Per Dave Chinner suggestion, this patch:
1) Corrects the detection of whether a multi-segment buffer is
still tracking data.
2) Clears all the buffer log formats for a multi-segment buffer.
Signed-off-by: Mark Tinguely <tinguely@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_buf_item.c | 13 ++++++++++---
fs/xfs/xfs_buf_item.c | 13 ++++++++++---
fs/xfs/xfs_trans_buf.c | 7 +++++--
2 files changed, 15 insertions(+), 5 deletions(-)
Index: b/fs/xfs/xfs_buf_item.c
===================================================================
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -611,7 +611,7 @@ xfs_buf_item_unlock(
{
struct xfs_buf_log_item *bip = BUF_ITEM(lip);
struct xfs_buf *bp = bip->bli_buf;
- int aborted;
+ int aborted, clean, i;
uint hold;
/* Clear the buffer's association with this transaction. */
@@ -654,8 +654,15 @@ xfs_buf_item_unlock(
* If the buf item isn't tracking any data, free it, otherwise drop the
* reference we hold to it.
*/
- if (xfs_bitmap_empty(bip->__bli_format.blf_data_map,
- bip->__bli_format.blf_map_size))
+ clean = 1;
+ for (i = 0; i < bip->bli_format_count; i++) {
+ if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map,
+ bip->bli_formats[i].blf_map_size)) {
+ clean = 0;
+ break;
+ }
+ }
+ if (clean)
xfs_buf_item_relse(bp);
else
atomic_dec(&bip->bli_refcount);
Index: b/fs/xfs/xfs_trans_buf.c
===================================================================
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -643,6 +643,7 @@ xfs_trans_binval(
xfs_buf_t *bp)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
+ int i;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
@@ -670,8 +671,10 @@ xfs_trans_binval(
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
bip->__bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
bip->__bli_format.blf_flags |= XFS_BLF_CANCEL;
- memset((char *)(bip->__bli_format.blf_data_map), 0,
- (bip->__bli_format.blf_map_size * sizeof(uint)));
+ for (i = 0; i < bip->bli_format_count; i++) {
+ memset(bip->bli_formats[i].blf_data_map, 0,
+ (bip->bli_formats[i].blf_map_size * sizeof(uint)));
+ }
bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
tp->t_flags |= XFS_TRANS_DIRTY;
}
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