Jel to dobijas pri kompajliranju ili iz dmesg-a pri boot-ovanju ili je u pitanju critical error?
Code:
/*
* Claim reserved quota space
*/
static void dquot_claim_reserved_space(struct dquot *dquot,
qsize_t number)
{
WARN_ON(dquot->dq_dqb.dqb_rsvspace < number);
dquot->dq_dqb.dqb_curspace += number;
dquot->dq_dqb.dqb_rsvspace -= number;
}
Ovo je funkcija zaduzena za taj warning... Proverava da li ima dovoljno prostora na disku koliko je rezervisano za quota-u i reservise je...
Jel mozes da nam objasnis pod kakvim uslovima i tacno kada ti se javlja upozorenje?
Pratio sam malo dalje ovo:
Code:
/*
* This operation can block, but only after everything is updated
*/
int dquot_free_space(struct inode *inode, qsize_t number)
{
unsigned int cnt;
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)) {
out_sub:
inode_sub_bytes(inode, number);
return QUOTA_OK;
}
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
/* Now recheck reliably when holding dqptr_sem */
if (IS_NOQUOTA(inode)) {
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
goto out_sub;
}
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
continue;
warntype[cnt] = info_bdq_free(inode->i_dquot[cnt], number);
dquot_decr_space(inode->i_dquot[cnt], number);
}
inode_sub_bytes(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]);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
}
EXPORT_SYMBOL(dquot_free_space);
/*
* This operation can block, but only after everything is updated
*/
int dquot_free_inode(const struct inode *inode, qsize_t number)
{
unsigned int cnt;
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))
return QUOTA_OK;
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
/* Now recheck reliably when holding dqptr_sem */
if (IS_NOQUOTA(inode)) {
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
}
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
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]);
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
return QUOTA_OK;
}
EXPORT_SYMBOL(dquot_free_inode);
Hm, i sad nemam pojma da li je problem pri rezervisanju prostora definisane quota-om ili pri oslobadjanju quote prostora. kako kazu u komentarima ako tada filesystem obavlja journaling moze doci do blokiranja...
[Ovu poruku je menjao combuster dana 21.06.2009. u 23:11 GMT+1]
make love - !war
Re: Izasao 2.6.30 kernel
