#include <linux/capability.h>
#include <linux/quotaops.h>
#include <linux/writeback.h> /* for inode_lock, oddly enough.. */
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-#include <net/netlink.h>
-#include <net/genetlink.h>
-#endif
#include <asm/uaccess.h>
* i_mutex on quota files is special (it's below dqio_mutex)
*/
-static DEFINE_SPINLOCK(dq_list_lock);
-static DEFINE_SPINLOCK(dq_state_lock);
-DEFINE_SPINLOCK(dq_data_lock);
+static __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_list_lock);
+static __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_state_lock);
+__cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_data_lock);
EXPORT_SYMBOL(dq_data_lock);
static char *quotatypes[] = INITQFNAMES;
struct quota_format_type **actqf;
spin_lock(&dq_list_lock);
- for (actqf = "a_formats; *actqf && *actqf != fmt; actqf = &(*actqf)->qf_next);
+ for (actqf = "a_formats; *actqf && *actqf != fmt;
+ actqf = &(*actqf)->qf_next)
+ ;
if (*actqf)
*actqf = (*actqf)->qf_next;
spin_unlock(&dq_list_lock);
struct quota_format_type *actqf;
spin_lock(&dq_list_lock);
- for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id; actqf = actqf->qf_next);
+ for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id;
+ actqf = actqf->qf_next)
+ ;
if (!actqf || !try_module_get(actqf->qf_owner)) {
int qm;
spin_unlock(&dq_list_lock);
- for (qm = 0; module_names[qm].qm_fmt_id && module_names[qm].qm_fmt_id != id; qm++);
- if (!module_names[qm].qm_fmt_id || request_module(module_names[qm].qm_mod_name))
+ for (qm = 0; module_names[qm].qm_fmt_id &&
+ module_names[qm].qm_fmt_id != id; qm++)
+ ;
+ if (!module_names[qm].qm_fmt_id ||
+ request_module(module_names[qm].qm_mod_name))
return NULL;
spin_lock(&dq_list_lock);
- for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id; actqf = actqf->qf_next);
+ for (actqf = quota_formats; actqf && actqf->qf_fmt_id != id;
+ actqf = actqf->qf_next)
+ ;
if (actqf && !try_module_get(actqf->qf_owner))
actqf = NULL;
}
*/
static inline void insert_dquot_hash(struct dquot *dquot)
{
- struct hlist_head *head = dquot_hash + hashfn(dquot->dq_sb, dquot->dq_id, dquot->dq_type);
+ struct hlist_head *head;
+ head = dquot_hash + hashfn(dquot->dq_sb, dquot->dq_id, dquot->dq_type);
hlist_add_head(&dquot->dq_hash, head);
}
hlist_del_init(&dquot->dq_hash);
}
-static inline struct dquot *find_dquot(unsigned int hashent, struct super_block *sb, unsigned int id, int type)
+static struct dquot *find_dquot(unsigned int hashent, struct super_block *sb,
+ unsigned int id, int type)
{
struct hlist_node *node;
struct dquot *dquot;
hlist_for_each (node, dquot_hash+hashent) {
dquot = hlist_entry(node, struct dquot, dq_hash);
- if (dquot->dq_sb == sb && dquot->dq_id == id && dquot->dq_type == type)
+ if (dquot->dq_sb == sb && dquot->dq_id == id &&
+ dquot->dq_type == type)
return dquot;
}
- return NODQUOT;
+ return NULL;
}
/* Add a dquot to the tail of the free list */
}
EXPORT_SYMBOL(dquot_mark_dquot_dirty);
+/* Dirtify all the dquots - this can block when journalling */
+static inline int mark_all_dquot_dirty(struct dquot * const *dquot)
+{
+ int ret, err, cnt;
+
+ ret = err = 0;
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (dquot[cnt])
+ /* Even in case of error we have to continue */
+ ret = mark_dquot_dirty(dquot[cnt]);
+ if (!err)
+ err = ret;
+ }
+ return err;
+}
+
+static inline void dqput_all(struct dquot **dquot)
+{
+ unsigned int cnt;
+
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++)
+ dqput(dquot[cnt]);
+}
+
/* This function needs dq_list_lock */
static inline int clear_dquot_dirty(struct dquot *dquot)
{
if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && !dquot->dq_off) {
ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
/* Write the info if needed */
- if (info_dirty(&dqopt->info[dquot->dq_type]))
- ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
+ if (info_dirty(&dqopt->info[dquot->dq_type])) {
+ ret2 = dqopt->ops[dquot->dq_type]->write_file_info(
+ dquot->dq_sb, dquot->dq_type);
+ }
if (ret < 0)
goto out_iolock;
if (ret2 < 0) {
* => we have better not writing it */
if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
- if (info_dirty(&dqopt->info[dquot->dq_type]))
- ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
+ if (info_dirty(&dqopt->info[dquot->dq_type])) {
+ ret2 = dqopt->ops[dquot->dq_type]->write_file_info(
+ dquot->dq_sb, dquot->dq_type);
+ }
if (ret >= 0)
ret = ret2;
}
if (dqopt->ops[dquot->dq_type]->release_dqblk) {
ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
/* Write the info */
- if (info_dirty(&dqopt->info[dquot->dq_type]))
- ret2 = dqopt->ops[dquot->dq_type]->write_file_info(dquot->dq_sb, dquot->dq_type);
+ if (info_dirty(&dqopt->info[dquot->dq_type])) {
+ ret2 = dqopt->ops[dquot->dq_type]->write_file_info(
+ dquot->dq_sb, dquot->dq_type);
+ }
if (ret >= 0)
ret = ret2;
}
spin_lock(&dq_list_lock);
dirty = &dqopt->info[cnt].dqi_dirty_list;
while (!list_empty(dirty)) {
- dquot = list_first_entry(dirty, struct dquot, dq_dirty);
+ dquot = list_first_entry(dirty, struct dquot,
+ dq_dirty);
/* Dirty and inactive can be only bad dquot... */
if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
clear_dquot_dirty(dquot);
dquot = sb->dq_op->alloc_dquot(sb, type);
if(!dquot)
- return NODQUOT;
+ return NULL;
mutex_init(&dquot->dq_lock);
INIT_LIST_HEAD(&dquot->dq_free);
struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
{
unsigned int hashent = hashfn(sb, id, type);
- struct dquot *dquot = NODQUOT, *empty = NODQUOT;
+ struct dquot *dquot = NULL, *empty = NULL;
if (!sb_has_quota_active(sb, type))
- return NODQUOT;
+ return NULL;
we_slept:
spin_lock(&dq_list_lock);
spin_lock(&dq_state_lock);
}
spin_unlock(&dq_state_lock);
- if ((dquot = find_dquot(hashent, sb, id, type)) == NODQUOT) {
- if (empty == NODQUOT) {
+ dquot = find_dquot(hashent, sb, id, type);
+ if (!dquot) {
+ if (!empty) {
spin_unlock(&dq_list_lock);
- if ((empty = get_empty_dquot(sb, type)) == NODQUOT)
+ empty = get_empty_dquot(sb, type);
+ if (!empty)
schedule(); /* Try to wait for a moment... */
goto we_slept;
}
dquot = empty;
- empty = NODQUOT;
+ empty = NULL;
dquot->dq_id = id;
/* all dquots go on the inuse_list */
put_inuse(dquot);
dqstats.lookups++;
spin_unlock(&dq_list_lock);
}
- /* Wait for dq_lock - after this we know that either dquot_release() is already
- * finished or it will be canceled due to dq_count > 1 test */
+ /* Wait for dq_lock - after this we know that either dquot_release() is
+ * already finished or it will be canceled due to dq_count > 1 test */
wait_on_dquot(dquot);
- /* Read the dquot and instantiate it (everything done only if needed) */
- if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && sb->dq_op->acquire_dquot(dquot) < 0) {
+ /* Read the dquot / allocate space in quota file */
+ if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) &&
+ sb->dq_op->acquire_dquot(dquot) < 0) {
dqput(dquot);
- dquot = NODQUOT;
+ dquot = NULL;
goto out;
}
#ifdef __DQUOT_PARANOIA
if (IS_NOQUOTA(inode))
return 0;
if (type != -1)
- return inode->i_dquot[type] == NODQUOT;
+ return !inode->i_dquot[type];
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
return 1;
return 0;
}
spin_lock(&inode_lock);
list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+ if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE|I_NEW))
+ continue;
if (!atomic_read(&inode->i_writecount))
continue;
if (!dqinit_needed(inode, type))
continue;
- if (inode->i_state & (I_FREEING|I_WILL_FREE))
- continue;
__iget(inode);
spin_unlock(&inode_lock);
iput(old_inode);
}
-/* Return 0 if dqput() won't block (note that 1 doesn't necessarily mean blocking) */
+/*
+ * Return 0 if dqput() won't block.
+ * (note that 1 doesn't necessarily mean blocking)
+ */
static inline int dqput_blocks(struct dquot *dquot)
{
if (atomic_read(&dquot->dq_count) <= 1)
return 0;
}
-/* Remove references to dquots from inode - add dquot to list for freeing if needed */
-/* We can't race with anybody because we hold dqptr_sem for writing... */
+/*
+ * Remove references to dquots from inode and add dquot to list for freeing
+ * if we have the last referece to dquot
+ * We can't race with anybody because we hold dqptr_sem for writing...
+ */
static int remove_inode_dquot_ref(struct inode *inode, int type,
struct list_head *tofree_head)
{
struct dquot *dquot = inode->i_dquot[type];
- inode->i_dquot[type] = NODQUOT;
- if (dquot != NODQUOT) {
+ inode->i_dquot[type] = NULL;
+ if (dquot) {
if (dqput_blocks(dquot)) {
#ifdef __DQUOT_PARANOIA
if (atomic_read(&dquot->dq_count) != 1)
printk(KERN_WARNING "VFS: Adding dquot with dq_count %d to dispose list.\n", atomic_read(&dquot->dq_count));
#endif
spin_lock(&dq_list_lock);
- list_add(&dquot->dq_free, tofree_head); /* As dquot must have currently users it can't be on the free list... */
+ /* As dquot must have currently users it can't be on
+ * the free list... */
+ list_add(&dquot->dq_free, tofree_head);
spin_unlock(&dq_list_lock);
return 1;
}
return 0;
}
-/* Free list of dquots - called from inode.c */
-/* dquots are removed from inodes, no new references can be got so we are the only ones holding reference */
+/*
+ * Free list of dquots
+ * Dquots are removed from inodes and no new references can be got so we are
+ * the only ones holding reference
+ */
static void put_dquot_list(struct list_head *tofree_head)
{
struct list_head *act_head;
struct dquot *dquot;
act_head = tofree_head->next;
- /* So now we have dquots on the list... Just free them */
while (act_head != tofree_head) {
dquot = list_entry(act_head, struct dquot, dq_free);
act_head = act_head->next;
- list_del_init(&dquot->dq_free); /* Remove dquot from the list so we won't have problems... */
+ /* Remove dquot from the list so we won't have problems... */
+ list_del_init(&dquot->dq_free);
dqput(dquot);
}
}
spin_lock(&inode_lock);
list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
+ /*
+ * We have to scan also I_NEW inodes because they can already
+ * have quota pointer initialized. Luckily, we need to touch
+ * only quota pointers and these have separate locking
+ * (dqptr_sem).
+ */
if (!IS_NOQUOTA(inode))
remove_inode_dquot_ref(inode, type, tofree_head);
}
dquot->dq_dqb.dqb_rsvspace -= number;
}
-static inline void dquot_decr_inodes(struct dquot *dquot, qsize_t number)
+static void dquot_decr_inodes(struct dquot *dquot, qsize_t number)
{
if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
dquot->dq_dqb.dqb_curinodes >= number)
clear_bit(DQ_INODES_B, &dquot->dq_flags);
}
-static inline void dquot_decr_space(struct dquot *dquot, qsize_t number)
+static void dquot_decr_space(struct dquot *dquot, qsize_t number)
{
if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NEGATIVE_USAGE ||
dquot->dq_dqb.dqb_curspace >= number)
#ifdef CONFIG_PRINT_QUOTA_WARNING
static int flag_print_warnings = 1;
-static inline int need_print_warning(struct dquot *dquot)
+static int need_print_warning(struct dquot *dquot)
{
if (!flag_print_warnings)
return 0;
}
#endif
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
-
-/* Netlink family structure for quota */
-static struct genl_family quota_genl_family = {
- .id = GENL_ID_GENERATE,
- .hdrsize = 0,
- .name = "VFS_DQUOT",
- .version = 1,
- .maxattr = QUOTA_NL_A_MAX,
-};
-
-/* Send warning to userspace about user which exceeded quota */
-static void send_warning(const struct dquot *dquot, const char warntype)
-{
- static atomic_t seq;
- struct sk_buff *skb;
- void *msg_head;
- int ret;
- int msg_size = 4 * nla_total_size(sizeof(u32)) +
- 2 * nla_total_size(sizeof(u64));
-
- /* We have to allocate using GFP_NOFS as we are called from a
- * filesystem performing write and thus further recursion into
- * the fs to free some data could cause deadlocks. */
- skb = genlmsg_new(msg_size, GFP_NOFS);
- if (!skb) {
- printk(KERN_ERR
- "VFS: Not enough memory to send quota warning.\n");
- return;
- }
- msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
- "a_genl_family, 0, QUOTA_NL_C_WARNING);
- if (!msg_head) {
- printk(KERN_ERR
- "VFS: Cannot store netlink header in quota warning.\n");
- goto err_out;
- }
- ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, dquot->dq_type);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, dquot->dq_id);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MAJOR,
- MAJOR(dquot->dq_sb->s_dev));
- if (ret)
- goto attr_err_out;
- ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR,
- MINOR(dquot->dq_sb->s_dev));
- if (ret)
- goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
- if (ret)
- goto attr_err_out;
- genlmsg_end(skb, msg_head);
-
- ret = genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
- if (ret < 0 && ret != -ESRCH)
- printk(KERN_ERR
- "VFS: Failed to send notification message: %d\n", ret);
- return;
-attr_err_out:
- printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
-err_out:
- kfree_skb(skb);
-}
-#endif
/*
* Write warnings to the console and send warning messages over netlink.
*
* Note that this function can sleep.
*/
-static inline void flush_warnings(struct dquot * const *dquots, char *warntype)
+static void flush_warnings(struct dquot *const *dquots, char *warntype)
{
+ struct dquot *dq;
int i;
- for (i = 0; i < MAXQUOTAS; i++)
- if (dquots[i] != NODQUOT && warntype[i] != QUOTA_NL_NOWARN &&
- !warning_issued(dquots[i], warntype[i])) {
+ for (i = 0; i < MAXQUOTAS; i++) {
+ dq = dquots[i];
+ if (dq && warntype[i] != QUOTA_NL_NOWARN &&
+ !warning_issued(dq, warntype[i])) {
#ifdef CONFIG_PRINT_QUOTA_WARNING
- print_warning(dquots[i], warntype[i]);
-#endif
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
- send_warning(dquots[i], warntype[i]);
+ print_warning(dq, warntype[i]);
#endif
+ quota_send_warning(dq->dq_type, dq->dq_id,
+ dq->dq_sb->s_dev, warntype[i]);
}
+ }
}
-static inline char ignore_hardlimit(struct dquot *dquot)
+static int ignore_hardlimit(struct dquot *dquot)
{
struct mem_dqinfo *info = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_type];
return capable(CAP_SYS_RESOURCE) &&
- (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD || !(info->dqi_flags & V1_DQF_RSQUASH));
+ (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD ||
+ !(info->dqi_flags & V1_DQF_RSQUASH));
}
/* needs dq_data_lock */
static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
{
+ qsize_t newinodes = dquot->dq_dqb.dqb_curinodes + inodes;
+
*warntype = QUOTA_NL_NOWARN;
if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
test_bit(DQ_FAKE_B, &dquot->dq_flags))
return QUOTA_OK;
if (dquot->dq_dqb.dqb_ihardlimit &&
- (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_ihardlimit &&
+ newinodes > dquot->dq_dqb.dqb_ihardlimit &&
!ignore_hardlimit(dquot)) {
*warntype = QUOTA_NL_IHARDWARN;
return NO_QUOTA;
}
if (dquot->dq_dqb.dqb_isoftlimit &&
- (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_isoftlimit &&
- dquot->dq_dqb.dqb_itime && get_seconds() >= dquot->dq_dqb.dqb_itime &&
+ newinodes > dquot->dq_dqb.dqb_isoftlimit &&
+ dquot->dq_dqb.dqb_itime &&
+ get_seconds() >= dquot->dq_dqb.dqb_itime &&
!ignore_hardlimit(dquot)) {
*warntype = QUOTA_NL_ISOFTLONGWARN;
return NO_QUOTA;
}
if (dquot->dq_dqb.dqb_isoftlimit &&
- (dquot->dq_dqb.dqb_curinodes + inodes) > dquot->dq_dqb.dqb_isoftlimit &&
+ newinodes > dquot->dq_dqb.dqb_isoftlimit &&
dquot->dq_dqb.dqb_itime == 0) {
*warntype = QUOTA_NL_ISOFTWARN;
- dquot->dq_dqb.dqb_itime = get_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace;
+ dquot->dq_dqb.dqb_itime = get_seconds() +
+ sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace;
}
return QUOTA_OK;
static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *warntype)
{
qsize_t tspace;
+ struct super_block *sb = dquot->dq_sb;
*warntype = QUOTA_NL_NOWARN;
- if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
+ if (!sb_has_quota_limits_enabled(sb, dquot->dq_type) ||
test_bit(DQ_FAKE_B, &dquot->dq_flags))
return QUOTA_OK;
if (dquot->dq_dqb.dqb_bsoftlimit &&
tspace > dquot->dq_dqb.dqb_bsoftlimit &&
- dquot->dq_dqb.dqb_btime && get_seconds() >= dquot->dq_dqb.dqb_btime &&
+ dquot->dq_dqb.dqb_btime &&
+ get_seconds() >= dquot->dq_dqb.dqb_btime &&
!ignore_hardlimit(dquot)) {
if (!prealloc)
*warntype = QUOTA_NL_BSOFTLONGWARN;
dquot->dq_dqb.dqb_btime == 0) {
if (!prealloc) {
*warntype = QUOTA_NL_BSOFTWARN;
- dquot->dq_dqb.dqb_btime = get_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_bgrace;
+ dquot->dq_dqb.dqb_btime = get_seconds() +
+ sb_dqopt(sb)->info[dquot->dq_type].dqi_bgrace;
}
else
/*
static int info_idq_free(struct dquot *dquot, qsize_t inodes)
{
+ qsize_t newinodes;
+
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit ||
!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type))
return QUOTA_NL_NOWARN;
- if (dquot->dq_dqb.dqb_curinodes - inodes <= dquot->dq_dqb.dqb_isoftlimit)
+ newinodes = dquot->dq_dqb.dqb_curinodes - inodes;
+ if (newinodes <= dquot->dq_dqb.dqb_isoftlimit)
return QUOTA_NL_ISOFTBELOW;
if (dquot->dq_dqb.dqb_curinodes >= dquot->dq_dqb.dqb_ihardlimit &&
- dquot->dq_dqb.dqb_curinodes - inodes < dquot->dq_dqb.dqb_ihardlimit)
+ newinodes < dquot->dq_dqb.dqb_ihardlimit)
return QUOTA_NL_IHARDBELOW;
return QUOTA_NL_NOWARN;
}
{
unsigned int id = 0;
int cnt, ret = 0;
- struct dquot *got[MAXQUOTAS] = { NODQUOT, NODQUOT };
+ struct dquot *got[MAXQUOTAS] = { NULL, NULL };
struct super_block *sb = inode->i_sb;
/* First test before acquiring mutex - solves deadlocks when we
/* Avoid races with quotaoff() */
if (!sb_has_quota_active(sb, cnt))
continue;
- if (inode->i_dquot[cnt] == NODQUOT) {
+ if (!inode->i_dquot[cnt]) {
inode->i_dquot[cnt] = got[cnt];
- got[cnt] = NODQUOT;
+ got[cnt] = NULL;
}
}
out_err:
up_write(&sb_dqopt(sb)->dqptr_sem);
/* Drop unused references */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- dqput(got[cnt]);
+ dqput_all(got);
return ret;
}
EXPORT_SYMBOL(dquot_initialize);
down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
put[cnt] = inode->i_dquot[cnt];
- inode->i_dquot[cnt] = NODQUOT;
+ inode->i_dquot[cnt] = NULL;
}
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
-
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- dqput(put[cnt]);
+ dqput_all(put);
return 0;
}
EXPORT_SYMBOL(dquot_drop);
* must assure that nobody can come after the DQUOT_DROP and
* add quota pointers back anyway */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt] != NODQUOT)
+ if (inode->i_dquot[cnt])
break;
if (cnt < MAXQUOTAS)
inode->i_sb->dq_op->drop(inode);
EXPORT_SYMBOL(vfs_dq_drop);
/*
+ * inode_reserved_space is managed internally by quota, and protected by
+ * i_lock similar to i_blocks+i_bytes.
+ */
+static qsize_t *inode_reserved_space(struct inode * inode)
+{
+ /* Filesystem must explicitly define it's own method in order to use
+ * quota reservation interface */
+ BUG_ON(!inode->i_sb->dq_op->get_reserved_space);
+ return inode->i_sb->dq_op->get_reserved_space(inode);
+}
+
+static void inode_add_rsv_space(struct inode *inode, qsize_t number)
+{
+ spin_lock(&inode->i_lock);
+ *inode_reserved_space(inode) += number;
+ spin_unlock(&inode->i_lock);
+}
+
+
+static void inode_claim_rsv_space(struct inode *inode, qsize_t number)
+{
+ spin_lock(&inode->i_lock);
+ *inode_reserved_space(inode) -= number;
+ __inode_add_bytes(inode, number);
+ spin_unlock(&inode->i_lock);
+}
+
+static void inode_sub_rsv_space(struct inode *inode, qsize_t number)
+{
+ spin_lock(&inode->i_lock);
+ *inode_reserved_space(inode) -= number;
+ spin_unlock(&inode->i_lock);
+}
+
+static qsize_t inode_get_rsv_space(struct inode *inode)
+{
+ qsize_t ret;
+ spin_lock(&inode->i_lock);
+ ret = *inode_reserved_space(inode);
+ spin_unlock(&inode->i_lock);
+ return ret;
+}
+
+static void inode_incr_space(struct inode *inode, qsize_t number,
+ int reserve)
+{
+ if (reserve)
+ inode_add_rsv_space(inode, number);
+ else
+ inode_add_bytes(inode, number);
+}
+
+static void inode_decr_space(struct inode *inode, qsize_t number, int reserve)
+{
+ if (reserve)
+ inode_sub_rsv_space(inode, number);
+ else
+ inode_sub_bytes(inode, number);
+}
+
+/*
* Following four functions update i_blocks+i_bytes fields and
* quota information (together with appropriate checks)
* NOTE: We absolutely rely on the fact that caller dirties
int cnt, ret = QUOTA_OK;
char warntype[MAXQUOTAS];
+ /*
+ * First test before acquiring mutex - solves deadlocks when we
+ * re-enter the quota code and are already holding the mutex
+ */
+ if (IS_NOQUOTA(inode)) {
+ inode_incr_space(inode, number, reserve);
+ goto out;
+ }
+
+ down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
+ if (IS_NOQUOTA(inode)) {
+ inode_incr_space(inode, number, reserve);
+ goto out_unlock;
+ }
+
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warntype[cnt] = QUOTA_NL_NOWARN;
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
if (check_bdq(inode->i_dquot[cnt], number, warn, warntype+cnt)
== NO_QUOTA) {
ret = NO_QUOTA;
- goto out_unlock;
+ spin_unlock(&dq_data_lock);
+ goto out_flush_warn;
}
}
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
if (reserve)
dquot_resv_space(inode->i_dquot[cnt], number);
else
dquot_incr_space(inode->i_dquot[cnt], number);
}
- if (!reserve)
- inode_add_bytes(inode, number);
-out_unlock:
+ inode_incr_space(inode, number, reserve);
spin_unlock(&dq_data_lock);
+
+ if (reserve)
+ goto out_flush_warn;
+ mark_all_dquot_dirty(inode->i_dquot);
+out_flush_warn:
flush_warnings(inode->i_dquot, warntype);
+out_unlock:
+ up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
+out:
return ret;
}
int dquot_alloc_space(struct inode *inode, qsize_t number, int warn)
{
- int cnt, ret = QUOTA_OK;
-
- /*
- * First test before acquiring mutex - solves deadlocks when we
- * re-enter the quota code and are already holding the mutex
- */
- if (IS_NOQUOTA(inode)) {
- inode_add_bytes(inode, number);
- goto out;
- }
-
- down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
- if (IS_NOQUOTA(inode)) {
- inode_add_bytes(inode, number);
- goto out_unlock;
- }
-
- ret = __dquot_alloc_space(inode, number, warn, 0);
- if (ret == NO_QUOTA)
- goto out_unlock;
-
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt])
- mark_dquot_dirty(inode->i_dquot[cnt]);
-out_unlock:
- up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
- return ret;
+ return __dquot_alloc_space(inode, number, warn, 0);
}
EXPORT_SYMBOL(dquot_alloc_space);
int dquot_reserve_space(struct inode *inode, qsize_t number, int warn)
{
- int ret = QUOTA_OK;
-
- if (IS_NOQUOTA(inode))
- goto out;
-
- down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
- if (IS_NOQUOTA(inode))
- goto out_unlock;
-
- ret = __dquot_alloc_space(inode, number, warn, 1);
-out_unlock:
- up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
- return ret;
+ return __dquot_alloc_space(inode, number, warn, 1);
}
EXPORT_SYMBOL(dquot_reserve_space);
}
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
- if (check_idq(inode->i_dquot[cnt], number, warntype+cnt) == NO_QUOTA)
+ if (check_idq(inode->i_dquot[cnt], number, warntype+cnt)
+ == NO_QUOTA)
goto warn_put_all;
}
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
dquot_incr_inodes(inode->i_dquot[cnt], number);
}
warn_put_all:
spin_unlock(&dq_data_lock);
if (ret == QUOTA_OK)
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt])
- mark_dquot_dirty(inode->i_dquot[cnt]);
+ mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return ret;
int ret = QUOTA_OK;
if (IS_NOQUOTA(inode)) {
- inode_add_bytes(inode, number);
+ inode_claim_rsv_space(inode, number);
goto out;
}
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
if (IS_NOQUOTA(inode)) {
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
- inode_add_bytes(inode, number);
+ inode_claim_rsv_space(inode, number);
goto out;
}
spin_lock(&dq_data_lock);
/* Claim reserved quotas to allocated quotas */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] != NODQUOT)
+ if (inode->i_dquot[cnt])
dquot_claim_reserved_space(inode->i_dquot[cnt],
number);
}
/* Update inode bytes */
- inode_add_bytes(inode, number);
+ inode_claim_rsv_space(inode, number);
spin_unlock(&dq_data_lock);
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt])
- mark_dquot_dirty(inode->i_dquot[cnt]);
+ mark_all_dquot_dirty(inode->i_dquot);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
out:
return ret;
EXPORT_SYMBOL(dquot_claim_space);
/*
- * Release reserved quota space
- */
-void dquot_release_reserved_space(struct inode *inode, qsize_t number)
-{
- int cnt;
-
- if (IS_NOQUOTA(inode))
- goto out;
-
- down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
- if (IS_NOQUOTA(inode))
- goto out_unlock;
-
- spin_lock(&dq_data_lock);
- /* Release reserved dquots */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] != NODQUOT)
- dquot_free_reserved_space(inode->i_dquot[cnt], number);
- }
- spin_unlock(&dq_data_lock);
-
-out_unlock:
- up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
-out:
- return;
-}
-EXPORT_SYMBOL(dquot_release_reserved_space);
-
-/*
* This operation can block, but only after everything is updated
*/
-int dquot_free_space(struct inode *inode, qsize_t number)
+int __dquot_free_space(struct inode *inode, qsize_t number, int reserve)
{
unsigned int cnt;
char warntype[MAXQUOTAS];
* re-enter the quota code and are already holding the mutex */
if (IS_NOQUOTA(inode)) {
out_sub:
- inode_sub_bytes(inode, number);
+ inode_decr_space(inode, number, reserve);
return QUOTA_OK;
}
}
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
warntype[cnt] = info_bdq_free(inode->i_dquot[cnt], number);
- dquot_decr_space(inode->i_dquot[cnt], number);
+ if (reserve)
+ dquot_free_reserved_space(inode->i_dquot[cnt], number);
+ else
+ dquot_decr_space(inode->i_dquot[cnt], number);
}
- inode_sub_bytes(inode, number);
+ inode_decr_space(inode, number, reserve);
spin_unlock(&dq_data_lock);
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt])
- mark_dquot_dirty(inode->i_dquot[cnt]);
+
+ if (reserve)
+ goto out_unlock;
+ mark_all_dquot_dirty(inode->i_dquot);
+out_unlock:
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
}
+
+int dquot_free_space(struct inode *inode, qsize_t number)
+{
+ return __dquot_free_space(inode, number, 0);
+}
EXPORT_SYMBOL(dquot_free_space);
/*
+ * Release reserved quota space
+ */
+void dquot_release_reserved_space(struct inode *inode, qsize_t number)
+{
+ __dquot_free_space(inode, number, 1);
+
+}
+EXPORT_SYMBOL(dquot_release_reserved_space);
+
+/*
* This operation can block, but only after everything is updated
*/
int dquot_free_inode(const struct inode *inode, qsize_t number)
}
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (inode->i_dquot[cnt] == NODQUOT)
+ if (!inode->i_dquot[cnt])
continue;
warntype[cnt] = info_idq_free(inode->i_dquot[cnt], number);
dquot_decr_inodes(inode->i_dquot[cnt], number);
}
spin_unlock(&dq_data_lock);
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- if (inode->i_dquot[cnt])
- mark_dquot_dirty(inode->i_dquot[cnt]);
+ mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
EXPORT_SYMBOL(dquot_free_inode);
/*
- * call back function, get reserved quota space from underlying fs
- */
-qsize_t dquot_get_reserved_space(struct inode *inode)
-{
- qsize_t reserved_space = 0;
-
- if (sb_any_quota_active(inode->i_sb) &&
- inode->i_sb->dq_op->get_reserved_space)
- reserved_space = inode->i_sb->dq_op->get_reserved_space(inode);
- return reserved_space;
-}
-
-/*
* Transfer the number of inode and blocks from one diskquota to an other.
*
* This operation can block, but only after everything is updated
return QUOTA_OK;
/* Initialize the arrays */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- transfer_from[cnt] = NODQUOT;
- transfer_to[cnt] = NODQUOT;
+ transfer_from[cnt] = NULL;
+ transfer_to[cnt] = NULL;
warntype_to[cnt] = QUOTA_NL_NOWARN;
- switch (cnt) {
- case USRQUOTA:
- if (!chuid)
- continue;
- transfer_to[cnt] = dqget(inode->i_sb, iattr->ia_uid, cnt);
- break;
- case GRPQUOTA:
- if (!chgid)
- continue;
- transfer_to[cnt] = dqget(inode->i_sb, iattr->ia_gid, cnt);
- break;
- }
}
+ if (chuid)
+ transfer_to[USRQUOTA] = dqget(inode->i_sb, iattr->ia_uid,
+ USRQUOTA);
+ if (chgid)
+ transfer_to[GRPQUOTA] = dqget(inode->i_sb, iattr->ia_gid,
+ GRPQUOTA);
down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
/* Now recheck reliably when holding dqptr_sem */
}
spin_lock(&dq_data_lock);
cur_space = inode_get_bytes(inode);
- rsv_space = dquot_get_reserved_space(inode);
+ rsv_space = inode_get_rsv_space(inode);
space = cur_space + rsv_space;
/* Build the transfer_from list and check the limits */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (transfer_to[cnt] == NODQUOT)
+ if (!transfer_to[cnt])
continue;
transfer_from[cnt] = inode->i_dquot[cnt];
if (check_idq(transfer_to[cnt], 1, warntype_to + cnt) ==
/*
* Skip changes for same uid or gid or for turned off quota-type.
*/
- if (transfer_to[cnt] == NODQUOT)
+ if (!transfer_to[cnt])
continue;
/* Due to IO error we might not have transfer_from[] structure */
spin_unlock(&dq_data_lock);
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
- /* Dirtify all the dquots - this can block when journalling */
- for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- if (transfer_from[cnt])
- mark_dquot_dirty(transfer_from[cnt]);
- if (transfer_to[cnt]) {
- mark_dquot_dirty(transfer_to[cnt]);
- /* The reference we got is transferred to the inode */
- transfer_to[cnt] = NODQUOT;
- }
- }
+ mark_all_dquot_dirty(transfer_from);
+ mark_all_dquot_dirty(transfer_to);
+ /* The reference we got is transferred to the inode */
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++)
+ transfer_to[cnt] = NULL;
warn_put_all:
flush_warnings(transfer_to, warntype_to);
flush_warnings(transfer_from, warntype_from_inodes);
flush_warnings(transfer_from, warntype_from_space);
put_all:
- for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
- dqput(transfer_from[cnt]);
- dqput(transfer_to[cnt]);
- }
+ dqput_all(transfer_from);
+ dqput_all(transfer_to);
return ret;
over_quota:
spin_unlock(&dq_data_lock);
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
/* Clear dquot pointers we don't want to dqput() */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
- transfer_from[cnt] = NODQUOT;
+ transfer_from[cnt] = NULL;
ret = NO_QUOTA;
goto warn_put_all;
}
/*
* Definitions of diskquota operations.
*/
-struct dquot_operations dquot_operations = {
+const struct dquot_operations dquot_operations = {
.initialize = dquot_initialize,
.drop = dquot_drop,
.alloc_space = dquot_alloc_space,
drop_dquot_ref(sb, cnt);
invalidate_dquots(sb, cnt);
/*
- * Now all dquots should be invalidated, all writes done so we should be only
- * users of the info. No locks needed.
+ * Now all dquots should be invalidated, all writes done so we
+ * should be only users of the info. No locks needed.
*/
if (info_dirty(&dqopt->info[cnt]))
sb->dq_op->write_info(sb, cnt);
/* If quota was reenabled in the meantime, we have
* nothing to do */
if (!sb_has_quota_loaded(sb, cnt)) {
- mutex_lock_nested(&toputinode[cnt]->i_mutex, I_MUTEX_QUOTA);
+ mutex_lock_nested(&toputinode[cnt]->i_mutex,
+ I_MUTEX_QUOTA);
toputinode[cnt]->i_flags &= ~(S_IMMUTABLE |
S_NOATIME | S_NOQUOTA);
- truncate_inode_pages(&toputinode[cnt]->i_data, 0);
+ truncate_inode_pages(&toputinode[cnt]->i_data,
+ 0);
mutex_unlock(&toputinode[cnt]->i_mutex);
mark_inode_dirty(toputinode[cnt]);
}
* changes */
invalidate_bdev(sb->s_bdev);
}
- mutex_lock(&inode->i_mutex);
mutex_lock(&dqopt->dqonoff_mutex);
if (sb_has_quota_loaded(sb, type)) {
error = -EBUSY;
* possible) Also nobody should write to the file - we use
* special IO operations which ignore the immutable bit. */
down_write(&dqopt->dqptr_sem);
- oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE | S_NOQUOTA);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
+ oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE |
+ S_NOQUOTA);
inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
+ mutex_unlock(&inode->i_mutex);
up_write(&dqopt->dqptr_sem);
sb->dq_op->drop(inode);
}
dqopt->info[type].dqi_fmt_id = format_id;
INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list);
mutex_lock(&dqopt->dqio_mutex);
- if ((error = dqopt->ops[type]->read_file_info(sb, type)) < 0) {
+ error = dqopt->ops[type]->read_file_info(sb, type);
+ if (error < 0) {
mutex_unlock(&dqopt->dqio_mutex);
goto out_file_init;
}
mutex_unlock(&dqopt->dqio_mutex);
- mutex_unlock(&inode->i_mutex);
spin_lock(&dq_state_lock);
dqopt->flags |= dquot_state_flag(flags, type);
spin_unlock(&dq_state_lock);
dqopt->files[type] = NULL;
iput(inode);
out_lock:
- mutex_unlock(&dqopt->dqonoff_mutex);
if (oldflags != -1) {
down_write(&dqopt->dqptr_sem);
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
/* Set the flags back (in the case of accidental quotaon()
* on a wrong file we don't want to mess up the flags) */
inode->i_flags &= ~(S_NOATIME | S_NOQUOTA | S_IMMUTABLE);
inode->i_flags |= oldflags;
+ mutex_unlock(&inode->i_mutex);
up_write(&dqopt->dqptr_sem);
}
- mutex_unlock(&inode->i_mutex);
+ mutex_unlock(&dqopt->dqonoff_mutex);
out_fmt:
put_quota_format(fmt);
struct dentry *dentry;
int error;
+ mutex_lock(&sb->s_root->d_inode->i_mutex);
dentry = lookup_one_len(qf_name, sb->s_root, strlen(qf_name));
+ mutex_unlock(&sb->s_root->d_inode->i_mutex);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
spin_unlock(&dq_data_lock);
}
-int vfs_get_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di)
+int vfs_get_dqblk(struct super_block *sb, int type, qid_t id,
+ struct if_dqblk *di)
{
struct dquot *dquot;
dquot = dqget(sb, id, type);
- if (dquot == NODQUOT)
+ if (!dquot)
return -ESRCH;
do_get_dqblk(dquot, di);
dqput(dquot);
}
if (check_blim) {
- if (!dm->dqb_bsoftlimit || dm->dqb_curspace < dm->dqb_bsoftlimit) {
+ if (!dm->dqb_bsoftlimit ||
+ dm->dqb_curspace < dm->dqb_bsoftlimit) {
dm->dqb_btime = 0;
clear_bit(DQ_BLKS_B, &dquot->dq_flags);
- }
- else if (!(di->dqb_valid & QIF_BTIME)) /* Set grace only if user hasn't provided his own... */
+ } else if (!(di->dqb_valid & QIF_BTIME))
+ /* Set grace only if user hasn't provided his own... */
dm->dqb_btime = get_seconds() + dqi->dqi_bgrace;
}
if (check_ilim) {
- if (!dm->dqb_isoftlimit || dm->dqb_curinodes < dm->dqb_isoftlimit) {
+ if (!dm->dqb_isoftlimit ||
+ dm->dqb_curinodes < dm->dqb_isoftlimit) {
dm->dqb_itime = 0;
clear_bit(DQ_INODES_B, &dquot->dq_flags);
- }
- else if (!(di->dqb_valid & QIF_ITIME)) /* Set grace only if user hasn't provided his own... */
+ } else if (!(di->dqb_valid & QIF_ITIME))
+ /* Set grace only if user hasn't provided his own... */
dm->dqb_itime = get_seconds() + dqi->dqi_igrace;
}
- if (dm->dqb_bhardlimit || dm->dqb_bsoftlimit || dm->dqb_ihardlimit || dm->dqb_isoftlimit)
+ if (dm->dqb_bhardlimit || dm->dqb_bsoftlimit || dm->dqb_ihardlimit ||
+ dm->dqb_isoftlimit)
clear_bit(DQ_FAKE_B, &dquot->dq_flags);
else
set_bit(DQ_FAKE_B, &dquot->dq_flags);
return 0;
}
-int vfs_set_dqblk(struct super_block *sb, int type, qid_t id, struct if_dqblk *di)
+int vfs_set_dqblk(struct super_block *sb, int type, qid_t id,
+ struct if_dqblk *di)
{
struct dquot *dquot;
int rc;
if (ii->dqi_valid & IIF_IGRACE)
mi->dqi_igrace = ii->dqi_igrace;
if (ii->dqi_valid & IIF_FLAGS)
- mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) | (ii->dqi_flags & DQF_MASK);
+ mi->dqi_flags = (mi->dqi_flags & ~DQF_MASK) |
+ (ii->dqi_flags & DQF_MASK);
spin_unlock(&dq_data_lock);
mark_info_dirty(sb, type);
/* Force write to disk */
}
EXPORT_SYMBOL(vfs_set_dqinfo);
-struct quotactl_ops vfs_quotactl_ops = {
+const struct quotactl_ops vfs_quotactl_ops = {
.quota_on = vfs_quota_on,
.quota_off = vfs_quota_off,
.quota_sync = vfs_quota_sync,
static ctl_table fs_dqstats_table[] = {
{
- .ctl_name = FS_DQ_LOOKUPS,
.procname = "lookups",
.data = &dqstats.lookups,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_DROPS,
.procname = "drops",
.data = &dqstats.drops,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_READS,
.procname = "reads",
.data = &dqstats.reads,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_WRITES,
.procname = "writes",
.data = &dqstats.writes,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_CACHE_HITS,
.procname = "cache_hits",
.data = &dqstats.cache_hits,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_ALLOCATED,
.procname = "allocated_dquots",
.data = &dqstats.allocated_dquots,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_FREE,
.procname = "free_dquots",
.data = &dqstats.free_dquots,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
{
- .ctl_name = FS_DQ_SYNCS,
.procname = "syncs",
.data = &dqstats.syncs,
.maxlen = sizeof(int),
.mode = 0444,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#ifdef CONFIG_PRINT_QUOTA_WARNING
{
- .ctl_name = FS_DQ_WARNINGS,
.procname = "warnings",
.data = &flag_print_warnings,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = &proc_dointvec,
+ .proc_handler = proc_dointvec,
},
#endif
- { .ctl_name = 0 },
+ { },
};
static ctl_table fs_table[] = {
{
- .ctl_name = FS_DQSTATS,
.procname = "quota",
.mode = 0555,
.child = fs_dqstats_table,
},
- { .ctl_name = 0 },
+ { },
};
static ctl_table sys_table[] = {
{
- .ctl_name = CTL_FS,
.procname = "fs",
.mode = 0555,
.child = fs_table,
},
- { .ctl_name = 0 },
+ { },
};
static int __init dquot_init(void)
register_shrinker(&dqcache_shrinker);
-#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
- if (genl_register_family("a_genl_family) != 0)
- printk(KERN_ERR "VFS: Failed to create quota netlink interface.\n");
-#endif
-
return 0;
}
module_init(dquot_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff