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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Browse Source 
Pull ext3, UDF, and quota fixes from Jan Kara:
 "A couple of ext3 & UDF fixes and also one improvement in quota
  locking."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext3: fix start and len arguments handling in ext3_trim_fs()
  udf: Fix deadlock in udf_release_file()
  udf: Fix file entry logicalBlocksRecorded
  udf: Fix handling of i_blocks
  quota: Make quota code not call tty layer with dqptr_sem held
  udf: Init/maintain file entry checkpoint field
  ext3: Update ctime in ext3_splice_branch() only when needed
  ext3: Don't call dquot_free_block() if we don't update anything
  udf: Remove unnecessary OOM messages
This commit is contained in:
Linus Torvalds
2012-03-28 10:00:14 -07:00
parent e9c0f1529c e703c20613
commit 9a7259d5c8
8 changed files with 226 additions and 167 deletions
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189
fs/quota/dquot.c
View File

@@ -1110,6 +1110,13 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number)
clear_bit(DQ_BLKS_B, &dquot->dq_flags);
}
struct dquot_warn {
struct super_block *w_sb;
qid_t w_dq_id;
short w_dq_type;
short w_type;
};
static int warning_issued(struct dquot *dquot, const int warntype)
{
int flag = (warntype == QUOTA_NL_BHARDWARN ||
@@ -1125,41 +1132,42 @@ static int warning_issued(struct dquot *dquot, const int warntype)
#ifdef CONFIG_PRINT_QUOTA_WARNING
static int flag_print_warnings = 1;
static int need_print_warning(struct dquot *dquot)
static int need_print_warning(struct dquot_warn *warn)
{
if (!flag_print_warnings)
return 0;
switch (dquot->dq_type) {
switch (warn->w_dq_type) {
case USRQUOTA:
return current_fsuid() == dquot->dq_id;
return current_fsuid() == warn->w_dq_id;
case GRPQUOTA:
return in_group_p(dquot->dq_id);
return in_group_p(warn->w_dq_id);
}
return 0;
}
/* Print warning to user which exceeded quota */
static void print_warning(struct dquot *dquot, const int warntype)
static void print_warning(struct dquot_warn *warn)
{
char *msg = NULL;
struct tty_struct *tty;
int warntype = warn->w_type;
if (warntype == QUOTA_NL_IHARDBELOW ||
warntype == QUOTA_NL_ISOFTBELOW ||
warntype == QUOTA_NL_BHARDBELOW ||
warntype == QUOTA_NL_BSOFTBELOW || !need_print_warning(dquot))
warntype == QUOTA_NL_BSOFTBELOW || !need_print_warning(warn))
return;
tty = get_current_tty();
if (!tty)
return;
tty_write_message(tty, dquot->dq_sb->s_id);
tty_write_message(tty, warn->w_sb->s_id);
if (warntype == QUOTA_NL_ISOFTWARN || warntype == QUOTA_NL_BSOFTWARN)
tty_write_message(tty, ": warning, ");
else
tty_write_message(tty, ": write failed, ");
tty_write_message(tty, quotatypes[dquot->dq_type]);
tty_write_message(tty, quotatypes[warn->w_dq_type]);
switch (warntype) {
case QUOTA_NL_IHARDWARN:
msg = " file limit reached.\r\n";
@@ -1185,26 +1193,34 @@ static void print_warning(struct dquot *dquot, const int warntype)
}
#endif
static void prepare_warning(struct dquot_warn *warn, struct dquot *dquot,
int warntype)
{
if (warning_issued(dquot, warntype))
return;
warn->w_type = warntype;
warn->w_sb = dquot->dq_sb;
warn->w_dq_id = dquot->dq_id;
warn->w_dq_type = dquot->dq_type;
}
/*
* Write warnings to the console and send warning messages over netlink.
*
* Note that this function can sleep.
* Note that this function can call into tty and networking code.
*/
static void flush_warnings(struct dquot *const *dquots, char *warntype)
static void flush_warnings(struct dquot_warn *warn)
{
struct dquot *dq;
int i;
for (i = 0; i < MAXQUOTAS; i++) {
dq = dquots[i];
if (dq && warntype[i] != QUOTA_NL_NOWARN &&
!warning_issued(dq, warntype[i])) {
if (warn[i].w_type == QUOTA_NL_NOWARN)
continue;
#ifdef CONFIG_PRINT_QUOTA_WARNING
print_warning(dq, warntype[i]);
print_warning(&warn[i]);
#endif
quota_send_warning(dq->dq_type, dq->dq_id,
dq->dq_sb->s_dev, warntype[i]);
}
quota_send_warning(warn[i].w_dq_type, warn[i].w_dq_id,
warn[i].w_sb->s_dev, warn[i].w_type);
}
}
@@ -1218,11 +1234,11 @@ static int ignore_hardlimit(struct dquot *dquot)
}
/* needs dq_data_lock */
static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
static int check_idq(struct dquot *dquot, qsize_t inodes,
struct dquot_warn *warn)
{
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 0;
@@ -1230,7 +1246,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
if (dquot->dq_dqb.dqb_ihardlimit &&
newinodes > dquot->dq_dqb.dqb_ihardlimit &&
!ignore_hardlimit(dquot)) {
*warntype = QUOTA_NL_IHARDWARN;
prepare_warning(warn, dquot, QUOTA_NL_IHARDWARN);
return -EDQUOT;
}
@@ -1239,14 +1255,14 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
dquot->dq_dqb.dqb_itime &&
get_seconds() >= dquot->dq_dqb.dqb_itime &&
!ignore_hardlimit(dquot)) {
*warntype = QUOTA_NL_ISOFTLONGWARN;
prepare_warning(warn, dquot, QUOTA_NL_ISOFTLONGWARN);
return -EDQUOT;
}
if (dquot->dq_dqb.dqb_isoftlimit &&
newinodes > dquot->dq_dqb.dqb_isoftlimit &&
dquot->dq_dqb.dqb_itime == 0) {
*warntype = QUOTA_NL_ISOFTWARN;
prepare_warning(warn, dquot, QUOTA_NL_ISOFTWARN);
dquot->dq_dqb.dqb_itime = get_seconds() +
sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace;
}
@@ -1255,12 +1271,12 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, char *warntype)
}
/* needs dq_data_lock */
static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *warntype)
static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc,
struct dquot_warn *warn)
{
qsize_t tspace;
struct super_block *sb = dquot->dq_sb;
*warntype = QUOTA_NL_NOWARN;
if (!sb_has_quota_limits_enabled(sb, dquot->dq_type) ||
test_bit(DQ_FAKE_B, &dquot->dq_flags))
return 0;
@@ -1272,7 +1288,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
tspace > dquot->dq_dqb.dqb_bhardlimit &&
!ignore_hardlimit(dquot)) {
if (!prealloc)
*warntype = QUOTA_NL_BHARDWARN;
prepare_warning(warn, dquot, QUOTA_NL_BHARDWARN);
return -EDQUOT;
}
@@ -1282,7 +1298,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
get_seconds() >= dquot->dq_dqb.dqb_btime &&
!ignore_hardlimit(dquot)) {
if (!prealloc)
*warntype = QUOTA_NL_BSOFTLONGWARN;
prepare_warning(warn, dquot, QUOTA_NL_BSOFTLONGWARN);
return -EDQUOT;
}
@@ -1290,7 +1306,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, char *war
tspace > dquot->dq_dqb.dqb_bsoftlimit &&
dquot->dq_dqb.dqb_btime == 0) {
if (!prealloc) {
*warntype = QUOTA_NL_BSOFTWARN;
prepare_warning(warn, dquot, QUOTA_NL_BSOFTWARN);
dquot->dq_dqb.dqb_btime = get_seconds() +
sb_dqopt(sb)->info[dquot->dq_type].dqi_bgrace;
}
@@ -1543,10 +1559,9 @@ static void inode_decr_space(struct inode *inode, qsize_t number, int reserve)
int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
{
int cnt, ret = 0;
char warntype[MAXQUOTAS];
int warn = flags & DQUOT_SPACE_WARN;
struct dquot_warn warn[MAXQUOTAS];
struct dquot **dquots = inode->i_dquot;
int reserve = flags & DQUOT_SPACE_RESERVE;
int nofail = flags & DQUOT_SPACE_NOFAIL;
/*
* First test before acquiring mutex - solves deadlocks when we
@@ -1559,36 +1574,36 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warntype[cnt] = QUOTA_NL_NOWARN;
warn[cnt].w_type = QUOTA_NL_NOWARN;
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
if (!dquots[cnt])
continue;
ret = check_bdq(inode->i_dquot[cnt], number, !warn,
warntype+cnt);
if (ret && !nofail) {
ret = check_bdq(dquots[cnt], number,
!(flags & DQUOT_SPACE_WARN), &warn[cnt]);
if (ret && !(flags & DQUOT_SPACE_NOFAIL)) {
spin_unlock(&dq_data_lock);
goto out_flush_warn;
}
}
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
if (!dquots[cnt])
continue;
if (reserve)
dquot_resv_space(inode->i_dquot[cnt], number);
dquot_resv_space(dquots[cnt], number);
else
dquot_incr_space(inode->i_dquot[cnt], number);
dquot_incr_space(dquots[cnt], number);
}
inode_incr_space(inode, number, reserve);
spin_unlock(&dq_data_lock);
if (reserve)
goto out_flush_warn;
mark_all_dquot_dirty(inode->i_dquot);
mark_all_dquot_dirty(dquots);
out_flush_warn:
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
flush_warnings(warn);
out:
return ret;
}
@@ -1600,36 +1615,37 @@ EXPORT_SYMBOL(__dquot_alloc_space);
int dquot_alloc_inode(const struct inode *inode)
{
int cnt, ret = 0;
char warntype[MAXQUOTAS];
struct dquot_warn warn[MAXQUOTAS];
struct dquot * const *dquots = inode->i_dquot;
/* First test before acquiring mutex - solves deadlocks when we
* re-enter the quota code and are already holding the mutex */
if (!dquot_active(inode))
return 0;
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warntype[cnt] = QUOTA_NL_NOWARN;
warn[cnt].w_type = QUOTA_NL_NOWARN;
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
if (!dquots[cnt])
continue;
ret = check_idq(inode->i_dquot[cnt], 1, warntype + cnt);
ret = check_idq(dquots[cnt], 1, &warn[cnt]);
if (ret)
goto warn_put_all;
}
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
if (!dquots[cnt])
continue;
dquot_incr_inodes(inode->i_dquot[cnt], 1);
dquot_incr_inodes(dquots[cnt], 1);
}
warn_put_all:
spin_unlock(&dq_data_lock);
if (ret == 0)
mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
mark_all_dquot_dirty(dquots);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
flush_warnings(warn);
return ret;
}
EXPORT_SYMBOL(dquot_alloc_inode);
@@ -1669,7 +1685,8 @@ EXPORT_SYMBOL(dquot_claim_space_nodirty);
void __dquot_free_space(struct inode *inode, qsize_t number, int flags)
{
unsigned int cnt;
char warntype[MAXQUOTAS];
struct dquot_warn warn[MAXQUOTAS];
struct dquot **dquots = inode->i_dquot;
int reserve = flags & DQUOT_SPACE_RESERVE;
/* First test before acquiring mutex - solves deadlocks when we
@@ -1682,23 +1699,28 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags)
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
int wtype;
warn[cnt].w_type = QUOTA_NL_NOWARN;
if (!dquots[cnt])
continue;
warntype[cnt] = info_bdq_free(inode->i_dquot[cnt], number);
wtype = info_bdq_free(dquots[cnt], number);
if (wtype != QUOTA_NL_NOWARN)
prepare_warning(&warn[cnt], dquots[cnt], wtype);
if (reserve)
dquot_free_reserved_space(inode->i_dquot[cnt], number);
dquot_free_reserved_space(dquots[cnt], number);
else
dquot_decr_space(inode->i_dquot[cnt], number);
dquot_decr_space(dquots[cnt], number);
}
inode_decr_space(inode, number, reserve);
spin_unlock(&dq_data_lock);
if (reserve)
goto out_unlock;
mark_all_dquot_dirty(inode->i_dquot);
mark_all_dquot_dirty(dquots);
out_unlock:
flush_warnings(inode->i_dquot, warntype);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
flush_warnings(warn);
}
EXPORT_SYMBOL(__dquot_free_space);
@@ -1708,7 +1730,8 @@ EXPORT_SYMBOL(__dquot_free_space);
void dquot_free_inode(const struct inode *inode)
{
unsigned int cnt;
char warntype[MAXQUOTAS];
struct dquot_warn warn[MAXQUOTAS];
struct dquot * const *dquots = inode->i_dquot;
/* First test before acquiring mutex - solves deadlocks when we
* re-enter the quota code and are already holding the mutex */
@@ -1718,15 +1741,20 @@ void dquot_free_inode(const struct inode *inode)
down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!inode->i_dquot[cnt])
int wtype;
warn[cnt].w_type = QUOTA_NL_NOWARN;
if (!dquots[cnt])
continue;
warntype[cnt] = info_idq_free(inode->i_dquot[cnt], 1);
dquot_decr_inodes(inode->i_dquot[cnt], 1);
wtype = info_idq_free(dquots[cnt], 1);
if (wtype != QUOTA_NL_NOWARN)
prepare_warning(&warn[cnt], dquots[cnt], wtype);
dquot_decr_inodes(dquots[cnt], 1);
}
spin_unlock(&dq_data_lock);
mark_all_dquot_dirty(inode->i_dquot);
flush_warnings(inode->i_dquot, warntype);
mark_all_dquot_dirty(dquots);
up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
flush_warnings(warn);
}
EXPORT_SYMBOL(dquot_free_inode);
@@ -1747,16 +1775,20 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
struct dquot *transfer_from[MAXQUOTAS] = {};
int cnt, ret = 0;
char is_valid[MAXQUOTAS] = {};
char warntype_to[MAXQUOTAS];
char warntype_from_inodes[MAXQUOTAS], warntype_from_space[MAXQUOTAS];
struct dquot_warn warn_to[MAXQUOTAS];
struct dquot_warn warn_from_inodes[MAXQUOTAS];
struct dquot_warn warn_from_space[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 0;
/* Initialize the arrays */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warntype_to[cnt] = QUOTA_NL_NOWARN;
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
warn_to[cnt].w_type = QUOTA_NL_NOWARN;
warn_from_inodes[cnt].w_type = QUOTA_NL_NOWARN;
warn_from_space[cnt].w_type = QUOTA_NL_NOWARN;
}
down_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
if (IS_NOQUOTA(inode)) { /* File without quota accounting? */
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
@@ -1778,10 +1810,10 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
continue;
is_valid[cnt] = 1;
transfer_from[cnt] = inode->i_dquot[cnt];
ret = check_idq(transfer_to[cnt], 1, warntype_to + cnt);
ret = check_idq(transfer_to[cnt], 1, &warn_to[cnt]);
if (ret)
goto over_quota;
ret = check_bdq(transfer_to[cnt], space, 0, warntype_to + cnt);
ret = check_bdq(transfer_to[cnt], space, 0, &warn_to[cnt]);
if (ret)
goto over_quota;
}
@@ -1794,10 +1826,15 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
continue;
/* Due to IO error we might not have transfer_from[] structure */
if (transfer_from[cnt]) {
warntype_from_inodes[cnt] =
info_idq_free(transfer_from[cnt], 1);
warntype_from_space[cnt] =
info_bdq_free(transfer_from[cnt], space);
int wtype;
wtype = info_idq_free(transfer_from[cnt], 1);
if (wtype != QUOTA_NL_NOWARN)
prepare_warning(&warn_from_inodes[cnt],
transfer_from[cnt], wtype);
wtype = info_bdq_free(transfer_from[cnt], space);
if (wtype != QUOTA_NL_NOWARN)
prepare_warning(&warn_from_space[cnt],
transfer_from[cnt], wtype);
dquot_decr_inodes(transfer_from[cnt], 1);
dquot_decr_space(transfer_from[cnt], cur_space);
dquot_free_reserved_space(transfer_from[cnt],
@@ -1815,9 +1852,9 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
mark_all_dquot_dirty(transfer_from);
mark_all_dquot_dirty(transfer_to);
flush_warnings(transfer_to, warntype_to);
flush_warnings(transfer_from, warntype_from_inodes);
flush_warnings(transfer_from, warntype_from_space);
flush_warnings(warn_to);
flush_warnings(warn_from_inodes);
flush_warnings(warn_from_space);
/* Pass back references to put */
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
if (is_valid[cnt])
@@ -1826,7 +1863,7 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to)
over_quota:
spin_unlock(&dq_data_lock);
up_write(&sb_dqopt(inode->i_sb)->dqptr_sem);
flush_warnings(transfer_to, warntype_to);
flush_warnings(warn_to);
return ret;
}
EXPORT_SYMBOL(__dquot_transfer);