/*
* This function uses an alternate strategy for tracking the bytes
* that the user requests to be logged. This can then be used
* in conjunction with the bli_orig array in the buf log item to
* catch bugs in our callers' code.
*
* We also double check the bits set in xfs_buf_item_log using a
* simple algorithm to check that every byte is accounted for.
*/
STATIC void
xfs_buf_item_log_debug(
xfs_buf_log_item_t *bip,
uint first,
uint last)
{
uint x;
uint byte;
uint nbytes;
uint chunk_num;
uint word_num;
uint bit_num;
uint bit_set;
uint *wordp;
ASSERT(bip->bli_logged != NULL);
byte = first;
nbytes = last - first + 1;
bfset(bip->bli_logged, first, nbytes);
for (x = 0; x < nbytes; x++) {
chunk_num = byte >> XFS_BLF_SHIFT;
word_num = chunk_num >> BIT_TO_WORD_SHIFT;
bit_num = chunk_num & (NBWORD - 1);
wordp = &(bip->__bli_format.blf_data_map[word_num]);
bit_set = *wordp & (1 << bit_num);
ASSERT(bit_set);
byte++;
}
}
/*
* This function is called when we flush something into a buffer without
* logging it. This happens for things like inodes which are logged
* separately from the buffer.
*/
void
xfs_buf_item_flush_log_debug(
xfs_buf_t *bp,
uint first,
uint last)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
uint nbytes;
if (bip == NULL || (bip->bli_item.li_type != XFS_LI_BUF))
return;
ASSERT(bip->bli_logged != NULL);
nbytes = last - first + 1;
bfset(bip->bli_logged, first, nbytes);
}
/*
* This function is called when we flush something into a buffer without
* logging it. This happens for things like inodes which are logged
* separately from the buffer.
*/
void
xfs_buf_item_flush_log_debug(
xfs_buf_t *bp,
uint first,
uint last)
{
xfs_buf_log_item_t *bip;
uint nbytes;
bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*);
if ((bip == NULL) || (bip->bli_item.li_type != XFS_LI_BUF)) {
return;
}
ASSERT(bip->bli_logged != NULL);
nbytes = last - first + 1;
bfset(bip->bli_logged, first, nbytes);
}
