/*
* Efi items have no locking, so just return.
*/
STATIC void
xfs_efi_item_unlock(
struct xfs_log_item *lip)
{
if (lip->li_flags & XFS_LI_ABORTED)
xfs_efi_item_free(EFI_ITEM(lip));
}
/*
* The EFI is logged only once and cannot be moved in the log, so simply return
* the lsn at which it's been logged. For bulk transaction committed
* processing, the EFI may be processed but not yet unpinned prior to the EFD
* being processed. Set the XFS_EFI_COMMITTED flag so this case can be detected
* when processing the EFD.
*/
STATIC xfs_lsn_t
xfs_efi_item_committed(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
set_bit(XFS_EFI_COMMITTED, &efip->efi_flags);
return lsn;
}
/*
* While EFIs cannot really be pinned, the unpin operation is the last place at
* which the EFI is manipulated during a transaction. If we are being asked to
* remove the EFI it's because the transaction has been cancelled and by
* definition that means the EFI cannot be in the AIL so remove it from the
* transaction and free it. Otherwise coordinate with xfs_efi_release() (via
* XFS_EFI_COMMITTED) to determine who gets to free the EFI.
*/
STATIC void
xfs_efi_item_unpin(
struct xfs_log_item *lip,
int remove)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
if (remove) {
ASSERT(!(lip->li_flags & XFS_LI_IN_AIL));
xfs_trans_del_item(lip);
xfs_efi_item_free(efip);
return;
}
__xfs_efi_release(efip);
}
/*
* This is called to fill in the vector of log iovecs for the
* given efi log item. We use only 1 iovec, and we point that
* at the efi_log_format structure embedded in the efi item.
* It is at this point that we assert that all of the extent
* slots in the efi item have been filled.
*/
STATIC void
xfs_efi_item_format(
struct xfs_log_item *lip,
struct xfs_log_iovec *log_vector)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
uint size;
ASSERT(efip->efi_next_extent == efip->efi_format.efi_nextents);
efip->efi_format.efi_type = XFS_LI_EFI;
size = sizeof(xfs_efi_log_format_t);
size += (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t);
efip->efi_format.efi_size = 1;
log_vector->i_addr = &efip->efi_format;
log_vector->i_len = size;
log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT;
ASSERT(size >= sizeof(xfs_efi_log_format_t));
}
/*
* While EFIs cannot really be pinned, the unpin operation is the
* last place at which the EFI is manipulated during a transaction.
* Here we coordinate with xfs_efi_cancel() to determine who gets to
* free the EFI.
*/
STATIC void
xfs_efi_item_unpin(
struct xfs_log_item *lip,
int remove)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
struct xfs_ail *ailp = lip->li_ailp;
spin_lock(&ailp->xa_lock);
if (efip->efi_flags & XFS_EFI_CANCELED) {
if (remove)
xfs_trans_del_item(lip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, lip);
xfs_efi_item_free(efip);
} else {
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_unlock(&ailp->xa_lock);
}
}
