/*
* 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 "super.h"
#include "trans.h"
#include "inode.h"
-#include "ops_file.h"
#include "ops_address.h"
#include "util.h"
#define QUOTA_USER 1
#define QUOTA_GROUP 0
+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 u64 qd2offset(struct gfs2_quota_data *qd)
{
u64 offset;
struct gfs2_quota_data *qd;
int error;
- qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_KERNEL);
+ qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_NOFS);
if (!qd)
return -ENOMEM;
}
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;
bh_map.b_size = 1 << ip->i_inode.i_blkbits;
- error = gfs2_block_map(&ip->i_inode, block, 0, &bh_map);
+ error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0);
if (error)
goto fail;
error = gfs2_meta_read(ip->i_gl, bh_map.b_blocknr, DIO_WAIT, &bh);
(bh->b_data + sizeof(struct gfs2_meta_header) +
offset * sizeof(struct gfs2_quota_change));
- mutex_lock(&sdp->sd_quota_mutex);
+ mutex_unlock(&sdp->sd_quota_mutex);
return 0;
int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data **qd = al->al_qd;
int error;
void gfs2_quota_unhold(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));
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
*
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_SHIFT - 1);
+ unsigned offset = loc & (PAGE_CACHE_SIZE - 1);
unsigned blocksize, iblock, pos;
struct buffer_head *bh;
struct page *page;
void *kaddr;
- __be64 *ptr;
+ 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;
}
if (!buffer_mapped(bh)) {
- gfs2_get_block(inode, iblock, bh, 1);
+ gfs2_block_map(inode, iblock, bh, 1);
if (!buffer_mapped(bh))
goto unlock;
}
kaddr = kmap_atomic(page, KM_USER0);
ptr = kaddr + offset;
- value = (s64)be64_to_cpu(*ptr) + change;
- *ptr = cpu_to_be64(value);
+ 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);
unsigned int qx, x;
struct gfs2_quota_data *qd;
loff_t offset;
- unsigned int nalloc = 0;
+ 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;
+
+ 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);
error = gfs2_adjust_quota(ip, offset, qd->qd_change_sync,
(struct gfs2_quota_data *)
- qd->qd_gl->gl_lvb);
+ qd);
if (error)
goto out_end_trans;
out_end_trans:
gfs2_trans_end(sdp);
out_ipres:
- if (nalloc)
- gfs2_inplace_release(ip);
+ gfs2_inplace_release(ip);
out_alloc:
- if (nalloc)
- gfs2_alloc_put(ip);
+ gfs2_alloc_put(ip);
out_gunlock:
gfs2_glock_dq_uninit(&i_gh);
out:
struct gfs2_holder i_gh;
struct gfs2_quota_host q;
char buf[sizeof(struct gfs2_quota)];
- struct file_ra_state ra_state;
int error;
struct gfs2_quota_lvb *qlvb;
- file_ra_state_init(&ra_state, sdp->sd_quota_inode->i_mapping);
restart:
error = gfs2_glock_nq_init(qd->qd_gl, LM_ST_SHARED, 0, q_gh);
if (error)
memset(buf, 0, sizeof(struct gfs2_quota));
pos = qd2offset(qd);
- error = gfs2_internal_read(ip, &ra_state, buf,
- &pos, sizeof(struct gfs2_quota));
+ error = gfs2_internal_read(ip, NULL, buf, &pos,
+ sizeof(struct gfs2_quota));
if (error < 0)
goto fail_gunlock;
int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
unsigned int x;
int error = 0;
do_sync = 0;
else {
value *= gfs2_jindex_size(sdp) * num;
- do_div(value, den);
+ 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;
int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = &ip->i_alloc;
+ struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data *qd;
s64 value;
unsigned int x;
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(GFS2_SB(&ip->i_inode), change))
return;
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;
}
+static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf)
+{
+ const struct gfs2_quota_change *str = buf;
+
+ 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 = GFS2_I(sdp->sd_qc_inode);
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;
}
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