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quota: Store maximum space limit in bytes

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Currently maximum space limit quota format supports is in blocks however
since we store space limits in bytes, this is somewhat confusing. So
store the maximum limit in bytes as well. Also rename the field to match
the new unit and related inode field to match the new naming scheme.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2014-10-09 16:54:13 +02:00
parent aaa3daed15
commit b10a08194c
5 changed files with 15 additions and 25 deletions
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4
fs/ocfs2/quota_local.c
View File

@ -701,8 +701,8 @@ static int ocfs2_local_read_info(struct super_block *sb, int type)
/* 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_maxblimit = 0x7fffffffffffffffLL;
info->dqi_maxilimit = 0x7fffffffffffffffLL;
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"

18
fs/quota/dquot.c
View File

@ -2465,16 +2465,6 @@ out_err:
return ret;
}
static inline qsize_t qbtos(qsize_t blocks)
{
return blocks << QIF_DQBLKSIZE_BITS;
}
static inline qsize_t stoqb(qsize_t space)
{
return (space + QIF_DQBLKSIZE - 1) >> QIF_DQBLKSIZE_BITS;
}
/* Generic routine for getting common part of quota structure */
static void do_get_dqblk(struct dquot *dquot, struct qc_dqblk *di)
{
@ -2524,13 +2514,13 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di)
return -EINVAL;
if (((di->d_fieldmask & QC_SPC_SOFT) &&
stoqb(di->d_spc_softlimit) > dqi->dqi_maxblimit) ||
di->d_spc_softlimit > dqi->dqi_max_spc_limit) ||
((di->d_fieldmask & QC_SPC_HARD) &&
stoqb(di->d_spc_hardlimit) > dqi->dqi_maxblimit) ||
di->d_spc_hardlimit > dqi->dqi_max_spc_limit) ||
((di->d_fieldmask & QC_INO_SOFT) &&
(di->d_ino_softlimit > dqi->dqi_maxilimit)) ||
(di->d_ino_softlimit > dqi->dqi_max_ino_limit)) ||
((di->d_fieldmask & QC_INO_HARD) &&
(di->d_ino_hardlimit > dqi->dqi_maxilimit)))
(di->d_ino_hardlimit > dqi->dqi_max_ino_limit)))
return -ERANGE;
spin_lock(&dq_data_lock);

4
fs/quota/quota_v1.c
View File

@ -169,8 +169,8 @@ static int v1_read_file_info(struct super_block *sb, int type)
}
ret = 0;
/* limits are stored as unsigned 32-bit data */
dqopt->info[type].dqi_maxblimit = 0xffffffff;
dqopt->info[type].dqi_maxilimit = 0xffffffff;
dqopt->info[type].dqi_max_spc_limit = 0xffffffffULL << QUOTABLOCK_BITS;
dqopt->info[type].dqi_max_ino_limit = 0xffffffff;
dqopt->info[type].dqi_igrace =
dqblk.dqb_itime ? dqblk.dqb_itime : MAX_IQ_TIME;
dqopt->info[type].dqi_bgrace =

10
fs/quota/quota_v2.c
View File

@ -117,12 +117,12 @@ static int v2_read_file_info(struct super_block *sb, int type)
qinfo = info->dqi_priv;
if (version == 0) {
/* limits are stored as unsigned 32-bit data */
info->dqi_maxblimit = 0xffffffff;
info->dqi_maxilimit = 0xffffffff;
info->dqi_max_spc_limit = 0xffffffffULL << QUOTABLOCK_BITS;
info->dqi_max_ino_limit = 0xffffffff;
} else {
/* used space is stored as unsigned 64-bit value */
info->dqi_maxblimit = 0xffffffffffffffffULL; /* 2^64-1 */
info->dqi_maxilimit = 0xffffffffffffffffULL;
/* used space is stored as unsigned 64-bit value in bytes */
info->dqi_max_spc_limit = 0xffffffffffffffffULL; /* 2^64-1 */
info->dqi_max_ino_limit = 0xffffffffffffffffULL;
}
info->dqi_bgrace = le32_to_cpu(dinfo.dqi_bgrace);
info->dqi_igrace = le32_to_cpu(dinfo.dqi_igrace);

4
include/linux/quota.h
View File

@ -216,8 +216,8 @@ struct mem_dqinfo {
unsigned long dqi_flags;
unsigned int dqi_bgrace;
unsigned int dqi_igrace;
qsize_t dqi_maxblimit;
qsize_t dqi_maxilimit;
qsize_t dqi_max_spc_limit;
qsize_t dqi_max_ino_limit;
void *dqi_priv;
};