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xfs: kill xfs_qmops

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Kill the quota ops function vector and replace it with direct calls or
stubs in the CONFIG_XFS_QUOTA=n case.

Make sure we check XFS_IS_QUOTA_RUNNING in the right spots.  We can remove
the number of those checks because the XFS_TRANS_DQ_DIRTY flag can't be set
otherwise.

This brings us back closer to the way this code worked in IRIX and earlier
Linux versions, but we keep a lot of the more useful factoring of common
code.

Eventually we should also kill xfs_qm_bhv.c, but that's left for a later
patch.

Reduces the size of the source code by about 250 lines and the size of
XFS module by about 1.5 kilobytes with quotas enabled:

   text	   data	    bss	    dec	    hex	filename
 615957	   2960	   3848	 622765	  980ad	fs/xfs/xfs.o
 617231	   3152	   3848	 624231	  98667	fs/xfs/xfs.o.old

Fallout:

 - xfs_qm_dqattach is split into xfs_qm_dqattach_locked which expects
   the inode locked and xfs_qm_dqattach which does the locking around it,
   thus removing XFS_QMOPT_ILOCKED.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
This commit is contained in:
Christoph Hellwig
2009-06-08 15:33:32 +02:00
committed by Christoph Hellwig
parent 0c5e1ce89f
commit 7d095257e3
23 changed files with 377 additions and 625 deletions
Download Patch File Download Diff File Expand all files Collapse all files

139
fs/xfs/quota/xfs_qm.c
View File

@ -287,11 +287,13 @@ xfs_qm_rele_quotafs_ref(
* Just destroy the quotainfo structure.
*/
void
xfs_qm_unmount_quotadestroy(
xfs_mount_t *mp)
xfs_qm_unmount(
struct xfs_mount *mp)
{
if (mp->m_quotainfo)
if (mp->m_quotainfo) {
xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING);
xfs_qm_destroy_quotainfo(mp);
}
}
@ -385,8 +387,13 @@ xfs_qm_mount_quotas(
if (error) {
xfs_fs_cmn_err(CE_WARN, mp,
"Failed to initialize disk quotas.");
return;
}
return;
#ifdef QUOTADEBUG
if (XFS_IS_QUOTA_ON(mp))
xfs_qm_internalqcheck(mp);
#endif
}
/*
@ -774,12 +781,11 @@ xfs_qm_dqattach_grouphint(
* Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
* into account.
* If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
* If XFS_QMOPT_ILOCKED, then inode sent is already locked EXCL.
* Inode may get unlocked and relocked in here, and the caller must deal with
* the consequences.
*/
int
xfs_qm_dqattach(
xfs_qm_dqattach_locked(
xfs_inode_t *ip,
uint flags)
{
@ -787,17 +793,14 @@ xfs_qm_dqattach(
uint nquotas = 0;
int error = 0;
if ((! XFS_IS_QUOTA_ON(mp)) ||
(! XFS_NOT_DQATTACHED(mp, ip)) ||
(ip->i_ino == mp->m_sb.sb_uquotino) ||
(ip->i_ino == mp->m_sb.sb_gquotino))
if (!XFS_IS_QUOTA_RUNNING(mp) ||
!XFS_IS_QUOTA_ON(mp) ||
!XFS_NOT_DQATTACHED(mp, ip) ||
ip->i_ino == mp->m_sb.sb_uquotino ||
ip->i_ino == mp->m_sb.sb_gquotino)
return 0;
ASSERT((flags & XFS_QMOPT_ILOCKED) == 0 ||
xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (! (flags & XFS_QMOPT_ILOCKED))
xfs_ilock(ip, XFS_ILOCK_EXCL);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (XFS_IS_UQUOTA_ON(mp)) {
error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
@ -849,8 +852,7 @@ xfs_qm_dqattach(
xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot);
}
done:
done:
#ifdef QUOTADEBUG
if (! error) {
if (XFS_IS_UQUOTA_ON(mp))
@ -858,15 +860,22 @@ xfs_qm_dqattach(
if (XFS_IS_OQUOTA_ON(mp))
ASSERT(ip->i_gdquot);
}
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
#endif
return error;
}
if (! (flags & XFS_QMOPT_ILOCKED))
xfs_iunlock(ip, XFS_ILOCK_EXCL);
int
xfs_qm_dqattach(
struct xfs_inode *ip,
uint flags)
{
int error;
xfs_ilock(ip, XFS_ILOCK_EXCL);
error = xfs_qm_dqattach_locked(ip, flags);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
#ifdef QUOTADEBUG
else
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
#endif
return error;
}
@ -912,7 +921,7 @@ xfs_qm_sync(
boolean_t nowait;
int error;
if (! XFS_IS_QUOTA_ON(mp))
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
restarts = 0;
@ -2319,20 +2328,20 @@ xfs_qm_write_sb_changes(
*/
int
xfs_qm_vop_dqalloc(
xfs_mount_t *mp,
xfs_inode_t *ip,
uid_t uid,
gid_t gid,
prid_t prid,
uint flags,
xfs_dquot_t **O_udqpp,
xfs_dquot_t **O_gdqpp)
struct xfs_inode *ip,
uid_t uid,
gid_t gid,
prid_t prid,
uint flags,
struct xfs_dquot **O_udqpp,
struct xfs_dquot **O_gdqpp)
{
int error;
xfs_dquot_t *uq, *gq;
uint lockflags;
struct xfs_mount *mp = ip->i_mount;
struct xfs_dquot *uq, *gq;
int error;
uint lockflags;
if (!XFS_IS_QUOTA_ON(mp))
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
lockflags = XFS_ILOCK_EXCL;
@ -2346,8 +2355,8 @@ xfs_qm_vop_dqalloc(
* if necessary. The dquot(s) will not be locked.
*/
if (XFS_NOT_DQATTACHED(mp, ip)) {
if ((error = xfs_qm_dqattach(ip, XFS_QMOPT_DQALLOC |
XFS_QMOPT_ILOCKED))) {
error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC);
if (error) {
xfs_iunlock(ip, lockflags);
return error;
}
@ -2469,6 +2478,7 @@ xfs_qm_vop_chown(
uint bfield = XFS_IS_REALTIME_INODE(ip) ?
XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
@ -2508,13 +2518,13 @@ xfs_qm_vop_chown_reserve(
xfs_dquot_t *gdqp,
uint flags)
{
int error;
xfs_mount_t *mp;
xfs_mount_t *mp = ip->i_mount;
uint delblks, blkflags, prjflags = 0;
xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq;
int error;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
mp = ip->i_mount;
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
delblks = ip->i_delayed_blks;
@ -2582,28 +2592,23 @@ xfs_qm_vop_chown_reserve(
int
xfs_qm_vop_rename_dqattach(
xfs_inode_t **i_tab)
struct xfs_inode **i_tab)
{
xfs_inode_t *ip;
int i;
int error;
struct xfs_mount *mp = i_tab[0]->i_mount;
int i;
ip = i_tab[0];
if (! XFS_IS_QUOTA_ON(ip->i_mount))
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
if (XFS_NOT_DQATTACHED(ip->i_mount, ip)) {
error = xfs_qm_dqattach(ip, 0);
if (error)
return error;
}
for (i = 1; (i < 4 && i_tab[i]); i++) {
for (i = 0; (i < 4 && i_tab[i]); i++) {
struct xfs_inode *ip = i_tab[i];
int error;
/*
* Watch out for duplicate entries in the table.
*/
if ((ip = i_tab[i]) != i_tab[i-1]) {
if (XFS_NOT_DQATTACHED(ip->i_mount, ip)) {
if (i == 0 || ip != i_tab[i-1]) {
if (XFS_NOT_DQATTACHED(mp, ip)) {
error = xfs_qm_dqattach(ip, 0);
if (error)
return error;
@ -2614,17 +2619,19 @@ xfs_qm_vop_rename_dqattach(
}
void
xfs_qm_vop_dqattach_and_dqmod_newinode(
xfs_trans_t *tp,
xfs_inode_t *ip,
xfs_dquot_t *udqp,
xfs_dquot_t *gdqp)
xfs_qm_vop_create_dqattach(
struct xfs_trans *tp,
struct xfs_inode *ip,
struct xfs_dquot *udqp,
struct xfs_dquot *gdqp)
{
if (!XFS_IS_QUOTA_ON(tp->t_mountp))
struct xfs_mount *mp = tp->t_mountp;
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
ASSERT(XFS_IS_QUOTA_RUNNING(tp->t_mountp));
ASSERT(XFS_IS_QUOTA_RUNNING(mp));
if (udqp) {
xfs_dqlock(udqp);
@ -2632,7 +2639,7 @@ xfs_qm_vop_dqattach_and_dqmod_newinode(
xfs_dqunlock(udqp);
ASSERT(ip->i_udquot == NULL);
ip->i_udquot = udqp;
ASSERT(XFS_IS_UQUOTA_ON(tp->t_mountp));
ASSERT(XFS_IS_UQUOTA_ON(mp));
ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id));
xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1);
}
@ -2642,8 +2649,8 @@ xfs_qm_vop_dqattach_and_dqmod_newinode(
xfs_dqunlock(gdqp);
ASSERT(ip->i_gdquot == NULL);
ip->i_gdquot = gdqp;
ASSERT(XFS_IS_OQUOTA_ON(tp->t_mountp));
ASSERT((XFS_IS_GQUOTA_ON(tp->t_mountp) ?
ASSERT(XFS_IS_OQUOTA_ON(mp));
ASSERT((XFS_IS_GQUOTA_ON(mp) ?
ip->i_d.di_gid : ip->i_d.di_projid) ==
be32_to_cpu(gdqp->q_core.d_id));
xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1);