(struct gfs2_quota_data *qd)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
-
- spin_lock(&sdp->sd_quota_spin);
- gfs2_assert(sdp, qd->qd_count);
- qd->qd_count++;
- spin_unlock(&sdp->sd_quota_spin);
+ gfs2_assert(sdp, atomic_read(&qd->qd_count));
+ atomic_inc(&qd->qd_count);
}
static void qd_put(struct gfs2_quota_data *qd)
{
- struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- spin_lock(&sdp->sd_quota_spin);
- gfs2_assert(sdp, qd->qd_count);
- if (!--qd->qd_count)
- qd->qd_last_touched = jiffies;
- spin_unlock(&sdp->sd_quota_spin);
+ if (atomic_dec_and_lock(&qd->qd_count, &qd_lru_lock)) {
+ /* Add to the reclaim list */
+ list_add_tail(&qd->qd_reclaim, &qd_lru_list);
+ atomic_inc(&qd_lru_count);
+ spin_unlock(&qd_lru_lock);
+ }
}
static int slot_get(struct gfs2_quota_data *qd)
unsigned int c, o = 0, b;
unsigned char byte = 0;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
if (qd->qd_slot_count++) {
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
return 0;
}
goto fail;
- found:
+found:
for (b = 0; b < 8; b++)
if (!(byte & (1 << b)))
break;
sdp->sd_quota_bitmap[c][o] |= 1 << b;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
return 0;
- fail:
+fail:
qd->qd_slot_count--;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
return -ENOSPC;
}
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
gfs2_assert(sdp, qd->qd_slot_count);
qd->qd_slot_count++;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
}
static void slot_put(struct gfs2_quota_data *qd)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
gfs2_assert(sdp, qd->qd_slot_count);
if (!--qd->qd_slot_count) {
gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, qd->qd_slot, 0);
qd->qd_slot = -1;
}
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
}
static int bh_get(struct gfs2_quota_data *qd)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- struct gfs2_inode *ip = sdp->sd_qc_inode;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode);
unsigned int block, offset;
- uint64_t dblock;
- int new = 0;
struct buffer_head *bh;
int error;
+ struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
- down(&sdp->sd_quota_mutex);
+ mutex_lock(&sdp->sd_quota_mutex);
if (qd->qd_bh_count++) {
- up(&sdp->sd_quota_mutex);
+ mutex_unlock(&sdp->sd_quota_mutex);
return 0;
}
block = qd->qd_slot / sdp->sd_qc_per_block;
- offset = qd->qd_slot % sdp->sd_qc_per_block;;
+ offset = qd->qd_slot % sdp->sd_qc_per_block;
- error = gfs2_block_map(ip, block, &new, &dblock, NULL);
+ bh_map.b_size = 1 << ip->i_inode.i_blkbits;
+ error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0);
if (error)
goto fail;
- error = gfs2_meta_read(ip->i_gl, dblock, DIO_START | DIO_WAIT, &bh);
+ error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, &bh);
if (error)
goto fail;
error = -EIO;
(bh->b_data + sizeof(struct gfs2_meta_header) +
offset * sizeof(struct gfs2_quota_change));
- up(&sdp->sd_quota_mutex);
+ mutex_unlock(&sdp->sd_quota_mutex);
return 0;
- fail_brelse:
+fail_brelse:
brelse(bh);
-
- fail:
+fail:
qd->qd_bh_count--;
- up(&sdp->sd_quota_mutex);
+ mutex_unlock(&sdp->sd_quota_mutex);
return error;
}
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- down(&sdp->sd_quota_mutex);
+ mutex_lock(&sdp->sd_quota_mutex);
gfs2_assert(sdp, qd->qd_bh_count);
if (!--qd->qd_bh_count) {
brelse(qd->qd_bh);
qd->qd_bh = NULL;
qd->qd_bh_qc = NULL;
}
- up(&sdp->sd_quota_mutex);
+ mutex_unlock(&sdp->sd_quota_mutex);
}
static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp)
if (sdp->sd_vfs->s_flags & MS_RDONLY)
return 0;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) {
if (test_bit(QDF_LOCKED, &qd->qd_flags) ||
list_move_tail(&qd->qd_list, &sdp->sd_quota_list);
set_bit(QDF_LOCKED, &qd->qd_flags);
- gfs2_assert_warn(sdp, qd->qd_count);
- qd->qd_count++;
+ gfs2_assert_warn(sdp, atomic_read(&qd->qd_count));
+ atomic_inc(&qd->qd_count);
qd->qd_change_sync = qd->qd_change;
gfs2_assert_warn(sdp, qd->qd_slot_count);
qd->qd_slot_count++;
if (!found)
qd = NULL;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
if (qd) {
gfs2_assert_warn(sdp, qd->qd_change_sync);
if (sdp->sd_vfs->s_flags & MS_RDONLY)
return 0;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
if (test_bit(QDF_LOCKED, &qd->qd_flags) ||
!test_bit(QDF_CHANGE, &qd->qd_flags)) {
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
return 0;
}
list_move_tail(&qd->qd_list, &sdp->sd_quota_list);
set_bit(QDF_LOCKED, &qd->qd_flags);
- gfs2_assert_warn(sdp, qd->qd_count);
- qd->qd_count++;
+ gfs2_assert_warn(sdp, atomic_read(&qd->qd_count));
+ atomic_inc(&qd->qd_count);
qd->qd_change_sync = qd->qd_change;
gfs2_assert_warn(sdp, qd->qd_slot_count);
qd->qd_slot_count++;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
gfs2_assert_warn(sdp, qd->qd_change_sync);
if (bh_get(qd)) {
static void qd_unlock(struct gfs2_quota_data *qd)
{
- gfs2_assert_warn(qd->qd_gl->gl_sbd, test_bit(QDF_LOCKED, &qd->qd_flags));
+ gfs2_assert_warn(qd->qd_gl->gl_sbd,
+ test_bit(QDF_LOCKED, &qd->qd_flags));
clear_bit(QDF_LOCKED, &qd->qd_flags);
bh_put(qd);
slot_put(qd);
qd_put(qd);
}
-static int qdsb_get(struct gfs2_sbd *sdp, int user, uint32_t id, int create,
+static int qdsb_get(struct gfs2_sbd *sdp, int user, u32 id, int create,
struct gfs2_quota_data **qdp)
{
int error;
return 0;
- fail_slot:
+fail_slot:
slot_put(*qdp);
-
- fail:
+fail:
qd_put(*qdp);
return error;
}
qd_put(qd);
}
-int gfs2_quota_hold(struct gfs2_inode *ip, uint32_t uid, uint32_t gid)
+int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
{
- struct gfs2_sbd *sdp = ip->i_sbd;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data **qd = al->al_qd;
int error;
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return 0;
- error = qdsb_get(sdp, QUOTA_USER, ip->i_di.di_uid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, CREATE, qd);
if (error)
goto out;
al->al_qd_num++;
qd++;
- error = qdsb_get(sdp, QUOTA_GROUP, ip->i_di.di_gid, CREATE, qd);
+ error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, CREATE, qd);
if (error)
goto out;
al->al_qd_num++;
qd++;
- if (uid != NO_QUOTA_CHANGE && uid != ip->i_di.di_uid) {
+ if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
error = qdsb_get(sdp, QUOTA_USER, uid, CREATE, qd);
if (error)
goto out;
qd++;
}
- if (gid != NO_QUOTA_CHANGE && gid != ip->i_di.di_gid) {
+ if (gid != NO_QUOTA_CHANGE && gid != ip->i_inode.i_gid) {
error = qdsb_get(sdp, QUOTA_GROUP, gid, CREATE, qd);
if (error)
goto out;
qd++;
}
- out:
+out:
if (error)
gfs2_quota_unhold(ip);
-
return error;
}
void gfs2_quota_unhold(struct gfs2_inode *ip)
{
- struct gfs2_sbd *sdp = ip->i_sbd;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));
static int sort_qd(const void *a, const void *b)
{
- struct gfs2_quota_data *qd_a = *(struct gfs2_quota_data **)a;
- struct gfs2_quota_data *qd_b = *(struct gfs2_quota_data **)b;
- int ret = 0;
+ const struct gfs2_quota_data *qd_a = *(const struct gfs2_quota_data **)a;
+ const struct gfs2_quota_data *qd_b = *(const struct gfs2_quota_data **)b;
if (!test_bit(QDF_USER, &qd_a->qd_flags) !=
!test_bit(QDF_USER, &qd_b->qd_flags)) {
if (test_bit(QDF_USER, &qd_a->qd_flags))
- ret = -1;
+ return -1;
else
- ret = 1;
- } else {
- if (qd_a->qd_id < qd_b->qd_id)
- ret = -1;
- else if (qd_a->qd_id > qd_b->qd_id)
- ret = 1;
+ return 1;
}
+ if (qd_a->qd_id < qd_b->qd_id)
+ return -1;
+ if (qd_a->qd_id > qd_b->qd_id)
+ return 1;
- return ret;
+ return 0;
}
-static void do_qc(struct gfs2_quota_data *qd, int64_t change)
+static void do_qc(struct gfs2_quota_data *qd, s64 change)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- struct gfs2_inode *ip = sdp->sd_qc_inode;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode);
struct gfs2_quota_change *qc = qd->qd_bh_qc;
- int64_t x;
+ s64 x;
- down(&sdp->sd_quota_mutex);
+ mutex_lock(&sdp->sd_quota_mutex);
gfs2_trans_add_bh(ip->i_gl, qd->qd_bh, 1);
if (!test_bit(QDF_CHANGE, &qd->qd_flags)) {
qc->qc_id = cpu_to_be32(qd->qd_id);
}
- x = qc->qc_change;
- x = be64_to_cpu(x) + change;
+ x = be64_to_cpu(qc->qc_change) + change;
qc->qc_change = cpu_to_be64(x);
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
qd->qd_change = x;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
if (!x) {
gfs2_assert_warn(sdp, test_bit(QDF_CHANGE, &qd->qd_flags));
qd_hold(qd);
slot_hold(qd);
}
-
- up(&sdp->sd_quota_mutex);
+
+ mutex_unlock(&sdp->sd_quota_mutex);
+}
+
+static void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf)
+{
+ const struct gfs2_quota *str = buf;
+
+ qu->qu_limit = be64_to_cpu(str->qu_limit);
+ qu->qu_warn = be64_to_cpu(str->qu_warn);
+ qu->qu_value = be64_to_cpu(str->qu_value);
+ qu->qu_ll_next = be32_to_cpu(str->qu_ll_next);
+}
+
+static void gfs2_quota_out(const struct gfs2_quota_host *qu, void *buf)
+{
+ struct gfs2_quota *str = buf;
+
+ str->qu_limit = cpu_to_be64(qu->qu_limit);
+ str->qu_warn = cpu_to_be64(qu->qu_warn);
+ str->qu_value = cpu_to_be64(qu->qu_value);
+ str->qu_ll_next = cpu_to_be32(qu->qu_ll_next);
+ memset(&str->qu_reserved, 0, sizeof(str->qu_reserved));
+}
+
+/**
+ * gfs2_adjust_quota
+ *
+ * This function was mostly borrowed from gfs2_block_truncate_page which was
+ * in turn mostly borrowed from ext3
+ */
+static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
+ s64 change, struct gfs2_quota_data *qd)
+{
+ struct inode *inode = &ip->i_inode;
+ struct address_space *mapping = inode->i_mapping;
+ unsigned long index = loc >> PAGE_CACHE_SHIFT;
+ unsigned offset = loc & (PAGE_CACHE_SIZE - 1);
+ unsigned blocksize, iblock, pos;
+ struct buffer_head *bh;
+ struct page *page;
+ void *kaddr;
+ char *ptr;
+ struct gfs2_quota_host qp;
+ s64 value;
+ int err = -EIO;
+
+ if (gfs2_is_stuffed(ip))
+ gfs2_unstuff_dinode(ip, NULL);
+
+ page = grab_cache_page(mapping, index);
+ if (!page)
+ return -ENOMEM;
+
+ blocksize = inode->i_sb->s_blocksize;
+ iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
+
+ if (!page_has_buffers(page))
+ create_empty_buffers(page, blocksize, 0);
+
+ bh = page_buffers(page);
+ pos = blocksize;
+ while (offset >= pos) {
+ bh = bh->b_this_page;
+ iblock++;
+ pos += blocksize;
+ }
+
+ if (!buffer_mapped(bh)) {
+ gfs2_block_map(inode, iblock, bh, 1);
+ if (!buffer_mapped(bh))
+ goto unlock;
+ }
+
+ if (PageUptodate(page))
+ set_buffer_uptodate(bh);
+
+ if (!buffer_uptodate(bh)) {
+ ll_rw_block(READ_META, 1, &bh);
+ wait_on_buffer(bh);
+ if (!buffer_uptodate(bh))
+ goto unlock;
+ }
+
+ gfs2_trans_add_bh(ip->i_gl, bh, 0);
+
+ kaddr = kmap_atomic(page, KM_USER0);
+ ptr = kaddr + offset;
+ gfs2_quota_in(&qp, ptr);
+ qp.qu_value += change;
+ value = qp.qu_value;
+ gfs2_quota_out(&qp, ptr);
+ flush_dcache_page(page);
+ kunmap_atomic(kaddr, KM_USER0);
+ err = 0;
+ qd->qd_qb.qb_magic = cpu_to_be32(GFS2_MAGIC);
+ qd->qd_qb.qb_value = cpu_to_be64(value);
+ ((struct gfs2_quota_lvb*)(qd->qd_gl->gl_lvb))->qb_magic = cpu_to_be32(GFS2_MAGIC);
+ ((struct gfs2_quota_lvb*)(qd->qd_gl->gl_lvb))->qb_value = cpu_to_be64(value);
+unlock:
+ unlock_page(page);
+ page_cache_release(page);
+ return err;
}
static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
{
struct gfs2_sbd *sdp = (*qda)->qd_gl->gl_sbd;
- struct gfs2_inode *ip = sdp->sd_quota_inode;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
unsigned int data_blocks, ind_blocks;
struct gfs2_holder *ghs, i_gh;
unsigned int qx, x;
struct gfs2_quota_data *qd;
- uint64_t offset;
- unsigned int nalloc = 0;
+ loff_t offset;
+ unsigned int nalloc = 0, blocks;
struct gfs2_alloc *al = NULL;
int error;
gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
&data_blocks, &ind_blocks);
- ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_KERNEL);
+ ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_NOFS);
if (!ghs)
return -ENOMEM;
nalloc++;
}
- if (nalloc) {
- al = gfs2_alloc_get(ip);
+ al = gfs2_alloc_get(ip);
+ if (!al) {
+ error = -ENOMEM;
+ goto out_gunlock;
+ }
+ /*
+ * 1 blk for unstuffing inode if stuffed. We add this extra
+ * block to the reservation unconditionally. If the inode
+ * doesn't need unstuffing, the block will be released to the
+ * rgrp since it won't be allocated during the transaction
+ */
+ al->al_requested = 1;
+ /* +1 in the end for block requested above for unstuffing */
+ blocks = num_qd * data_blocks + RES_DINODE + num_qd + 1;
- al->al_requested = nalloc * (data_blocks + ind_blocks);
+ if (nalloc)
+ al->al_requested += nalloc * (data_blocks + ind_blocks);
+ error = gfs2_inplace_reserve(ip);
+ if (error)
+ goto out_alloc;
- error = gfs2_inplace_reserve(ip);
- if (error)
- goto out_alloc;
-
- error = gfs2_trans_begin(sdp,
- al->al_rgd->rd_ri.ri_length +
- num_qd * data_blocks +
- nalloc * ind_blocks +
- RES_DINODE + num_qd +
- RES_STATFS, 0);
- if (error)
- goto out_ipres;
- } else {
- error = gfs2_trans_begin(sdp,
- num_qd * data_blocks +
- RES_DINODE + num_qd, 0);
- if (error)
- goto out_gunlock;
- }
+ if (nalloc)
+ blocks += al->al_rgd->rd_length + nalloc * ind_blocks + RES_STATFS;
- for (x = 0; x < num_qd; x++) {
- char buf[sizeof(struct gfs2_quota)];
- struct gfs2_quota q;
+ error = gfs2_trans_begin(sdp, blocks, 0);
+ if (error)
+ goto out_ipres;
+ for (x = 0; x < num_qd; x++) {
qd = qda[x];
offset = qd2offset(qd);
-
- /* The quota file may not be a multiple of
- sizeof(struct gfs2_quota) bytes. */
- memset(buf, 0, sizeof(struct gfs2_quota));
-
- error = gfs2_jdata_read_mem(ip, buf, offset,
- sizeof(struct gfs2_quota));
- if (error < 0)
- goto out_end_trans;
-
- gfs2_quota_in(&q, buf);
- q.qu_value += qda[x]->qd_change_sync;
- gfs2_quota_out(&q, buf);
-
- error = gfs2_jdata_write_mem(ip, buf, offset,
- sizeof(struct gfs2_quota));
- if (error < 0)
- goto out_end_trans;
- else if (error != sizeof(struct gfs2_quota)) {
- error = -EIO;
+ error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync,
+ (struct gfs2_quota_data *)
+ qd);
+ if (error)
goto out_end_trans;
- }
do_qc(qd, -qd->qd_change_sync);
-
- memset(&qd->qd_qb, 0, sizeof(struct gfs2_quota_lvb));
- qd->qd_qb.qb_magic = GFS2_MAGIC;
- qd->qd_qb.qb_limit = q.qu_limit;
- qd->qd_qb.qb_warn = q.qu_warn;
- qd->qd_qb.qb_value = q.qu_value;
-
- gfs2_quota_lvb_out(&qd->qd_qb, qd->qd_gl->gl_lvb);
}
error = 0;
- out_end_trans:
+out_end_trans:
gfs2_trans_end(sdp);
-
- out_ipres:
- if (nalloc)
- gfs2_inplace_release(ip);
-
- out_alloc:
- if (nalloc)
- gfs2_alloc_put(ip);
-
- out_gunlock:
+out_ipres:
+ gfs2_inplace_release(ip);
+out_alloc:
+ gfs2_alloc_put(ip);
+out_gunlock:
gfs2_glock_dq_uninit(&i_gh);
-
- out:
+out:
while (qx--)
gfs2_glock_dq_uninit(&ghs[qx]);
kfree(ghs);
- gfs2_log_flush_glock(ip->i_gl);
-
+ gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl);
return error;
}
struct gfs2_holder *q_gh)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_quota_inode);
struct gfs2_holder i_gh;
- struct gfs2_quota q;
+ struct gfs2_quota_host q;
char buf[sizeof(struct gfs2_quota)];
int error;
+ struct gfs2_quota_lvb *qlvb;
- restart:
+restart:
error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh);
if (error)
return error;
- gfs2_quota_lvb_in(&qd->qd_qb, qd->qd_gl->gl_lvb);
+ qd->qd_qb = *(struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
- if (force_refresh || qd->qd_qb.qb_magic != GFS2_MAGIC) {
+ if (force_refresh || qd->qd_qb.qb_magic != cpu_to_be32(GFS2_MAGIC)) {
+ loff_t pos;
gfs2_glock_dq_uninit(q_gh);
error = gfs2_glock_nq_init(qd->qd_gl,
- LM_ST_EXCLUSIVE, GL_NOCACHE,
- q_gh);
+ LM_ST_EXCLUSIVE, GL_NOCACHE,
+ q_gh);
if (error)
return error;
- error = gfs2_glock_nq_init(sdp->sd_quota_inode->i_gl,
- LM_ST_SHARED, 0,
- &i_gh);
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
if (error)
goto fail;
memset(buf, 0, sizeof(struct gfs2_quota));
-
- error = gfs2_jdata_read_mem(sdp->sd_quota_inode, buf,
- qd2offset(qd),
- sizeof(struct gfs2_quota));
+ pos = qd2offset(qd);
+ error = gfs2_internal_read(ip, NULL, buf, &pos,
+ sizeof(struct gfs2_quota));
if (error < 0)
goto fail_gunlock;
gfs2_glock_dq_uninit(&i_gh);
gfs2_quota_in(&q, buf);
-
- memset(&qd->qd_qb, 0, sizeof(struct gfs2_quota_lvb));
- qd->qd_qb.qb_magic = GFS2_MAGIC;
- qd->qd_qb.qb_limit = q.qu_limit;
- qd->qd_qb.qb_warn = q.qu_warn;
- qd->qd_qb.qb_value = q.qu_value;
-
- gfs2_quota_lvb_out(&qd->qd_qb, qd->qd_gl->gl_lvb);
+ qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lvb;
+ qlvb->qb_magic = cpu_to_be32(GFS2_MAGIC);
+ qlvb->__pad = 0;
+ qlvb->qb_limit = cpu_to_be64(q.qu_limit);
+ qlvb->qb_warn = cpu_to_be64(q.qu_warn);
+ qlvb->qb_value = cpu_to_be64(q.qu_value);
+ qd->qd_qb = *qlvb;
if (gfs2_glock_is_blocking(qd->qd_gl)) {
gfs2_glock_dq_uninit(q_gh);
return 0;
- fail_gunlock:
+fail_gunlock:
gfs2_glock_dq_uninit(&i_gh);
-
- fail:
+fail:
gfs2_glock_dq_uninit(q_gh);
-
return error;
}
-int gfs2_quota_lock(struct gfs2_inode *ip, uint32_t uid, uint32_t gid)
+int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
{
- struct gfs2_sbd *sdp = ip->i_sbd;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
int error = 0;
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
struct gfs2_tune *gt = &sdp->sd_tune;
- int64_t value;
+ s64 value;
unsigned int num, den;
int do_sync = 1;
if (!qd->qd_qb.qb_limit)
return 0;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
value = qd->qd_change;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
spin_lock(>->gt_spin);
num = gt->gt_quota_scale_num;
if (value < 0)
do_sync = 0;
- else if (qd->qd_qb.qb_value >= (int64_t)qd->qd_qb.qb_limit)
+ else if ((s64)be64_to_cpu(qd->qd_qb.qb_value) >=
+ (s64)be64_to_cpu(qd->qd_qb.qb_limit))
do_sync = 0;
else {
value *= gfs2_jindex_size(sdp) * num;
- do_div(value, den);
- value += qd->qd_qb.qb_value;
- if (value < (int64_t)qd->qd_qb.qb_limit)
+ value = div_s64(value, den);
+ value += (s64)be64_to_cpu(qd->qd_qb.qb_value);
+ if (value < (s64)be64_to_cpu(qd->qd_qb.qb_limit))
do_sync = 0;
}
void gfs2_quota_unlock(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qda[4];
unsigned int count = 0;
unsigned int x;
qd_unlock(qda[x]);
}
- out:
+out:
gfs2_quota_unhold(ip);
}
static int print_message(struct gfs2_quota_data *qd, char *type)
{
struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- char *line;
- int len;
-
- line = kmalloc(MAX_LINE, GFP_KERNEL);
- if (!line)
- return -ENOMEM;
-
- len = snprintf(line, MAX_LINE-1, "GFS2: fsid=%s: quota %s for %s %u\r\n",
- sdp->sd_fsname, type,
- (test_bit(QDF_USER, &qd->qd_flags)) ? "user" : "group",
- qd->qd_id);
- line[MAX_LINE-1] = 0;
-
- if (current->signal) { /* Is this test still required? */
- tty_write_message(current->signal->tty, line);
- }
- kfree(line);
+ printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\r\n",
+ sdp->sd_fsname, type,
+ (test_bit(QDF_USER, &qd->qd_flags)) ? "user" : "group",
+ qd->qd_id);
return 0;
}
-int gfs2_quota_check(struct gfs2_inode *ip, uint32_t uid, uint32_t gid)
+int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
{
- struct gfs2_sbd *sdp = ip->i_sbd;
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qd;
- int64_t value;
+ s64 value;
unsigned int x;
int error = 0;
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))))
continue;
- value = qd->qd_qb.qb_value;
- spin_lock(&sdp->sd_quota_spin);
+ value = (s64)be64_to_cpu(qd->qd_qb.qb_value);
+ spin_lock(&qd_lru_lock);
value += qd->qd_change;
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
- if (qd->qd_qb.qb_limit && (int64_t)qd->qd_qb.qb_limit < value) {
+ if (be64_to_cpu(qd->qd_qb.qb_limit) && (s64)be64_to_cpu(qd->qd_qb.qb_limit) < value) {
print_message(qd, "exceeded");
error = -EDQUOT;
break;
- } else if (qd->qd_qb.qb_warn &&
- (int64_t)qd->qd_qb.qb_warn < value &&
+ } else if (be64_to_cpu(qd->qd_qb.qb_warn) &&
+ (s64)be64_to_cpu(qd->qd_qb.qb_warn) < value &&
time_after_eq(jiffies, qd->qd_last_warn +
- gfs2_tune_get(sdp, gt_quota_warn_period) * HZ)) {
+ gfs2_tune_get(sdp,
+ gt_quota_warn_period) * HZ)) {
error = print_message(qd, "warning");
qd->qd_last_warn = jiffies;
}
return error;
}
-void gfs2_quota_change(struct gfs2_inode *ip, int64_t change,
- uint32_t uid, uint32_t gid)
+void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
+ u32 uid, u32 gid)
{
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qd;
unsigned int x;
- unsigned int found = 0;
- if (gfs2_assert_warn(ip->i_sbd, change))
+ if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), change))
return;
- if (ip->i_di.di_flags & GFS2_DIF_SYSTEM)
+ if (ip->i_diskflags & GFS2_DIF_SYSTEM)
return;
for (x = 0; x < al->al_qd_num; x++) {
if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
do_qc(qd, change);
- found++;
}
}
}
return error;
}
-int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, uint32_t id)
+int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)
{
struct gfs2_quota_data *qd;
struct gfs2_holder q_gh;
return error;
}
-int gfs2_quota_read(struct gfs2_sbd *sdp, int user, uint32_t id,
- struct gfs2_quota *q)
+static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf)
{
- struct gfs2_quota_data *qd;
- struct gfs2_holder q_gh;
- int error;
-
- if (((user) ? (id != current->fsuid) : (!in_group_p(id))) &&
- !capable(CAP_SYS_ADMIN))
- return -EACCES;
-
- error = qd_get(sdp, user, id, CREATE, &qd);
- if (error)
- return error;
+ const struct gfs2_quota_change *str = buf;
- error = do_glock(qd, NO_FORCE, &q_gh);
- if (error)
- goto out;
-
- memset(q, 0, sizeof(struct gfs2_quota));
- q->qu_limit = qd->qd_qb.qb_limit;
- q->qu_warn = qd->qd_qb.qb_warn;
- q->qu_value = qd->qd_qb.qb_value;
-
- spin_lock(&sdp->sd_quota_spin);
- q->qu_value += qd->qd_change;
- spin_unlock(&sdp->sd_quota_spin);
-
- gfs2_glock_dq_uninit(&q_gh);
-
- out:
- qd_put(qd);
-
- return error;
+ qc->qc_change = be64_to_cpu(str->qc_change);
+ qc->qc_flags = be32_to_cpu(str->qc_flags);
+ qc->qc_id = be32_to_cpu(str->qc_id);
}
int gfs2_quota_init(struct gfs2_sbd *sdp)
{
- struct gfs2_inode *ip = sdp->sd_qc_inode;
- unsigned int blocks = ip->i_di.di_size >> sdp->sd_sb.sb_bsize_shift;
+ struct gfs2_inode *ip = GFS2_I(sdp->sd_qc_inode);
+ unsigned int blocks = ip->i_disksize >> sdp->sd_sb.sb_bsize_shift;
unsigned int x, slot = 0;
unsigned int found = 0;
- uint64_t dblock;
- uint32_t extlen = 0;
+ u64 dblock;
+ u32 extlen = 0;
int error;
- if (!ip->i_di.di_size ||
- ip->i_di.di_size > (64 << 20) ||
- ip->i_di.di_size & (sdp->sd_sb.sb_bsize - 1)) {
+ if (!ip->i_disksize || ip->i_disksize > (64 << 20) ||
+ ip->i_disksize & (sdp->sd_sb.sb_bsize - 1)) {
gfs2_consist_inode(ip);
- return -EIO;
+ return -EIO;
}
sdp->sd_quota_slots = blocks * sdp->sd_qc_per_block;
- sdp->sd_quota_chunks = DIV_RU(sdp->sd_quota_slots, 8 * PAGE_SIZE);
+ sdp->sd_quota_chunks = DIV_ROUND_UP(sdp->sd_quota_slots, 8 * PAGE_SIZE);
error = -ENOMEM;
sdp->sd_quota_bitmap = kcalloc(sdp->sd_quota_chunks,
- sizeof(unsigned char *), GFP_KERNEL);
+ sizeof(unsigned char *), GFP_NOFS);
if (!sdp->sd_quota_bitmap)
return error;
for (x = 0; x < sdp->sd_quota_chunks; x++) {
- sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_NOFS);
if (!sdp->sd_quota_bitmap[x])
goto fail;
}
if (!extlen) {
int new = 0;
- error = gfs2_block_map(ip, x, &new, &dblock, &extlen);
+ error = gfs2_extent_map(&ip->i_inode, x, &new, &dblock, &extlen);
if (error)
goto fail;
}
- gfs2_meta_ra(ip->i_gl, dblock, extlen);
- error = gfs2_meta_read(ip->i_gl, dblock, DIO_START | DIO_WAIT,
- &bh);
- if (error)
- goto fail;
error = -EIO;
+ bh = gfs2_meta_ra(ip->i_gl, dblock, extlen);
+ if (!bh)
+ goto fail;
if (gfs2_metatype_check(sdp, bh, GFS2_METATYPE_QC)) {
brelse(bh);
goto fail;
}
- for (y = 0;
- y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots;
+ for (y = 0; y < sdp->sd_qc_per_block && slot < sdp->sd_quota_slots;
y++, slot++) {
- struct gfs2_quota_change qc;
+ struct gfs2_quota_change_host qc;
struct gfs2_quota_data *qd;
gfs2_quota_change_in(&qc, bh->b_data +
qd->qd_change = qc.qc_change;
qd->qd_slot = slot;
qd->qd_slot_count = 1;
- qd->qd_last_touched = jiffies;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
gfs2_icbit_munge(sdp, sdp->sd_quota_bitmap, slot, 1);
list_add(&qd->qd_list, &sdp->sd_quota_list);
atomic_inc(&sdp->sd_quota_count);
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
found++;
}
return 0;
- fail:
+fail:
gfs2_quota_cleanup(sdp);
return error;
}
-void gfs2_quota_scan(struct gfs2_sbd *sdp)
-{
- struct gfs2_quota_data *qd, *safe;
- LIST_HEAD(dead);
-
- spin_lock(&sdp->sd_quota_spin);
- list_for_each_entry_safe(qd, safe, &sdp->sd_quota_list, qd_list) {
- if (!qd->qd_count &&
- time_after_eq(jiffies, qd->qd_last_touched +
- gfs2_tune_get(sdp, gt_quota_cache_secs) * HZ)) {
- list_move(&qd->qd_list, &dead);
- gfs2_assert_warn(sdp,
- atomic_read(&sdp->sd_quota_count) > 0);
- atomic_dec(&sdp->sd_quota_count);
- }
- }
- spin_unlock(&sdp->sd_quota_spin);
-
- while (!list_empty(&dead)) {
- qd = list_entry(dead.next, struct gfs2_quota_data, qd_list);
- list_del(&qd->qd_list);
-
- gfs2_assert_warn(sdp, !qd->qd_change);
- gfs2_assert_warn(sdp, !qd->qd_slot_count);
- gfs2_assert_warn(sdp, !qd->qd_bh_count);
-
- gfs2_lvb_unhold(qd->qd_gl);
- kfree(qd);
- }
-}
-
void gfs2_quota_cleanup(struct gfs2_sbd *sdp)
{
struct list_head *head = &sdp->sd_quota_list;
struct gfs2_quota_data *qd;
unsigned int x;
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
while (!list_empty(head)) {
qd = list_entry(head->prev, struct gfs2_quota_data, qd_list);
- if (qd->qd_count > 1 ||
- (qd->qd_count && !test_bit(QDF_CHANGE, &qd->qd_flags))) {
+ if (atomic_read(&qd->qd_count) > 1 ||
+ (atomic_read(&qd->qd_count) &&
+ !test_bit(QDF_CHANGE, &qd->qd_flags))) {
list_move(&qd->qd_list, head);
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
schedule();
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
continue;
}
list_del(&qd->qd_list);
+ /* Also remove if this qd exists in the reclaim list */
+ if (!list_empty(&qd->qd_reclaim)) {
+ list_del_init(&qd->qd_reclaim);
+ atomic_dec(&qd_lru_count);
+ }
atomic_dec(&sdp->sd_quota_count);
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
- if (!qd->qd_count) {
+ if (!atomic_read(&qd->qd_count)) {
gfs2_assert_warn(sdp, !qd->qd_change);
gfs2_assert_warn(sdp, !qd->qd_slot_count);
} else
gfs2_assert_warn(sdp, qd->qd_slot_count == 1);
gfs2_assert_warn(sdp, !qd->qd_bh_count);
- gfs2_lvb_unhold(qd->qd_gl);
- kfree(qd);
+ gfs2_glock_put(qd->qd_gl);
+ kmem_cache_free(gfs2_quotad_cachep, qd);
- spin_lock(&sdp->sd_quota_spin);
+ spin_lock(&qd_lru_lock);
}
- spin_unlock(&sdp->sd_quota_spin);
+ spin_unlock(&qd_lru_lock);
gfs2_assert_warn(sdp, !atomic_read(&sdp->sd_quota_count));
}
}
+static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error)
+{
+ if (error == 0 || error == -EROFS)
+ return;
+ if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+ fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error);
+}
+
+static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg,
+ int (*fxn)(struct gfs2_sbd *sdp),
+ unsigned long t, unsigned long *timeo,
+ unsigned int *new_timeo)
+{
+ if (t >= *timeo) {
+ int error = fxn(sdp);
+ quotad_error(sdp, msg, error);
+ *timeo = gfs2_tune_get_i(&sdp->sd_tune, new_timeo) * HZ;
+ } else {
+ *timeo -= t;
+ }
+}
+
+static void quotad_check_trunc_list(struct gfs2_sbd *sdp)
+{
+ struct gfs2_inode *ip;
+
+ while(1) {
+ ip = NULL;
+ spin_lock(&sdp->sd_trunc_lock);
+ if (!list_empty(&sdp->sd_trunc_list)) {
+ ip = list_entry(sdp->sd_trunc_list.next,
+ struct gfs2_inode, i_trunc_list);
+ list_del_init(&ip->i_trunc_list);
+ }
+ spin_unlock(&sdp->sd_trunc_lock);
+ if (ip == NULL)
+ return;
+ gfs2_glock_finish_truncate(ip);
+ }
+}
+
+/**
+ * gfs2_quotad - Write cached quota changes into the quota file
+ * @sdp: Pointer to GFS2 superblock
+ *
+ */
+
+int gfs2_quotad(void *data)
+{
+ struct gfs2_sbd *sdp = data;
+ struct gfs2_tune *tune = &sdp->sd_tune;
+ unsigned long statfs_timeo = 0;
+ unsigned long quotad_timeo = 0;
+ unsigned long t = 0;
+ DEFINE_WAIT(wait);
+ int empty;
+
+ while (!kthread_should_stop()) {
+
+ /* Update the master statfs file */
+ quotad_check_timeo(sdp, "statfs", gfs2_statfs_sync, t,
+ &statfs_timeo, &tune->gt_statfs_quantum);
+
+ /* Update quota file */
+ quotad_check_timeo(sdp, "sync", gfs2_quota_sync, t,
+ "ad_timeo, &tune->gt_quota_quantum);
+
+ /* Check for & recover partially truncated inodes */
+ quotad_check_trunc_list(sdp);
+
+ if (freezing(current))
+ refrigerator();
+ t = min(quotad_timeo, statfs_timeo);
+
+ prepare_to_wait(&sdp->sd_quota_wait, &wait, TASK_INTERRUPTIBLE);
+ spin_lock(&sdp->sd_trunc_lock);
+ empty = list_empty(&sdp->sd_trunc_list);
+ spin_unlock(&sdp->sd_trunc_lock);
+ if (empty)
+ t -= schedule_timeout(t);
+ else
+ t = 0;
+ finish_wait(&sdp->sd_quota_wait, &wait);
+ }
+
+ return 0;
+}
+
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff