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quota: Coding style fixes

Browse source 
Wrap long lines, remove assignments from conditions, rewrite two
overcomplicated for loops.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2009-01-27 15:47:22 +01:00
parent 7a2435d874
commit 268157ba67
5 changed files with 198 additions and 111 deletions
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181
fs/quota/dquot.c
View file

@ -156,7 +156,9 @@ void unregister_quota_format(struct quota_format_type *fmt)
struct quota_format_type **actqf;
spin_lock(&dq_list_lock);
for (actqf = &quota_formats; *actqf && *actqf != fmt; actqf = &(*actqf)->qf_next);
for (actqf = &quota_formats; *actqf && *actqf != fmt;
actqf = &(*actqf)->qf_next)
;
if (*actqf)
*actqf = (*actqf)->qf_next;
spin_unlock(&dq_list_lock);
@ -168,18 +170,25 @@ static struct quota_format_type *find_quota_format(int id)
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;
}
@ -234,7 +243,8 @@ hashfn(const struct super_block *sb, unsigned int id, int type)
*/
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);
}
@ -251,7 +261,8 @@ static struct dquot *find_dquot(unsigned int hashent, struct super_block *sb,
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 NULL;
@ -351,8 +362,10 @@ int dquot_acquire(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) {
@ -387,8 +400,10 @@ int dquot_commit(struct dquot *dquot)
* => 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;
}
@ -414,8 +429,10 @@ int dquot_release(struct dquot *dquot)
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;
}
@ -543,7 +560,8 @@ int vfs_quota_sync(struct super_block *sb, int type)
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);
@ -763,11 +781,12 @@ we_slept:
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 = NULL;
goto out;
@ -828,7 +847,10 @@ static void add_dquot_ref(struct super_block *sb, int type)
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)
@ -836,8 +858,11 @@ static inline int dqput_blocks(struct dquot *dquot)
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)
{
@ -851,7 +876,9 @@ static int remove_inode_dquot_ref(struct inode *inode, int type,
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;
}
@ -861,19 +888,22 @@ static int remove_inode_dquot_ref(struct inode *inode, int type,
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);
}
}
@ -1131,37 +1161,42 @@ 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;
@ -1171,9 +1206,10 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
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;
@ -1190,7 +1226,8 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
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;
@ -1202,7 +1239,8 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
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
/*
@ -1217,15 +1255,18 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
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;
}
@ -1466,7 +1507,8 @@ int dquot_alloc_inode(const struct inode *inode, qsize_t number)
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
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;
}
@ -1673,19 +1715,13 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
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 */
@ -1881,8 +1917,8 @@ int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
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);
@ -1920,10 +1956,12 @@ int vfs_quota_disable(struct super_block *sb, int type, unsigned int flags)
/* 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]);
}
@ -2013,7 +2051,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
* 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);
oldflags = inode->i_flags & (S_NOATIME | S_IMMUTABLE |
S_NOQUOTA);
inode->i_flags |= S_NOQUOTA | S_NOATIME | S_IMMUTABLE;
up_write(&dqopt->dqptr_sem);
sb->dq_op->drop(inode);
@ -2032,7 +2071,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
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;
}
@ -2254,7 +2294,8 @@ static void do_get_dqblk(struct dquot *dquot, struct if_dqblk *di)
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;
@ -2318,22 +2359,25 @@ static int do_set_dqblk(struct dquot *dquot, struct if_dqblk *di)
}
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);
@ -2343,7 +2387,8 @@ static int do_set_dqblk(struct dquot *dquot, struct if_dqblk *di)
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;
@ -2400,7 +2445,8 @@ int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii)
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 */
@ -2559,7 +2605,8 @@ static int __init dquot_init(void)
#ifdef CONFIG_QUOTA_NETLINK_INTERFACE
if (genl_register_family(&quota_genl_family) != 0)
printk(KERN_ERR "VFS: Failed to create quota netlink interface.\n");
printk(KERN_ERR
"VFS: Failed to create quota netlink interface.\n");
#endif
return 0;

35
fs/quota/quota.c
View file

@ -20,7 +20,8 @@
#include <linux/types.h>
/* Check validity of generic quotactl commands */
static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
static int generic_quotactl_valid(struct super_block *sb, int type, int cmd,
qid_t id)
{
if (type >= MAXQUOTAS)
return -EINVAL;
@ -72,7 +73,8 @@ static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid
case Q_SETINFO:
case Q_SETQUOTA:
case Q_GETQUOTA:
/* This is just informative test so we are satisfied without a lock */
/* This is just an informative test so we are satisfied
* without the lock */
if (!sb_has_quota_active(sb, type))
return -ESRCH;
}
@ -92,7 +94,8 @@ static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid
}
/* Check validity of XFS Quota Manager commands */
static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd,
qid_t id)
{
if (type >= XQM_MAXQUOTAS)
return -EINVAL;
@ -142,7 +145,8 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i
return 0;
}
static int check_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
static int check_quotactl_valid(struct super_block *sb, int type, int cmd,
qid_t id)
{
int error;
@ -180,7 +184,8 @@ static void quota_sync_sb(struct super_block *sb, int type)
continue;
if (!sb_has_quota_active(sb, cnt))
continue;
mutex_lock_nested(&sb_dqopt(sb)->files[cnt]->i_mutex, I_MUTEX_QUOTA);
mutex_lock_nested(&sb_dqopt(sb)->files[cnt]->i_mutex,
I_MUTEX_QUOTA);
truncate_inode_pages(&sb_dqopt(sb)->files[cnt]->i_data, 0);
mutex_unlock(&sb_dqopt(sb)->files[cnt]->i_mutex);
}
@ -200,14 +205,15 @@ void sync_dquots(struct super_block *sb, int type)
spin_lock(&sb_lock);
restart:
list_for_each_entry(sb, &super_blocks, s_list) {
/* This test just improves performance so it needn't be reliable... */
/* This test just improves performance so it needn't be
* reliable... */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (type != -1 && type != cnt)
continue;
if (!sb_has_quota_active(sb, cnt))
continue;
if (!info_dirty(&sb_dqopt(sb)->info[cnt]) &&
list_empty(&sb_dqopt(sb)->info[cnt].dqi_dirty_list))
list_empty(&sb_dqopt(sb)->info[cnt].dqi_dirty_list))
continue;
break;
}
@ -227,7 +233,8 @@ restart:
}
/* Copy parameters and call proper function */
static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void __user *addr)
static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
void __user *addr)
{
int ret;
@ -235,7 +242,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
case Q_QUOTAON: {
char *pathname;
if (IS_ERR(pathname = getname(addr)))
pathname = getname(addr);
if (IS_ERR(pathname))
return PTR_ERR(pathname);
ret = sb->s_qcop->quota_on(sb, type, id, pathname, 0);
putname(pathname);
@ -261,7 +269,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
case Q_GETINFO: {
struct if_dqinfo info;
if ((ret = sb->s_qcop->get_info(sb, type, &info)))
ret = sb->s_qcop->get_info(sb, type, &info);
if (ret)
return ret;
if (copy_to_user(addr, &info, sizeof(info)))
return -EFAULT;
@ -277,7 +286,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
case Q_GETQUOTA: {
struct if_dqblk idq;
if ((ret = sb->s_qcop->get_dqblk(sb, type, id, &idq)))
ret = sb->s_qcop->get_dqblk(sb, type, id, &idq);
if (ret)
return ret;
if (copy_to_user(addr, &idq, sizeof(idq)))
return -EFAULT;
@ -322,7 +332,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
case Q_XGETQUOTA: {
struct fs_disk_quota fdq;
if ((ret = sb->s_qcop->get_xquota(sb, type, id, &fdq)))
ret = sb->s_qcop->get_xquota(sb, type, id, &fdq);
if (ret)
return ret;
if (copy_to_user(addr, &fdq, sizeof(fdq)))
return -EFAULT;

42
fs/quota/quota_tree.c
View file

@ -43,7 +43,8 @@ static char *getdqbuf(size_t size)
{
char *buf = kmalloc(size, GFP_NOFS);
if (!buf)
printk(KERN_WARNING "VFS: Not enough memory for quota buffers.\n");
printk(KERN_WARNING
"VFS: Not enough memory for quota buffers.\n");
return buf;
}
@ -113,7 +114,8 @@ static int put_free_dqblk(struct qtree_mem_dqinfo *info, char *buf, uint blk)
}
/* Remove given block from the list of blocks with free entries */
static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf, uint blk)
static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
uint blk)
{
char *tmpbuf = getdqbuf(info->dqi_usable_bs);
struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
@ -150,7 +152,9 @@ static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf, uint bl
dh->dqdh_next_free = dh->dqdh_prev_free = cpu_to_le32(0);
/* No matter whether write succeeds block is out of list */
if (write_blk(info, blk, buf) < 0)
printk(KERN_ERR "VFS: Can't write block (%u) with free entries.\n", blk);
printk(KERN_ERR
"VFS: Can't write block (%u) with free entries.\n",
blk);
return 0;
out_buf:
kfree(tmpbuf);
@ -158,7 +162,8 @@ out_buf:
}
/* Insert given block to the beginning of list with free entries */
static int insert_free_dqentry(struct qtree_mem_dqinfo *info, char *buf, uint blk)
static int insert_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
uint blk)
{
char *tmpbuf = getdqbuf(info->dqi_usable_bs);
struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
@ -230,7 +235,8 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
return 0;
}
memset(buf, 0, info->dqi_usable_bs);
/* This is enough as block is already zeroed and entry list is empty... */
/* This is enough as the block is already zeroed and the entry
* list is empty... */
info->dqi_free_entry = blk;
mark_info_dirty(dquot->dq_sb, dquot->dq_type);
}
@ -246,10 +252,12 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
}
le16_add_cpu(&dh->dqdh_entries, 1);
/* Find free structure in block */
for (i = 0, ddquot = buf + sizeof(struct qt_disk_dqdbheader);
i < qtree_dqstr_in_blk(info) && !qtree_entry_unused(info, ddquot);
i++, ddquot += info->dqi_entry_size)
;
ddquot = buf + sizeof(struct qt_disk_dqdbheader);
for (i = 0; i < qtree_dqstr_in_blk(info); i++) {
if (qtree_entry_unused(info, ddquot))
break;
ddquot += info->dqi_entry_size;
}
#ifdef __QUOTA_QT_PARANOIA
if (i == qtree_dqstr_in_blk(info)) {
printk(KERN_ERR "VFS: find_free_dqentry(): Data block full "
@ -340,7 +348,8 @@ static inline int dq_insert_tree(struct qtree_mem_dqinfo *info,
}
/*
* We don't have to be afraid of deadlocks as we never have quotas on quota files...
* We don't have to be afraid of deadlocks as we never have quotas on quota
* files...
*/
int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
{
@ -515,10 +524,12 @@ static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
printk(KERN_ERR "VFS: Can't read quota tree block %u.\n", blk);
goto out_buf;
}
for (i = 0, ddquot = buf + sizeof(struct qt_disk_dqdbheader);
i < qtree_dqstr_in_blk(info) && !info->dqi_ops->is_id(ddquot, dquot);
i++, ddquot += info->dqi_entry_size)
;
ddquot = buf + sizeof(struct qt_disk_dqdbheader);
for (i = 0; i < qtree_dqstr_in_blk(info); i++) {
if (info->dqi_ops->is_id(ddquot, dquot))
break;
ddquot += info->dqi_entry_size;
}
if (i == qtree_dqstr_in_blk(info)) {
printk(KERN_ERR "VFS: Quota for id %u referenced "
"but not present.\n", dquot->dq_id);
@ -632,7 +643,8 @@ EXPORT_SYMBOL(qtree_read_dquot);
* the only one operating on dquot (thanks to dq_lock) */
int qtree_release_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
{
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) && !(dquot->dq_dqb.dqb_curinodes | dquot->dq_dqb.dqb_curspace))
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) &&
!(dquot->dq_dqb.dqb_curinodes | dquot->dq_dqb.dqb_curspace))
return qtree_delete_dquot(info, dquot);
return 0;
}

48
fs/quota/quota_v1.c
View file

@ -62,11 +62,14 @@ static int v1_read_dqblk(struct dquot *dquot)
/* Set structure to 0s in case read fails/is after end of file */
memset(&dqblk, 0, sizeof(struct v1_disk_dqblk));
dquot->dq_sb->s_op->quota_read(dquot->dq_sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(dquot->dq_id));
dquot->dq_sb->s_op->quota_read(dquot->dq_sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(dquot->dq_id));
v1_disk2mem_dqblk(&dquot->dq_dqb, &dqblk);
if (dquot->dq_dqb.dqb_bhardlimit == 0 && dquot->dq_dqb.dqb_bsoftlimit == 0 &&
dquot->dq_dqb.dqb_ihardlimit == 0 && dquot->dq_dqb.dqb_isoftlimit == 0)
if (dquot->dq_dqb.dqb_bhardlimit == 0 &&
dquot->dq_dqb.dqb_bsoftlimit == 0 &&
dquot->dq_dqb.dqb_ihardlimit == 0 &&
dquot->dq_dqb.dqb_isoftlimit == 0)
set_bit(DQ_FAKE_B, &dquot->dq_flags);
dqstats.reads++;
@ -81,13 +84,16 @@ static int v1_commit_dqblk(struct dquot *dquot)
v1_mem2disk_dqblk(&dqblk, &dquot->dq_dqb);
if (dquot->dq_id == 0) {
dqblk.dqb_btime = sb_dqopt(dquot->dq_sb)->info[type].dqi_bgrace;
dqblk.dqb_itime = sb_dqopt(dquot->dq_sb)->info[type].dqi_igrace;
dqblk.dqb_btime =
sb_dqopt(dquot->dq_sb)->info[type].dqi_bgrace;
dqblk.dqb_itime =
sb_dqopt(dquot->dq_sb)->info[type].dqi_igrace;
}
ret = 0;
if (sb_dqopt(dquot->dq_sb)->files[type])
ret = dquot->dq_sb->s_op->quota_write(dquot->dq_sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(dquot->dq_id));
ret = dquot->dq_sb->s_op->quota_write(dquot->dq_sb, type,
(char *)&dqblk, sizeof(struct v1_disk_dqblk),
v1_dqoff(dquot->dq_id));
if (ret != sizeof(struct v1_disk_dqblk)) {
printk(KERN_WARNING "VFS: dquota write failed on dev %s\n",
dquot->dq_sb->s_id);
@ -130,15 +136,20 @@ static int v1_check_quota_file(struct super_block *sb, int type)
return 0;
blocks = isize >> BLOCK_SIZE_BITS;
off = isize & (BLOCK_SIZE - 1);
if ((blocks % sizeof(struct v1_disk_dqblk) * BLOCK_SIZE + off) % sizeof(struct v1_disk_dqblk))
if ((blocks % sizeof(struct v1_disk_dqblk) * BLOCK_SIZE + off) %
sizeof(struct v1_disk_dqblk))
return 0;
/* Doublecheck whether we didn't get file with new format - with old quotactl() this could happen */
size = sb->s_op->quota_read(sb, type, (char *)&dqhead, sizeof(struct v2_disk_dqheader), 0);
/* Doublecheck whether we didn't get file with new format - with old
* quotactl() this could happen */
size = sb->s_op->quota_read(sb, type, (char *)&dqhead,
sizeof(struct v2_disk_dqheader), 0);
if (size != sizeof(struct v2_disk_dqheader))
return 1; /* Probably not new format */
if (le32_to_cpu(dqhead.dqh_magic) != quota_magics[type])
return 1; /* Definitely not new format */
printk(KERN_INFO "VFS: %s: Refusing to turn on old quota format on given file. It probably contains newer quota format.\n", sb->s_id);
printk(KERN_INFO
"VFS: %s: Refusing to turn on old quota format on given file."
" It probably contains newer quota format.\n", sb->s_id);
return 0; /* Seems like a new format file -> refuse it */
}
@ -148,7 +159,9 @@ static int v1_read_file_info(struct super_block *sb, int type)
struct v1_disk_dqblk dqblk;
int ret;
if ((ret = sb->s_op->quota_read(sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(0))) != sizeof(struct v1_disk_dqblk)) {
ret = sb->s_op->quota_read(sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(0));
if (ret != sizeof(struct v1_disk_dqblk)) {
if (ret >= 0)
ret = -EIO;
goto out;
@ -157,8 +170,10 @@ static int v1_read_file_info(struct super_block *sb, int type)
/* limits are stored as unsigned 32-bit data */
dqopt->info[type].dqi_maxblimit = 0xffffffff;
dqopt->info[type].dqi_maxilimit = 0xffffffff;
dqopt->info[type].dqi_igrace = dqblk.dqb_itime ? dqblk.dqb_itime : MAX_IQ_TIME;
dqopt->info[type].dqi_bgrace = dqblk.dqb_btime ? dqblk.dqb_btime : MAX_DQ_TIME;
dqopt->info[type].dqi_igrace =
dqblk.dqb_itime ? dqblk.dqb_itime : MAX_IQ_TIME;
dqopt->info[type].dqi_bgrace =
dqblk.dqb_btime ? dqblk.dqb_btime : MAX_DQ_TIME;
out:
return ret;
}
@ -170,8 +185,9 @@ static int v1_write_file_info(struct super_block *sb, int type)
int ret;
dqopt->info[type].dqi_flags &= ~DQF_INFO_DIRTY;
if ((ret = sb->s_op->quota_read(sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(0))) != sizeof(struct v1_disk_dqblk)) {
ret = sb->s_op->quota_read(sb, type, (char *)&dqblk,
sizeof(struct v1_disk_dqblk), v1_dqoff(0));
if (ret != sizeof(struct v1_disk_dqblk)) {
if (ret >= 0)
ret = -EIO;
goto out;

3
fs/quota/quota_v2.c
View file

@ -54,7 +54,8 @@ static int v2_check_quota_file(struct super_block *sb, int type)
static const uint quota_magics[] = V2_INITQMAGICS;
static const uint quota_versions[] = V2_INITQVERSIONS;
size = sb->s_op->quota_read(sb, type, (char *)&dqhead, sizeof(struct v2_disk_dqheader), 0);
size = sb->s_op->quota_read(sb, type, (char *)&dqhead,
sizeof(struct v2_disk_dqheader), 0);
if (size != sizeof(struct v2_disk_dqheader)) {
printk("quota_v2: failed read expected=%zd got=%zd\n",
sizeof(struct v2_disk_dqheader), size);