int
libxfs_trans_iget(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
uint flags,
uint lock_flags,
xfs_inode_t **ipp)
{
int error;
xfs_inode_t *ip;
xfs_inode_log_item_t *iip;
if (tp == NULL)
return libxfs_iget(mp, tp, ino, lock_flags, ipp, 0);
error = libxfs_iget(mp, tp, ino, lock_flags, &ip, 0);
if (error)
return error;
ASSERT(ip != NULL);
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, mp);
iip = ip->i_itemp;
xfs_trans_add_item(tp, (xfs_log_item_t *)(iip));
/* initialize i_transp so we can find it incore */
ip->i_transp = tp;
*ipp = ip;
return 0;
}
/*
* Initialize the inode log item for a newly allocated (in-core) inode.
*
* Inode extents can only reside within an AG. Hence specify the starting
* block for the inode chunk by offset within an AG as well as the
* length of the allocated extent.
*
* This joins the item to the transaction and marks it dirty so
* that we don't need a separate call to do this, nor does the
* caller need to know anything about the icreate item.
*/
void
xfs_icreate_log(
struct xfs_trans *tp,
xfs_agnumber_t agno,
xfs_agblock_t agbno,
unsigned int count,
unsigned int inode_size,
xfs_agblock_t length,
unsigned int generation)
{
struct xfs_icreate_item *icp;
icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
&xfs_icreate_item_ops);
icp->ic_format.icl_type = XFS_LI_ICREATE;
icp->ic_format.icl_size = 1; /* single vector */
icp->ic_format.icl_ag = cpu_to_be32(agno);
icp->ic_format.icl_agbno = cpu_to_be32(agbno);
icp->ic_format.icl_count = cpu_to_be32(count);
icp->ic_format.icl_isize = cpu_to_be32(inode_size);
icp->ic_format.icl_length = cpu_to_be32(length);
icp->ic_format.icl_gen = cpu_to_be32(generation);
xfs_trans_add_item(tp, &icp->ic_item);
tp->t_flags |= XFS_TRANS_DIRTY;
icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY;
}
/*
* Add a locked inode to the transaction.
*
* The inode must be locked, and it cannot be associated with any transaction.
*/
void
xfs_trans_ijoin(
struct xfs_trans *tp,
struct xfs_inode *ip)
{
xfs_inode_log_item_t *iip;
ASSERT(ip->i_transp == NULL);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
iip = ip->i_itemp;
ASSERT(iip->ili_lock_flags == 0);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &iip->ili_item);
xfs_trans_inode_broot_debug(ip);
/*
* Initialize i_transp so we can find it with xfs_inode_incore()
* in xfs_trans_iget() above.
*/
ip->i_transp = tp;
}
/*
* This routine is called to allocate a "refcount update done"
* log item.
*/
struct xfs_cud_log_item *
xfs_trans_get_cud(
struct xfs_trans *tp,
struct xfs_cui_log_item *cuip)
{
struct xfs_cud_log_item *cudp;
cudp = xfs_cud_init(tp->t_mountp, cuip);
xfs_trans_add_item(tp, &cudp->cud_item);
return cudp;
}
/*
* This routine is called to allocate a "bmap update done"
* log item.
*/
struct xfs_bud_log_item *
xfs_trans_get_bud(
struct xfs_trans *tp,
struct xfs_bui_log_item *buip)
{
struct xfs_bud_log_item *budp;
budp = xfs_bud_init(tp->t_mountp, buip);
xfs_trans_add_item(tp, &budp->bud_item);
return budp;
}
/*
* This routine is called to allocate an "extent free intention"
* log item that will hold nextents worth of extents. The
* caller must use all nextents extents, because we are not
* flexible about this at all.
*/
xfs_efi_log_item_t *
xfs_trans_get_efi(xfs_trans_t *tp,
uint nextents)
{
xfs_efi_log_item_t *efip;
ASSERT(tp != NULL);
ASSERT(nextents > 0);
efip = xfs_efi_init(tp->t_mountp, nextents);
ASSERT(efip != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &efip->efi_item);
return efip;
}
/*
* This routine is called to allocate a quotaoff log item.
*/
xfs_qoff_logitem_t *
xfs_trans_get_qoff_item(
xfs_trans_t *tp,
xfs_qoff_logitem_t *startqoff,
uint flags)
{
xfs_qoff_logitem_t *q;
ASSERT(tp != NULL);
q = xfs_qm_qoff_logitem_init(tp->t_mountp, startqoff, flags);
ASSERT(q != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &q->qql_item);
return q;
}
/* Get an CUI. */
STATIC void *
xfs_refcount_update_create_intent(
struct xfs_trans *tp,
unsigned int count)
{
struct xfs_cui_log_item *cuip;
ASSERT(tp != NULL);
ASSERT(count > 0);
cuip = xfs_cui_init(tp->t_mountp, count);
ASSERT(cuip != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &cuip->cui_item);
return cuip;
}
/* Get an BUI. */
STATIC void *
xfs_bmap_update_create_intent(
struct xfs_trans *tp,
unsigned int count)
{
struct xfs_bui_log_item *buip;
ASSERT(count == XFS_BUI_MAX_FAST_EXTENTS);
ASSERT(tp != NULL);
buip = xfs_bui_init(tp->t_mountp);
ASSERT(buip != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &buip->bui_item);
return buip;
}
/*
* Add the locked dquot to the transaction.
* The dquot must be locked, and it cannot be associated with any
* transaction.
*/
void
xfs_trans_dqjoin(
xfs_trans_t *tp,
xfs_dquot_t *dqp)
{
ASSERT(dqp->q_transp != tp);
ASSERT(XFS_DQ_IS_LOCKED(dqp));
ASSERT(dqp->q_logitem.qli_dquot == dqp);
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &dqp->q_logitem.qli_item);
/*
* Initialize d_transp so we can later determine if this dquot is
* associated with this transaction.
*/
dqp->q_transp = tp;
}
/*
* This routine is called to allocate an "extent free done"
* log item that will hold nextents worth of extents. The
* caller must use all nextents extents, because we are not
* flexible about this at all.
*/
xfs_efd_log_item_t *
xfs_trans_get_efd(xfs_trans_t *tp,
xfs_efi_log_item_t *efip,
uint nextents)
{
xfs_efd_log_item_t *efdp;
ASSERT(tp != NULL);
ASSERT(nextents > 0);
efdp = xfs_efd_init(tp->t_mountp, efip, nextents);
ASSERT(efdp != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
(void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);
return (efdp);
}
/*
* Add a locked inode to the transaction.
*
* The inode must be locked, and it cannot be associated with any transaction.
* If lock_flags is non-zero the inode will be unlocked on transaction commit.
*/
void
xfs_trans_ijoin(
struct xfs_trans *tp,
struct xfs_inode *ip,
uint lock_flags)
{
xfs_inode_log_item_t *iip;
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
iip = ip->i_itemp;
ASSERT(iip->ili_lock_flags == 0);
iip->ili_lock_flags = lock_flags;
/*
* Get a log_item_desc to point at the new item.
*/
xfs_trans_add_item(tp, &iip->ili_item);
}
/*
* Add the locked inode to the transaction.
* The inode must be locked, and it cannot be associated with any
* transaction. The caller must specify the locks already held
* on the inode.
*/
void
xfs_trans_ijoin(
xfs_trans_t *tp,
xfs_inode_t *ip,
uint lock_flags)
{
xfs_inode_log_item_t *iip;
ASSERT(ip->i_transp == NULL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT(lock_flags & XFS_ILOCK_EXCL);
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
iip = ip->i_itemp;
ASSERT(iip->ili_flags == 0);
ASSERT(iip->ili_ilock_recur == 0);
ASSERT(iip->ili_iolock_recur == 0);
/*
* Get a log_item_desc to point at the new item.
*/
(void) xfs_trans_add_item(tp, (xfs_log_item_t*)(iip));
xfs_trans_inode_broot_debug(ip);
/*
* If the IO lock is already held, mark that in the inode log item.
*/
if (lock_flags & XFS_IOLOCK_EXCL) {
iip->ili_flags |= XFS_ILI_IOLOCKED_EXCL;
} else if (lock_flags & XFS_IOLOCK_SHARED) {
iip->ili_flags |= XFS_ILI_IOLOCKED_SHARED;
}
/*
* Initialize i_transp so we can find it with xfs_inode_incore()
* in xfs_trans_iget() above.
*/
ip->i_transp = tp;
}
void
libxfs_trans_ijoin(
xfs_trans_t *tp,
xfs_inode_t *ip,
uint lock_flags)
{
xfs_inode_log_item_t *iip;
ASSERT(ip->i_transp == NULL);
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
iip = ip->i_itemp;
ASSERT(iip->ili_flags == 0);
ASSERT(iip->ili_inode != NULL);
xfs_trans_add_item(tp, (xfs_log_item_t *)(iip));
ip->i_transp = tp;
#ifdef XACT_DEBUG
fprintf(stderr, "ijoin'd inode %llu, transaction %p\n", ip->i_ino, tp);
#endif
}
/*
* Add the locked dquot to the transaction.
* The dquot must be locked, and it cannot be associated with any
* transaction.
*/
void
xfs_trans_dqjoin(
xfs_trans_t *tp,
xfs_dquot_t *dqp)
{
xfs_dq_logitem_t *lp;
ASSERT(! XFS_DQ_IS_ADDEDTO_TRX(tp, dqp));
ASSERT(XFS_DQ_IS_LOCKED(dqp));
ASSERT(XFS_DQ_IS_LOGITEM_INITD(dqp));
lp = &dqp->q_logitem;
/*
* Get a log_item_desc to point at the new item.
*/
(void) xfs_trans_add_item(tp, (xfs_log_item_t*)(lp));
/*
* Initialize i_transp so we can later determine if this dquot is
* associated with this transaction.
*/
dqp->q_transp = tp;
}
/*
* Get and lock the inode for the caller if it is not already
* locked within the given transaction. If it is already locked
* within the transaction, just increment its lock recursion count
* and return a pointer to it.
*
* For an inode to be locked in a transaction, the inode lock, as
* opposed to the io lock, must be taken exclusively. This ensures
* that the inode can be involved in only 1 transaction at a time.
* Lock recursion is handled on the io lock, but only for lock modes
* of equal or lesser strength. That is, you can recur on the io lock
* held EXCL with a SHARED request but not vice versa. Also, if
* the inode is already a part of the transaction then you cannot
* go from not holding the io lock to having it EXCL or SHARED.
*
* Use the inode cache routine xfs_inode_incore() to find the inode
* if it is already owned by this transaction.
*
* If we don't already own the inode, use xfs_iget() to get it.
* Since the inode log item structure is embedded in the incore
* inode structure and is initialized when the inode is brought
* into memory, there is nothing to do with it here.
*
* If the given transaction pointer is NULL, just call xfs_iget().
* This simplifies code which must handle both cases.
*/
int
xfs_trans_iget(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
uint lock_flags,
xfs_inode_t **ipp)
{
int error;
xfs_inode_t *ip;
xfs_inode_log_item_t *iip;
/*
* If the transaction pointer is NULL, just call the normal
* xfs_iget().
*/
if (tp == NULL) {
return (xfs_iget(mp, NULL, ino, lock_flags, ipp, 0));
}
/*
* If we find the inode in core with this transaction
* pointer in its i_transp field, then we know we already
* have it locked. In this case we just increment the lock
* recursion count and return the inode to the caller.
* Assert that the inode is already locked in the mode requested
* by the caller. We cannot do lock promotions yet, so
* die if someone gets this wrong.
*/
if ((ip = xfs_inode_incore(tp->t_mountp, ino, tp)) != NULL) {
/*
* Make sure that the inode lock is held EXCL and
* that the io lock is never upgraded when the inode
* is already a part of the transaction.
*/
ASSERT(ip->i_itemp != NULL);
ASSERT(lock_flags & XFS_ILOCK_EXCL);
ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
ASSERT((!(lock_flags & XFS_IOLOCK_EXCL)) ||
ismrlocked(&ip->i_iolock, MR_UPDATE));
ASSERT((!(lock_flags & XFS_IOLOCK_EXCL)) ||
(ip->i_itemp->ili_flags & XFS_ILI_IOLOCKED_EXCL));
ASSERT((!(lock_flags & XFS_IOLOCK_SHARED)) ||
ismrlocked(&ip->i_iolock, (MR_UPDATE | MR_ACCESS)));
ASSERT((!(lock_flags & XFS_IOLOCK_SHARED)) ||
(ip->i_itemp->ili_flags & XFS_ILI_IOLOCKED_ANY));
if (lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) {
ip->i_itemp->ili_iolock_recur++;
}
if (lock_flags & XFS_ILOCK_EXCL) {
ip->i_itemp->ili_ilock_recur++;
}
*ipp = ip;
return 0;
}
ASSERT(lock_flags & XFS_ILOCK_EXCL);
error = xfs_iget(tp->t_mountp, tp, ino, lock_flags, &ip, 0);
if (error) {
return error;
}
ASSERT(ip != NULL);
/*
* Get a log_item_desc to point at the new item.
*/
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, mp);
iip = ip->i_itemp;
(void) xfs_trans_add_item(tp, (xfs_log_item_t *)(iip));
xfs_trans_inode_broot_debug(ip);
/*
* If the IO lock has been acquired, mark that in
* the inode log item so we'll know to unlock it
* when the transaction commits.
*/
ASSERT(iip->ili_flags == 0);
if (lock_flags & XFS_IOLOCK_EXCL) {
iip->ili_flags |= XFS_ILI_IOLOCKED_EXCL;
} else if (lock_flags & XFS_IOLOCK_SHARED) {
iip->ili_flags |= XFS_ILI_IOLOCKED_SHARED;
}
/*
* Initialize i_transp so we can find it with xfs_inode_incore()
* above.
*/
ip->i_transp = tp;
*ipp = ip;
return 0;
}