mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 19:29:37 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
Merge misc updates from Andrew Morton: "Bite-sized chunks this time, to avoid the MTA ratelimiting woes. - fs/notify updates - ocfs2 - some of MM" That laconic "some MM" is mainly the removal of remap_file_pages(), which is a big simplification of the VM, and which gets rid of a *lot* of random cruft and special cases because we no longer support the non-linear mappings that it used. From a user interface perspective, nothing has changed, because the remap_file_pages() syscall still exists, it's just done by emulating the old behavior by creating a lot of individual small mappings instead of one non-linear one. The emulation is slower than the old "native" non-linear mappings, but nobody really uses or cares about remap_file_pages(), and simplifying the VM is a big advantage. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits) memcg: zap memcg_slab_caches and memcg_slab_mutex memcg: zap memcg_name argument of memcg_create_kmem_cache memcg: zap __memcg_{charge,uncharge}_slab mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check mm: hugetlb: fix type of hugetlb_treat_as_movable variable mm, hugetlb: remove unnecessary lower bound on sysctl handlers"? mm: memory: merge shared-writable dirtying branches in do_wp_page() mm: memory: remove ->vm_file check on shared writable vmas xtensa: drop _PAGE_FILE and pte_file()-related helpers x86: drop _PAGE_FILE and pte_file()-related helpers unicore32: drop pte_file()-related helpers um: drop _PAGE_FILE and pte_file()-related helpers tile: drop pte_file()-related helpers sparc: drop pte_file()-related helpers sh: drop _PAGE_FILE and pte_file()-related helpers score: drop _PAGE_FILE and pte_file()-related helpers s390: drop pte_file()-related helpers parisc: drop _PAGE_FILE and pte_file()-related helpers openrisc: drop _PAGE_FILE and pte_file()-related helpers nios2: drop _PAGE_FILE and pte_file()-related helpers ...
1315 lines
36 KiB
C
1315 lines
36 KiB
C
/*
|
|
* Implementation of operations over local quota file
|
|
*/
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/quota.h>
|
|
#include <linux/quotaops.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <cluster/masklog.h>
|
|
|
|
#include "ocfs2_fs.h"
|
|
#include "ocfs2.h"
|
|
#include "inode.h"
|
|
#include "alloc.h"
|
|
#include "file.h"
|
|
#include "buffer_head_io.h"
|
|
#include "journal.h"
|
|
#include "sysfile.h"
|
|
#include "dlmglue.h"
|
|
#include "quota.h"
|
|
#include "uptodate.h"
|
|
#include "super.h"
|
|
#include "ocfs2_trace.h"
|
|
|
|
/* Number of local quota structures per block */
|
|
static inline unsigned int ol_quota_entries_per_block(struct super_block *sb)
|
|
{
|
|
return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) /
|
|
sizeof(struct ocfs2_local_disk_dqblk));
|
|
}
|
|
|
|
/* Number of blocks with entries in one chunk */
|
|
static inline unsigned int ol_chunk_blocks(struct super_block *sb)
|
|
{
|
|
return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) -
|
|
OCFS2_QBLK_RESERVED_SPACE) << 3) /
|
|
ol_quota_entries_per_block(sb);
|
|
}
|
|
|
|
/* Number of entries in a chunk bitmap */
|
|
static unsigned int ol_chunk_entries(struct super_block *sb)
|
|
{
|
|
return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb);
|
|
}
|
|
|
|
/* Offset of the chunk in quota file */
|
|
static unsigned int ol_quota_chunk_block(struct super_block *sb, int c)
|
|
{
|
|
/* 1 block for local quota file info, 1 block per chunk for chunk info */
|
|
return 1 + (ol_chunk_blocks(sb) + 1) * c;
|
|
}
|
|
|
|
static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off)
|
|
{
|
|
int epb = ol_quota_entries_per_block(sb);
|
|
|
|
return ol_quota_chunk_block(sb, c) + 1 + off / epb;
|
|
}
|
|
|
|
static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off)
|
|
{
|
|
int epb = ol_quota_entries_per_block(sb);
|
|
|
|
return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk);
|
|
}
|
|
|
|
/* Offset of the dquot structure in the quota file */
|
|
static loff_t ol_dqblk_off(struct super_block *sb, int c, int off)
|
|
{
|
|
return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) +
|
|
ol_dqblk_block_off(sb, c, off);
|
|
}
|
|
|
|
static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off)
|
|
{
|
|
return off & ((1 << sb->s_blocksize_bits) - 1);
|
|
}
|
|
|
|
/* Compute offset in the chunk of a structure with the given offset */
|
|
static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off)
|
|
{
|
|
int epb = ol_quota_entries_per_block(sb);
|
|
|
|
return ((off >> sb->s_blocksize_bits) -
|
|
ol_quota_chunk_block(sb, c) - 1) * epb
|
|
+ ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) /
|
|
sizeof(struct ocfs2_local_disk_dqblk);
|
|
}
|
|
|
|
/* Write bufferhead into the fs */
|
|
static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh,
|
|
void (*modify)(struct buffer_head *, void *), void *private)
|
|
{
|
|
struct super_block *sb = inode->i_sb;
|
|
handle_t *handle;
|
|
int status;
|
|
|
|
handle = ocfs2_start_trans(OCFS2_SB(sb),
|
|
OCFS2_QUOTA_BLOCK_UPDATE_CREDITS);
|
|
if (IS_ERR(handle)) {
|
|
status = PTR_ERR(handle);
|
|
mlog_errno(status);
|
|
return status;
|
|
}
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh,
|
|
OCFS2_JOURNAL_ACCESS_WRITE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
return status;
|
|
}
|
|
lock_buffer(bh);
|
|
modify(bh, private);
|
|
unlock_buffer(bh);
|
|
ocfs2_journal_dirty(handle, bh);
|
|
|
|
status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
return status;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Read quota block from a given logical offset.
|
|
*
|
|
* This function acquires ip_alloc_sem and thus it must not be called with a
|
|
* transaction started.
|
|
*/
|
|
static int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
|
|
struct buffer_head **bh)
|
|
{
|
|
int rc = 0;
|
|
struct buffer_head *tmp = *bh;
|
|
|
|
if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) {
|
|
ocfs2_error(inode->i_sb,
|
|
"Quota file %llu is probably corrupted! Requested "
|
|
"to read block %Lu but file has size only %Lu\n",
|
|
(unsigned long long)OCFS2_I(inode)->ip_blkno,
|
|
(unsigned long long)v_block,
|
|
(unsigned long long)i_size_read(inode));
|
|
return -EIO;
|
|
}
|
|
rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0,
|
|
ocfs2_validate_quota_block);
|
|
if (rc)
|
|
mlog_errno(rc);
|
|
|
|
/* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */
|
|
if (!rc && !*bh)
|
|
*bh = tmp;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Check whether we understand format of quota files */
|
|
static int ocfs2_local_check_quota_file(struct super_block *sb, int type)
|
|
{
|
|
unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS;
|
|
unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS;
|
|
unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS;
|
|
unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS;
|
|
unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
|
|
GROUP_QUOTA_SYSTEM_INODE };
|
|
struct buffer_head *bh = NULL;
|
|
struct inode *linode = sb_dqopt(sb)->files[type];
|
|
struct inode *ginode = NULL;
|
|
struct ocfs2_disk_dqheader *dqhead;
|
|
int status, ret = 0;
|
|
|
|
/* First check whether we understand local quota file */
|
|
status = ocfs2_read_quota_block(linode, 0, &bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
mlog(ML_ERROR, "failed to read quota file header (type=%d)\n",
|
|
type);
|
|
goto out_err;
|
|
}
|
|
dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data);
|
|
if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) {
|
|
mlog(ML_ERROR, "quota file magic does not match (%u != %u),"
|
|
" type=%d\n", le32_to_cpu(dqhead->dqh_magic),
|
|
lmagics[type], type);
|
|
goto out_err;
|
|
}
|
|
if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) {
|
|
mlog(ML_ERROR, "quota file version does not match (%u != %u),"
|
|
" type=%d\n", le32_to_cpu(dqhead->dqh_version),
|
|
lversions[type], type);
|
|
goto out_err;
|
|
}
|
|
brelse(bh);
|
|
bh = NULL;
|
|
|
|
/* Next check whether we understand global quota file */
|
|
ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type],
|
|
OCFS2_INVALID_SLOT);
|
|
if (!ginode) {
|
|
mlog(ML_ERROR, "cannot get global quota file inode "
|
|
"(type=%d)\n", type);
|
|
goto out_err;
|
|
}
|
|
/* Since the header is read only, we don't care about locking */
|
|
status = ocfs2_read_quota_block(ginode, 0, &bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
mlog(ML_ERROR, "failed to read global quota file header "
|
|
"(type=%d)\n", type);
|
|
goto out_err;
|
|
}
|
|
dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data);
|
|
if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) {
|
|
mlog(ML_ERROR, "global quota file magic does not match "
|
|
"(%u != %u), type=%d\n",
|
|
le32_to_cpu(dqhead->dqh_magic), gmagics[type], type);
|
|
goto out_err;
|
|
}
|
|
if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) {
|
|
mlog(ML_ERROR, "global quota file version does not match "
|
|
"(%u != %u), type=%d\n",
|
|
le32_to_cpu(dqhead->dqh_version), gversions[type],
|
|
type);
|
|
goto out_err;
|
|
}
|
|
|
|
ret = 1;
|
|
out_err:
|
|
brelse(bh);
|
|
iput(ginode);
|
|
return ret;
|
|
}
|
|
|
|
/* Release given list of quota file chunks */
|
|
static void ocfs2_release_local_quota_bitmaps(struct list_head *head)
|
|
{
|
|
struct ocfs2_quota_chunk *pos, *next;
|
|
|
|
list_for_each_entry_safe(pos, next, head, qc_chunk) {
|
|
list_del(&pos->qc_chunk);
|
|
brelse(pos->qc_headerbh);
|
|
kmem_cache_free(ocfs2_qf_chunk_cachep, pos);
|
|
}
|
|
}
|
|
|
|
/* Load quota bitmaps into memory */
|
|
static int ocfs2_load_local_quota_bitmaps(struct inode *inode,
|
|
struct ocfs2_local_disk_dqinfo *ldinfo,
|
|
struct list_head *head)
|
|
{
|
|
struct ocfs2_quota_chunk *newchunk;
|
|
int i, status;
|
|
|
|
INIT_LIST_HEAD(head);
|
|
for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) {
|
|
newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS);
|
|
if (!newchunk) {
|
|
ocfs2_release_local_quota_bitmaps(head);
|
|
return -ENOMEM;
|
|
}
|
|
newchunk->qc_num = i;
|
|
newchunk->qc_headerbh = NULL;
|
|
status = ocfs2_read_quota_block(inode,
|
|
ol_quota_chunk_block(inode->i_sb, i),
|
|
&newchunk->qc_headerbh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk);
|
|
ocfs2_release_local_quota_bitmaps(head);
|
|
return status;
|
|
}
|
|
list_add_tail(&newchunk->qc_chunk, head);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void olq_update_info(struct buffer_head *bh, void *private)
|
|
{
|
|
struct mem_dqinfo *info = private;
|
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
|
|
struct ocfs2_local_disk_dqinfo *ldinfo;
|
|
|
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
|
|
OCFS2_LOCAL_INFO_OFF);
|
|
spin_lock(&dq_data_lock);
|
|
ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags);
|
|
ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks);
|
|
ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks);
|
|
spin_unlock(&dq_data_lock);
|
|
}
|
|
|
|
static int ocfs2_add_recovery_chunk(struct super_block *sb,
|
|
struct ocfs2_local_disk_chunk *dchunk,
|
|
int chunk,
|
|
struct list_head *head)
|
|
{
|
|
struct ocfs2_recovery_chunk *rc;
|
|
|
|
rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS);
|
|
if (!rc)
|
|
return -ENOMEM;
|
|
rc->rc_chunk = chunk;
|
|
rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS);
|
|
if (!rc->rc_bitmap) {
|
|
kfree(rc);
|
|
return -ENOMEM;
|
|
}
|
|
memcpy(rc->rc_bitmap, dchunk->dqc_bitmap,
|
|
(ol_chunk_entries(sb) + 7) >> 3);
|
|
list_add_tail(&rc->rc_list, head);
|
|
return 0;
|
|
}
|
|
|
|
static void free_recovery_list(struct list_head *head)
|
|
{
|
|
struct ocfs2_recovery_chunk *next;
|
|
struct ocfs2_recovery_chunk *rchunk;
|
|
|
|
list_for_each_entry_safe(rchunk, next, head, rc_list) {
|
|
list_del(&rchunk->rc_list);
|
|
kfree(rchunk->rc_bitmap);
|
|
kfree(rchunk);
|
|
}
|
|
}
|
|
|
|
void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec)
|
|
{
|
|
int type;
|
|
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++)
|
|
free_recovery_list(&(rec->r_list[type]));
|
|
kfree(rec);
|
|
}
|
|
|
|
/* Load entries in our quota file we have to recover*/
|
|
static int ocfs2_recovery_load_quota(struct inode *lqinode,
|
|
struct ocfs2_local_disk_dqinfo *ldinfo,
|
|
int type,
|
|
struct list_head *head)
|
|
{
|
|
struct super_block *sb = lqinode->i_sb;
|
|
struct buffer_head *hbh;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int i, chunks = le32_to_cpu(ldinfo->dqi_chunks);
|
|
int status = 0;
|
|
|
|
for (i = 0; i < chunks; i++) {
|
|
hbh = NULL;
|
|
status = ocfs2_read_quota_block(lqinode,
|
|
ol_quota_chunk_block(sb, i),
|
|
&hbh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
break;
|
|
}
|
|
dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data;
|
|
if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb))
|
|
status = ocfs2_add_recovery_chunk(sb, dchunk, i, head);
|
|
brelse(hbh);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
if (status < 0)
|
|
free_recovery_list(head);
|
|
return status;
|
|
}
|
|
|
|
static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void)
|
|
{
|
|
int type;
|
|
struct ocfs2_quota_recovery *rec;
|
|
|
|
rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS);
|
|
if (!rec)
|
|
return NULL;
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++)
|
|
INIT_LIST_HEAD(&(rec->r_list[type]));
|
|
return rec;
|
|
}
|
|
|
|
/* Load information we need for quota recovery into memory */
|
|
struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
|
|
struct ocfs2_super *osb,
|
|
int slot_num)
|
|
{
|
|
unsigned int feature[OCFS2_MAXQUOTAS] = {
|
|
OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
|
|
OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
|
|
unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
|
|
LOCAL_GROUP_QUOTA_SYSTEM_INODE };
|
|
struct super_block *sb = osb->sb;
|
|
struct ocfs2_local_disk_dqinfo *ldinfo;
|
|
struct inode *lqinode;
|
|
struct buffer_head *bh;
|
|
int type;
|
|
int status = 0;
|
|
struct ocfs2_quota_recovery *rec;
|
|
|
|
printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for "
|
|
"slot %u\n", osb->dev_str, slot_num);
|
|
|
|
rec = ocfs2_alloc_quota_recovery();
|
|
if (!rec)
|
|
return ERR_PTR(-ENOMEM);
|
|
/* First init... */
|
|
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
|
|
if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
|
|
continue;
|
|
/* At this point, journal of the slot is already replayed so
|
|
* we can trust metadata and data of the quota file */
|
|
lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num);
|
|
if (!lqinode) {
|
|
status = -ENOENT;
|
|
goto out;
|
|
}
|
|
status = ocfs2_inode_lock_full(lqinode, NULL, 1,
|
|
OCFS2_META_LOCK_RECOVERY);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_put;
|
|
}
|
|
/* Now read local header */
|
|
bh = NULL;
|
|
status = ocfs2_read_quota_block(lqinode, 0, &bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
mlog(ML_ERROR, "failed to read quota file info header "
|
|
"(slot=%d type=%d)\n", slot_num, type);
|
|
goto out_lock;
|
|
}
|
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
|
|
OCFS2_LOCAL_INFO_OFF);
|
|
status = ocfs2_recovery_load_quota(lqinode, ldinfo, type,
|
|
&rec->r_list[type]);
|
|
brelse(bh);
|
|
out_lock:
|
|
ocfs2_inode_unlock(lqinode, 1);
|
|
out_put:
|
|
iput(lqinode);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
out:
|
|
if (status < 0) {
|
|
ocfs2_free_quota_recovery(rec);
|
|
rec = ERR_PTR(status);
|
|
}
|
|
return rec;
|
|
}
|
|
|
|
/* Sync changes in local quota file into global quota file and
|
|
* reinitialize local quota file.
|
|
* The function expects local quota file to be already locked and
|
|
* dqonoff_mutex locked. */
|
|
static int ocfs2_recover_local_quota_file(struct inode *lqinode,
|
|
int type,
|
|
struct ocfs2_quota_recovery *rec)
|
|
{
|
|
struct super_block *sb = lqinode->i_sb;
|
|
struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
struct ocfs2_local_disk_dqblk *dqblk;
|
|
struct dquot *dquot;
|
|
handle_t *handle;
|
|
struct buffer_head *hbh = NULL, *qbh = NULL;
|
|
int status = 0;
|
|
int bit, chunk;
|
|
struct ocfs2_recovery_chunk *rchunk, *next;
|
|
qsize_t spacechange, inodechange;
|
|
|
|
trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type);
|
|
|
|
list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) {
|
|
chunk = rchunk->rc_chunk;
|
|
hbh = NULL;
|
|
status = ocfs2_read_quota_block(lqinode,
|
|
ol_quota_chunk_block(sb, chunk),
|
|
&hbh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
break;
|
|
}
|
|
dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data;
|
|
for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) {
|
|
qbh = NULL;
|
|
status = ocfs2_read_quota_block(lqinode,
|
|
ol_dqblk_block(sb, chunk, bit),
|
|
&qbh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
break;
|
|
}
|
|
dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data +
|
|
ol_dqblk_block_off(sb, chunk, bit));
|
|
dquot = dqget(sb,
|
|
make_kqid(&init_user_ns, type,
|
|
le64_to_cpu(dqblk->dqb_id)));
|
|
if (!dquot) {
|
|
status = -EIO;
|
|
mlog(ML_ERROR, "Failed to get quota structure "
|
|
"for id %u, type %d. Cannot finish quota "
|
|
"file recovery.\n",
|
|
(unsigned)le64_to_cpu(dqblk->dqb_id),
|
|
type);
|
|
goto out_put_bh;
|
|
}
|
|
status = ocfs2_lock_global_qf(oinfo, 1);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_put_dquot;
|
|
}
|
|
|
|
handle = ocfs2_start_trans(OCFS2_SB(sb),
|
|
OCFS2_QSYNC_CREDITS);
|
|
if (IS_ERR(handle)) {
|
|
status = PTR_ERR(handle);
|
|
mlog_errno(status);
|
|
goto out_drop_lock;
|
|
}
|
|
mutex_lock(&sb_dqopt(sb)->dqio_mutex);
|
|
spin_lock(&dq_data_lock);
|
|
/* Add usage from quota entry into quota changes
|
|
* of our node. Auxiliary variables are important
|
|
* due to signedness */
|
|
spacechange = le64_to_cpu(dqblk->dqb_spacemod);
|
|
inodechange = le64_to_cpu(dqblk->dqb_inodemod);
|
|
dquot->dq_dqb.dqb_curspace += spacechange;
|
|
dquot->dq_dqb.dqb_curinodes += inodechange;
|
|
spin_unlock(&dq_data_lock);
|
|
/* We want to drop reference held by the crashed
|
|
* node. Since we have our own reference we know
|
|
* global structure actually won't be freed. */
|
|
status = ocfs2_global_release_dquot(dquot);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_commit;
|
|
}
|
|
/* Release local quota file entry */
|
|
status = ocfs2_journal_access_dq(handle,
|
|
INODE_CACHE(lqinode),
|
|
qbh, OCFS2_JOURNAL_ACCESS_WRITE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_commit;
|
|
}
|
|
lock_buffer(qbh);
|
|
WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap));
|
|
ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap);
|
|
le32_add_cpu(&dchunk->dqc_free, 1);
|
|
unlock_buffer(qbh);
|
|
ocfs2_journal_dirty(handle, qbh);
|
|
out_commit:
|
|
mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
|
|
ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
out_drop_lock:
|
|
ocfs2_unlock_global_qf(oinfo, 1);
|
|
out_put_dquot:
|
|
dqput(dquot);
|
|
out_put_bh:
|
|
brelse(qbh);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
brelse(hbh);
|
|
list_del(&rchunk->rc_list);
|
|
kfree(rchunk->rc_bitmap);
|
|
kfree(rchunk);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
if (status < 0)
|
|
free_recovery_list(&(rec->r_list[type]));
|
|
if (status)
|
|
mlog_errno(status);
|
|
return status;
|
|
}
|
|
|
|
/* Recover local quota files for given node different from us */
|
|
int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
|
|
struct ocfs2_quota_recovery *rec,
|
|
int slot_num)
|
|
{
|
|
unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
|
|
LOCAL_GROUP_QUOTA_SYSTEM_INODE };
|
|
struct super_block *sb = osb->sb;
|
|
struct ocfs2_local_disk_dqinfo *ldinfo;
|
|
struct buffer_head *bh;
|
|
handle_t *handle;
|
|
int type;
|
|
int status = 0;
|
|
struct inode *lqinode;
|
|
unsigned int flags;
|
|
|
|
printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for "
|
|
"slot %u\n", osb->dev_str, slot_num);
|
|
|
|
mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
|
|
if (list_empty(&(rec->r_list[type])))
|
|
continue;
|
|
trace_ocfs2_finish_quota_recovery(slot_num);
|
|
lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num);
|
|
if (!lqinode) {
|
|
status = -ENOENT;
|
|
goto out;
|
|
}
|
|
status = ocfs2_inode_lock_full(lqinode, NULL, 1,
|
|
OCFS2_META_LOCK_NOQUEUE);
|
|
/* Someone else is holding the lock? Then he must be
|
|
* doing the recovery. Just skip the file... */
|
|
if (status == -EAGAIN) {
|
|
printk(KERN_NOTICE "ocfs2: Skipping quota recovery on "
|
|
"device (%s) for slot %d because quota file is "
|
|
"locked.\n", osb->dev_str, slot_num);
|
|
status = 0;
|
|
goto out_put;
|
|
} else if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_put;
|
|
}
|
|
/* Now read local header */
|
|
bh = NULL;
|
|
status = ocfs2_read_quota_block(lqinode, 0, &bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
mlog(ML_ERROR, "failed to read quota file info header "
|
|
"(slot=%d type=%d)\n", slot_num, type);
|
|
goto out_lock;
|
|
}
|
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
|
|
OCFS2_LOCAL_INFO_OFF);
|
|
/* Is recovery still needed? */
|
|
flags = le32_to_cpu(ldinfo->dqi_flags);
|
|
if (!(flags & OLQF_CLEAN))
|
|
status = ocfs2_recover_local_quota_file(lqinode,
|
|
type,
|
|
rec);
|
|
/* We don't want to mark file as clean when it is actually
|
|
* active */
|
|
if (slot_num == osb->slot_num)
|
|
goto out_bh;
|
|
/* Mark quota file as clean if we are recovering quota file of
|
|
* some other node. */
|
|
handle = ocfs2_start_trans(osb,
|
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS);
|
|
if (IS_ERR(handle)) {
|
|
status = PTR_ERR(handle);
|
|
mlog_errno(status);
|
|
goto out_bh;
|
|
}
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode),
|
|
bh,
|
|
OCFS2_JOURNAL_ACCESS_WRITE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
lock_buffer(bh);
|
|
ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN);
|
|
unlock_buffer(bh);
|
|
ocfs2_journal_dirty(handle, bh);
|
|
out_trans:
|
|
ocfs2_commit_trans(osb, handle);
|
|
out_bh:
|
|
brelse(bh);
|
|
out_lock:
|
|
ocfs2_inode_unlock(lqinode, 1);
|
|
out_put:
|
|
iput(lqinode);
|
|
if (status < 0)
|
|
break;
|
|
}
|
|
out:
|
|
mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
|
|
kfree(rec);
|
|
return status;
|
|
}
|
|
|
|
/* Read information header from quota file */
|
|
static int ocfs2_local_read_info(struct super_block *sb, int type)
|
|
{
|
|
struct ocfs2_local_disk_dqinfo *ldinfo;
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct ocfs2_mem_dqinfo *oinfo;
|
|
struct inode *lqinode = sb_dqopt(sb)->files[type];
|
|
int status;
|
|
struct buffer_head *bh = NULL;
|
|
struct ocfs2_quota_recovery *rec;
|
|
int locked = 0;
|
|
|
|
/* We don't need the lock and we have to acquire quota file locks
|
|
* which will later depend on this lock */
|
|
mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
|
|
info->dqi_max_spc_limit = 0x7fffffffffffffffLL;
|
|
info->dqi_max_ino_limit = 0x7fffffffffffffffLL;
|
|
oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS);
|
|
if (!oinfo) {
|
|
mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota"
|
|
" info.");
|
|
goto out_err;
|
|
}
|
|
info->dqi_priv = oinfo;
|
|
oinfo->dqi_type = type;
|
|
INIT_LIST_HEAD(&oinfo->dqi_chunk);
|
|
oinfo->dqi_rec = NULL;
|
|
oinfo->dqi_lqi_bh = NULL;
|
|
oinfo->dqi_libh = NULL;
|
|
|
|
status = ocfs2_global_read_info(sb, type);
|
|
if (status < 0)
|
|
goto out_err;
|
|
|
|
status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_err;
|
|
}
|
|
locked = 1;
|
|
|
|
/* Now read local header */
|
|
status = ocfs2_read_quota_block(lqinode, 0, &bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
mlog(ML_ERROR, "failed to read quota file info header "
|
|
"(type=%d)\n", type);
|
|
goto out_err;
|
|
}
|
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data +
|
|
OCFS2_LOCAL_INFO_OFF);
|
|
oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags);
|
|
oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks);
|
|
oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks);
|
|
oinfo->dqi_libh = bh;
|
|
|
|
/* We crashed when using local quota file? */
|
|
if (!(oinfo->dqi_flags & OLQF_CLEAN)) {
|
|
rec = OCFS2_SB(sb)->quota_rec;
|
|
if (!rec) {
|
|
rec = ocfs2_alloc_quota_recovery();
|
|
if (!rec) {
|
|
status = -ENOMEM;
|
|
mlog_errno(status);
|
|
goto out_err;
|
|
}
|
|
OCFS2_SB(sb)->quota_rec = rec;
|
|
}
|
|
|
|
status = ocfs2_recovery_load_quota(lqinode, ldinfo, type,
|
|
&rec->r_list[type]);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
status = ocfs2_load_local_quota_bitmaps(lqinode,
|
|
ldinfo,
|
|
&oinfo->dqi_chunk);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_err;
|
|
}
|
|
|
|
/* Now mark quota file as used */
|
|
oinfo->dqi_flags &= ~OLQF_CLEAN;
|
|
status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_err;
|
|
}
|
|
|
|
mutex_lock(&sb_dqopt(sb)->dqio_mutex);
|
|
return 0;
|
|
out_err:
|
|
if (oinfo) {
|
|
iput(oinfo->dqi_gqinode);
|
|
ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock);
|
|
ocfs2_lock_res_free(&oinfo->dqi_gqlock);
|
|
brelse(oinfo->dqi_lqi_bh);
|
|
if (locked)
|
|
ocfs2_inode_unlock(lqinode, 1);
|
|
ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
|
|
kfree(oinfo);
|
|
}
|
|
brelse(bh);
|
|
mutex_lock(&sb_dqopt(sb)->dqio_mutex);
|
|
return -1;
|
|
}
|
|
|
|
/* Write local info to quota file */
|
|
static int ocfs2_local_write_info(struct super_block *sb, int type)
|
|
{
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv)
|
|
->dqi_libh;
|
|
int status;
|
|
|
|
status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info,
|
|
info);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Release info from memory */
|
|
static int ocfs2_local_free_info(struct super_block *sb, int type)
|
|
{
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
|
|
struct ocfs2_quota_chunk *chunk;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int mark_clean = 1, len;
|
|
int status;
|
|
|
|
iput(oinfo->dqi_gqinode);
|
|
ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock);
|
|
ocfs2_lock_res_free(&oinfo->dqi_gqlock);
|
|
list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) {
|
|
dchunk = (struct ocfs2_local_disk_chunk *)
|
|
(chunk->qc_headerbh->b_data);
|
|
if (chunk->qc_num < oinfo->dqi_chunks - 1) {
|
|
len = ol_chunk_entries(sb);
|
|
} else {
|
|
len = (oinfo->dqi_blocks -
|
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1)
|
|
* ol_quota_entries_per_block(sb);
|
|
}
|
|
/* Not all entries free? Bug! */
|
|
if (le32_to_cpu(dchunk->dqc_free) != len) {
|
|
mlog(ML_ERROR, "releasing quota file with used "
|
|
"entries (type=%d)\n", type);
|
|
mark_clean = 0;
|
|
}
|
|
}
|
|
ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
|
|
|
|
/* dqonoff_mutex protects us against racing with recovery thread... */
|
|
if (oinfo->dqi_rec) {
|
|
ocfs2_free_quota_recovery(oinfo->dqi_rec);
|
|
mark_clean = 0;
|
|
}
|
|
|
|
if (!mark_clean)
|
|
goto out;
|
|
|
|
/* Mark local file as clean */
|
|
oinfo->dqi_flags |= OLQF_CLEAN;
|
|
status = ocfs2_modify_bh(sb_dqopt(sb)->files[type],
|
|
oinfo->dqi_libh,
|
|
olq_update_info,
|
|
info);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1);
|
|
brelse(oinfo->dqi_libh);
|
|
brelse(oinfo->dqi_lqi_bh);
|
|
kfree(oinfo);
|
|
return 0;
|
|
}
|
|
|
|
static void olq_set_dquot(struct buffer_head *bh, void *private)
|
|
{
|
|
struct ocfs2_dquot *od = private;
|
|
struct ocfs2_local_disk_dqblk *dqblk;
|
|
struct super_block *sb = od->dq_dquot.dq_sb;
|
|
|
|
dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data
|
|
+ ol_dqblk_block_offset(sb, od->dq_local_off));
|
|
|
|
dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns,
|
|
od->dq_dquot.dq_id));
|
|
spin_lock(&dq_data_lock);
|
|
dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace -
|
|
od->dq_origspace);
|
|
dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes -
|
|
od->dq_originodes);
|
|
spin_unlock(&dq_data_lock);
|
|
trace_olq_set_dquot(
|
|
(unsigned long long)le64_to_cpu(dqblk->dqb_spacemod),
|
|
(unsigned long long)le64_to_cpu(dqblk->dqb_inodemod),
|
|
from_kqid(&init_user_ns, od->dq_dquot.dq_id));
|
|
}
|
|
|
|
/* Write dquot to local quota file */
|
|
int ocfs2_local_write_dquot(struct dquot *dquot)
|
|
{
|
|
struct super_block *sb = dquot->dq_sb;
|
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
|
|
struct buffer_head *bh;
|
|
struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type];
|
|
int status;
|
|
|
|
status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk,
|
|
&bh);
|
|
if (status) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
out:
|
|
brelse(bh);
|
|
return status;
|
|
}
|
|
|
|
/* Find free entry in local quota file */
|
|
static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb,
|
|
int type,
|
|
int *offset)
|
|
{
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
|
|
struct ocfs2_quota_chunk *chunk;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int found = 0, len;
|
|
|
|
list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) {
|
|
dchunk = (struct ocfs2_local_disk_chunk *)
|
|
chunk->qc_headerbh->b_data;
|
|
if (le32_to_cpu(dchunk->dqc_free) > 0) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!found)
|
|
return NULL;
|
|
|
|
if (chunk->qc_num < oinfo->dqi_chunks - 1) {
|
|
len = ol_chunk_entries(sb);
|
|
} else {
|
|
len = (oinfo->dqi_blocks -
|
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1)
|
|
* ol_quota_entries_per_block(sb);
|
|
}
|
|
|
|
found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0);
|
|
/* We failed? */
|
|
if (found == len) {
|
|
mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u"
|
|
" entries free (type=%d)\n", chunk->qc_num,
|
|
le32_to_cpu(dchunk->dqc_free), type);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
*offset = found;
|
|
return chunk;
|
|
}
|
|
|
|
/* Add new chunk to the local quota file */
|
|
static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk(
|
|
struct super_block *sb,
|
|
int type,
|
|
int *offset)
|
|
{
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
|
|
struct inode *lqinode = sb_dqopt(sb)->files[type];
|
|
struct ocfs2_quota_chunk *chunk = NULL;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int status;
|
|
handle_t *handle;
|
|
struct buffer_head *bh = NULL, *dbh = NULL;
|
|
u64 p_blkno;
|
|
|
|
/* We are protected by dqio_sem so no locking needed */
|
|
status = ocfs2_extend_no_holes(lqinode, NULL,
|
|
i_size_read(lqinode) + 2 * sb->s_blocksize,
|
|
i_size_read(lqinode));
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh,
|
|
i_size_read(lqinode) + 2 * sb->s_blocksize);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS);
|
|
if (!chunk) {
|
|
status = -ENOMEM;
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
/* Local quota info and two new blocks we initialize */
|
|
handle = ocfs2_start_trans(OCFS2_SB(sb),
|
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS +
|
|
2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS);
|
|
if (IS_ERR(handle)) {
|
|
status = PTR_ERR(handle);
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
/* Initialize chunk header */
|
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks,
|
|
&p_blkno, NULL, NULL);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
bh = sb_getblk(sb, p_blkno);
|
|
if (!bh) {
|
|
status = -ENOMEM;
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data;
|
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh);
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh,
|
|
OCFS2_JOURNAL_ACCESS_CREATE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
lock_buffer(bh);
|
|
dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb));
|
|
memset(dchunk->dqc_bitmap, 0,
|
|
sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) -
|
|
OCFS2_QBLK_RESERVED_SPACE);
|
|
unlock_buffer(bh);
|
|
ocfs2_journal_dirty(handle, bh);
|
|
|
|
/* Initialize new block with structures */
|
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1,
|
|
&p_blkno, NULL, NULL);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
dbh = sb_getblk(sb, p_blkno);
|
|
if (!dbh) {
|
|
status = -ENOMEM;
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh);
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh,
|
|
OCFS2_JOURNAL_ACCESS_CREATE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
lock_buffer(dbh);
|
|
memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE);
|
|
unlock_buffer(dbh);
|
|
ocfs2_journal_dirty(handle, dbh);
|
|
|
|
/* Update local quotafile info */
|
|
oinfo->dqi_blocks += 2;
|
|
oinfo->dqi_chunks++;
|
|
status = ocfs2_local_write_info(sb, type);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk);
|
|
chunk->qc_num = list_entry(chunk->qc_chunk.prev,
|
|
struct ocfs2_quota_chunk,
|
|
qc_chunk)->qc_num + 1;
|
|
chunk->qc_headerbh = bh;
|
|
*offset = 0;
|
|
return chunk;
|
|
out_trans:
|
|
ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
out:
|
|
brelse(bh);
|
|
brelse(dbh);
|
|
kmem_cache_free(ocfs2_qf_chunk_cachep, chunk);
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
/* Find free entry in local quota file */
|
|
static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file(
|
|
struct super_block *sb,
|
|
int type,
|
|
int *offset)
|
|
{
|
|
struct mem_dqinfo *info = sb_dqinfo(sb, type);
|
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;
|
|
struct ocfs2_quota_chunk *chunk;
|
|
struct inode *lqinode = sb_dqopt(sb)->files[type];
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int epb = ol_quota_entries_per_block(sb);
|
|
unsigned int chunk_blocks;
|
|
struct buffer_head *bh;
|
|
u64 p_blkno;
|
|
int status;
|
|
handle_t *handle;
|
|
|
|
if (list_empty(&oinfo->dqi_chunk))
|
|
return ocfs2_local_quota_add_chunk(sb, type, offset);
|
|
/* Is the last chunk full? */
|
|
chunk = list_entry(oinfo->dqi_chunk.prev,
|
|
struct ocfs2_quota_chunk, qc_chunk);
|
|
chunk_blocks = oinfo->dqi_blocks -
|
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1;
|
|
if (ol_chunk_blocks(sb) == chunk_blocks)
|
|
return ocfs2_local_quota_add_chunk(sb, type, offset);
|
|
|
|
/* We are protected by dqio_sem so no locking needed */
|
|
status = ocfs2_extend_no_holes(lqinode, NULL,
|
|
i_size_read(lqinode) + sb->s_blocksize,
|
|
i_size_read(lqinode));
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh,
|
|
i_size_read(lqinode) + sb->s_blocksize);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
/* Get buffer from the just added block */
|
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks,
|
|
&p_blkno, NULL, NULL);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
bh = sb_getblk(sb, p_blkno);
|
|
if (!bh) {
|
|
status = -ENOMEM;
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh);
|
|
|
|
/* Local quota info, chunk header and the new block we initialize */
|
|
handle = ocfs2_start_trans(OCFS2_SB(sb),
|
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS +
|
|
2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS);
|
|
if (IS_ERR(handle)) {
|
|
status = PTR_ERR(handle);
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
/* Zero created block */
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh,
|
|
OCFS2_JOURNAL_ACCESS_CREATE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
lock_buffer(bh);
|
|
memset(bh->b_data, 0, sb->s_blocksize);
|
|
unlock_buffer(bh);
|
|
ocfs2_journal_dirty(handle, bh);
|
|
|
|
/* Update chunk header */
|
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode),
|
|
chunk->qc_headerbh,
|
|
OCFS2_JOURNAL_ACCESS_WRITE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
|
|
dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data;
|
|
lock_buffer(chunk->qc_headerbh);
|
|
le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb));
|
|
unlock_buffer(chunk->qc_headerbh);
|
|
ocfs2_journal_dirty(handle, chunk->qc_headerbh);
|
|
|
|
/* Update file header */
|
|
oinfo->dqi_blocks++;
|
|
status = ocfs2_local_write_info(sb, type);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out_trans;
|
|
}
|
|
|
|
status = ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
*offset = chunk_blocks * epb;
|
|
return chunk;
|
|
out_trans:
|
|
ocfs2_commit_trans(OCFS2_SB(sb), handle);
|
|
out:
|
|
return ERR_PTR(status);
|
|
}
|
|
|
|
static void olq_alloc_dquot(struct buffer_head *bh, void *private)
|
|
{
|
|
int *offset = private;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
|
|
dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data;
|
|
ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap);
|
|
le32_add_cpu(&dchunk->dqc_free, -1);
|
|
}
|
|
|
|
/* Create dquot in the local file for given id */
|
|
int ocfs2_create_local_dquot(struct dquot *dquot)
|
|
{
|
|
struct super_block *sb = dquot->dq_sb;
|
|
int type = dquot->dq_id.type;
|
|
struct inode *lqinode = sb_dqopt(sb)->files[type];
|
|
struct ocfs2_quota_chunk *chunk;
|
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
|
|
int offset;
|
|
int status;
|
|
u64 pcount;
|
|
|
|
down_write(&OCFS2_I(lqinode)->ip_alloc_sem);
|
|
chunk = ocfs2_find_free_entry(sb, type, &offset);
|
|
if (!chunk) {
|
|
chunk = ocfs2_extend_local_quota_file(sb, type, &offset);
|
|
if (IS_ERR(chunk)) {
|
|
status = PTR_ERR(chunk);
|
|
goto out;
|
|
}
|
|
} else if (IS_ERR(chunk)) {
|
|
status = PTR_ERR(chunk);
|
|
goto out;
|
|
}
|
|
od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset);
|
|
od->dq_chunk = chunk;
|
|
status = ocfs2_extent_map_get_blocks(lqinode,
|
|
ol_dqblk_block(sb, chunk->qc_num, offset),
|
|
&od->dq_local_phys_blk,
|
|
&pcount,
|
|
NULL);
|
|
|
|
/* Initialize dquot structure on disk */
|
|
status = ocfs2_local_write_dquot(dquot);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
|
|
/* Mark structure as allocated */
|
|
status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot,
|
|
&offset);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
out:
|
|
up_write(&OCFS2_I(lqinode)->ip_alloc_sem);
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Release dquot structure from local quota file. ocfs2_release_dquot() has
|
|
* already started a transaction and written all changes to global quota file
|
|
*/
|
|
int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot)
|
|
{
|
|
int status;
|
|
int type = dquot->dq_id.type;
|
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot);
|
|
struct super_block *sb = dquot->dq_sb;
|
|
struct ocfs2_local_disk_chunk *dchunk;
|
|
int offset;
|
|
|
|
status = ocfs2_journal_access_dq(handle,
|
|
INODE_CACHE(sb_dqopt(sb)->files[type]),
|
|
od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE);
|
|
if (status < 0) {
|
|
mlog_errno(status);
|
|
goto out;
|
|
}
|
|
offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num,
|
|
od->dq_local_off);
|
|
dchunk = (struct ocfs2_local_disk_chunk *)
|
|
(od->dq_chunk->qc_headerbh->b_data);
|
|
/* Mark structure as freed */
|
|
lock_buffer(od->dq_chunk->qc_headerbh);
|
|
ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap);
|
|
le32_add_cpu(&dchunk->dqc_free, 1);
|
|
unlock_buffer(od->dq_chunk->qc_headerbh);
|
|
ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh);
|
|
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
static const struct quota_format_ops ocfs2_format_ops = {
|
|
.check_quota_file = ocfs2_local_check_quota_file,
|
|
.read_file_info = ocfs2_local_read_info,
|
|
.write_file_info = ocfs2_global_write_info,
|
|
.free_file_info = ocfs2_local_free_info,
|
|
};
|
|
|
|
struct quota_format_type ocfs2_quota_format = {
|
|
.qf_fmt_id = QFMT_OCFS2,
|
|
.qf_ops = &ocfs2_format_ops,
|
|
.qf_owner = THIS_MODULE
|
|
};
|