xfs: buffer type overruns blf_flags field
The buffer type passed to log recvoery in the buffer log item
overruns the blf_flags field. I had assumed that flags field was a
32 bit value, and it turns out it is a unisgned short. Therefore
having 19 flags doesn't really work.
Convert the buffer type field to numeric value, and use the top 5
bits of the flags field for it. We currently have 17 types of
buffers, so using 5 bits gives us plenty of room for expansion in
future....
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 5aebd9b..56814e3 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -312,15 +312,15 @@
switch (be16_to_cpu(info->magic)) {
case XFS_DA3_NODE_MAGIC:
case XFS_DA_NODE_MAGIC:
- type = XFS_BLF_DA_NODE_BUF;
+ type = XFS_BLFT_DA_NODE_BUF;
break;
case XFS_ATTR_LEAF_MAGIC:
case XFS_ATTR3_LEAF_MAGIC:
- type = XFS_BLF_ATTR_LEAF_BUF;
+ type = XFS_BLFT_ATTR_LEAF_BUF;
break;
case XFS_DIR2_LEAFN_MAGIC:
case XFS_DIR3_LEAFN_MAGIC:
- type = XFS_BLF_DIR_LEAFN_BUF;
+ type = XFS_BLFT_DIR_LEAFN_BUF;
break;
default:
type = 0;
@@ -361,7 +361,7 @@
if (error)
return(error);
bp->b_ops = &xfs_da3_node_buf_ops;
- xfs_trans_buf_set_type(tp, bp, XFS_BLF_DA_NODE_BUF);
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DA_NODE_BUF);
node = bp->b_addr;
if (xfs_sb_version_hascrc(&mp->m_sb)) {
@@ -597,7 +597,7 @@
* we are about to copy oldroot to bp, so set up the type
* of bp while we know exactly what it will be.
*/
- xfs_trans_buf_set_type(tp, bp, XFS_BLF_DA_NODE_BUF);
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DA_NODE_BUF);
} else {
struct xfs_dir3_icleaf_hdr leafhdr;
struct xfs_dir2_leaf_entry *ents;
@@ -615,7 +615,7 @@
* we are about to copy oldroot to bp, so set up the type
* of bp while we know exactly what it will be.
*/
- xfs_trans_buf_set_type(tp, bp, XFS_BLF_DIR_LEAFN_BUF);
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF);
}
/*
