if (blip->bli_item.li_type == XFS_LI_BUF &&
blip->bli_buf->b_target == target &&
XFS_BUF_ADDR(blip->bli_buf) == blkno &&
- XFS_BUF_COUNT(blip->bli_buf) == len)
+ BBTOB(blip->bli_buf->b_length) == len)
return blip->bli_buf;
}
xfs_buf_log_item_t *bip;
if (flags == 0)
- flags = XBF_LOCK | XBF_MAPPED;
+ flags = XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
XFS_BUF_DONE(bp);
}
- /*
- * If the buffer is stale then it was binval'ed
- * since last read. This doesn't matter since the
- * caller isn't allowed to use the data anyway.
- */
- else if (XFS_BUF_ISSTALE(bp))
- ASSERT(!XFS_BUF_ISDELAYWRITE(bp));
-
ASSERT(bp->b_transp == tp);
bip = bp->b_fspriv;
ASSERT(bip != NULL);
int error;
if (flags == 0)
- flags = XBF_LOCK | XBF_MAPPED;
+ flags = XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
return 0;
shutdown_abort:
- /*
- * the theory here is that buffer is good but we're
- * bailing out because the filesystem is being forcibly
- * shut down. So we should leave the b_flags alone since
- * the buffer's not staled and just get out.
- */
-#if defined(DEBUG)
- if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
- xfs_notice(mp, "about to pop assert, bp == 0x%p", bp);
-#endif
- ASSERT((bp->b_flags & (XBF_STALE|XBF_DELWRI)) !=
- (XBF_STALE|XBF_DELWRI));
-
trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
xfs_buf_relse(bp);
*bpp = NULL;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
- ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp)));
+ ASSERT(first <= last && last < BBTOB(bp->b_length));
ASSERT(bp->b_iodone == NULL ||
bp->b_iodone == xfs_buf_iodone_callbacks);
bp->b_iodone = xfs_buf_iodone_callbacks;
bip->bli_item.li_cb = xfs_buf_iodone;
- xfs_buf_delwri_queue(bp);
-
trace_xfs_trans_log_buf(bip);
/*
/*
- * This called to invalidate a buffer that is being used within
- * a transaction. Typically this is because the blocks in the
- * buffer are being freed, so we need to prevent it from being
- * written out when we're done. Allowing it to be written again
- * might overwrite data in the free blocks if they are reallocated
- * to a file.
+ * Invalidate a buffer that is being used within a transaction.
*
- * We prevent the buffer from being written out by clearing the
- * B_DELWRI flag. We can't always
- * get rid of the buf log item at this point, though, because
- * the buffer may still be pinned by another transaction. If that
- * is the case, then we'll wait until the buffer is committed to
- * disk for the last time (we can tell by the ref count) and
- * free it in xfs_buf_item_unpin(). Until it is cleaned up we
- * will keep the buffer locked so that the buffer and buf log item
- * are not reused.
+ * Typically this is because the blocks in the buffer are being freed, so we
+ * need to prevent it from being written out when we're done. Allowing it
+ * to be written again might overwrite data in the free blocks if they are
+ * reallocated to a file.
+ *
+ * We prevent the buffer from being written out by marking it stale. We can't
+ * get rid of the buf log item at this point because the buffer may still be
+ * pinned by another transaction. If that is the case, then we'll wait until
+ * the buffer is committed to disk for the last time (we can tell by the ref
+ * count) and free it in xfs_buf_item_unpin(). Until that happens we will
+ * keep the buffer locked so that the buffer and buf log item are not reused.
+ *
+ * We also set the XFS_BLF_CANCEL flag in the buf log format structure and log
+ * the buf item. This will be used at recovery time to determine that copies
+ * of the buffer in the log before this should not be replayed.
+ *
+ * We mark the item descriptor and the transaction dirty so that we'll hold
+ * the buffer until after the commit.
+ *
+ * Since we're invalidating the buffer, we also clear the state about which
+ * parts of the buffer have been logged. We also clear the flag indicating
+ * that this is an inode buffer since the data in the buffer will no longer
+ * be valid.
+ *
+ * We set the stale bit in the buffer as well since we're getting rid of it.
*/
void
xfs_trans_binval(
* If the buffer is already invalidated, then
* just return.
*/
- ASSERT(!(XFS_BUF_ISDELAYWRITE(bp)));
ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF));
return;
}
- /*
- * Clear the dirty bit in the buffer and set the STALE flag
- * in the buf log item. The STALE flag will be used in
- * xfs_buf_item_unpin() to determine if it should clean up
- * when the last reference to the buf item is given up.
- * We set the XFS_BLF_CANCEL flag in the buf log format structure
- * and log the buf item. This will be used at recovery time
- * to determine that copies of the buffer in the log before
- * this should not be replayed.
- * We mark the item descriptor and the transaction dirty so
- * that we'll hold the buffer until after the commit.
- *
- * Since we're invalidating the buffer, we also clear the state
- * about which parts of the buffer have been logged. We also
- * clear the flag indicating that this is an inode buffer since
- * the data in the buffer will no longer be valid.
- *
- * We set the stale bit in the buffer as well since we're getting
- * rid of it.
- */
xfs_buf_stale(bp);
+
bip->bli_flags |= XFS_BLI_STALE;
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
projects / firefly-linux-kernel-4.4.55.git / blobdiff