[PATCH 05/46] xfs: devirtualize ->node_hdr_to_disk

Christoph Hellwig
2019-11-07T18:24:30Z

Replace the ->node_hdr_to_disk dir ops method with a directly called
xfs_da_node_hdr_to_disk helper that takes care of the v4 vs v5
difference.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_attr_leaf.c | 2 +-
fs/xfs/libxfs/xfs_da_btree.c | 39 ++++++++++++++++++++++++++++-------
fs/xfs/libxfs/xfs_da_btree.h | 2 ++
fs/xfs/libxfs/xfs_da_format.c | 34 ------------------------------
fs/xfs/libxfs/xfs_dir2.h | 2 --
5 files changed, 35 insertions(+), 44 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index 08176cf261fb..ba1c3486fe54 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -1196,7 +1196,7 @@ xfs_attr3_leaf_to_node(
btree[0].hashval = entries[icleafhdr.count - 1].hashval;
btree[0].before = cpu_to_be32(blkno);
icnodehdr.count = 1;
- dp->d_ops->node_hdr_to_disk(node, &icnodehdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node, &icnodehdr);
xfs_trans_log_buf(args->trans, bp1, 0, args->geo->blksize - 1);
error = 0;
out:
diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
index 434f1e7191e4..2a0221fcad82 100644
--- a/fs/xfs/libxfs/xfs_da_btree.c
+++ b/fs/xfs/libxfs/xfs_da_btree.c
@@ -135,6 +135,31 @@ xfs_da3_node_hdr_from_disk(
}
}

+void
+xfs_da3_node_hdr_to_disk(
+ struct xfs_mount *mp,
+ struct xfs_da_intnode *to,
+ struct xfs_da3_icnode_hdr *from)
+{
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ struct xfs_da3_intnode *to3 = (struct xfs_da3_intnode *)to;
+
+ ASSERT(from->magic == XFS_DA3_NODE_MAGIC);
+ to3->hdr.info.hdr.forw = cpu_to_be32(from->forw);
+ to3->hdr.info.hdr.back = cpu_to_be32(from->back);
+ to3->hdr.info.hdr.magic = cpu_to_be16(from->magic);
+ to3->hdr.__count = cpu_to_be16(from->count);
+ to3->hdr.__level = cpu_to_be16(from->level);
+ } else {
+ ASSERT(from->magic == XFS_DA_NODE_MAGIC);
+ to->hdr.info.forw = cpu_to_be32(from->forw);
+ to->hdr.info.back = cpu_to_be32(from->back);
+ to->hdr.info.magic = cpu_to_be16(from->magic);
+ to->hdr.__count = cpu_to_be16(from->count);
+ to->hdr.__level = cpu_to_be16(from->level);
+ }
+}
+
/*
* Verify an xfs_da3_blkinfo structure. Note that the da3 fields are only
* accessible on v5 filesystems. This header format is common across da node,
@@ -385,7 +410,7 @@ xfs_da3_node_create(
}
ichdr.level = level;

- dp->d_ops->node_hdr_to_disk(node, &ichdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node, &ichdr);
xfs_trans_log_buf(tp, bp,
XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));

@@ -668,7 +693,7 @@ xfs_da3_root_split(
btree[1].hashval = cpu_to_be32(blk2->hashval);
btree[1].before = cpu_to_be32(blk2->blkno);
nodehdr.count = 2;
- dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node, &nodehdr);

#ifdef DEBUG
if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
@@ -893,11 +918,11 @@ xfs_da3_node_rebalance(
/*
* Log header of node 1 and all current bits of node 2.
*/
- dp->d_ops->node_hdr_to_disk(node1, &nodehdr1);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node1, &nodehdr1);
xfs_trans_log_buf(tp, blk1->bp,
XFS_DA_LOGRANGE(node1, &node1->hdr, dp->d_ops->node_hdr_size));

- dp->d_ops->node_hdr_to_disk(node2, &nodehdr2);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node2, &nodehdr2);
xfs_trans_log_buf(tp, blk2->bp,
XFS_DA_LOGRANGE(node2, &node2->hdr,
dp->d_ops->node_hdr_size +
@@ -969,7 +994,7 @@ xfs_da3_node_add(
tmp + sizeof(*btree)));

nodehdr.count += 1;
- dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node, &nodehdr);
xfs_trans_log_buf(state->args->trans, oldblk->bp,
XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));

@@ -1405,7 +1430,7 @@ xfs_da3_node_remove(
xfs_trans_log_buf(state->args->trans, drop_blk->bp,
XFS_DA_LOGRANGE(node, &btree[index], sizeof(btree[index])));
nodehdr.count -= 1;
- dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, node, &nodehdr);
xfs_trans_log_buf(state->args->trans, drop_blk->bp,
XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));

@@ -1477,7 +1502,7 @@ xfs_da3_node_unbalance(
memcpy(&save_btree[sindex], &drop_btree[0], tmp);
save_hdr.count += drop_hdr.count;

- dp->d_ops->node_hdr_to_disk(save_node, &save_hdr);
+ xfs_da3_node_hdr_to_disk(dp->i_mount, save_node, &save_hdr);
xfs_trans_log_buf(tp, save_blk->bp,
XFS_DA_LOGRANGE(save_node, &save_node->hdr,
dp->d_ops->node_hdr_size));
diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h
index 21dc03c818e9..932f3ba6a813 100644
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -217,6 +217,8 @@ void xfs_da_state_free(xfs_da_state_t *state);

void xfs_da3_node_hdr_from_disk(struct xfs_mount *mp,
struct xfs_da3_icnode_hdr *to, struct xfs_da_intnode *from);
+void xfs_da3_node_hdr_to_disk(struct xfs_mount *mp,
+ struct xfs_da_intnode *to, struct xfs_da3_icnode_hdr *from);

extern struct kmem_zone *xfs_da_state_zone;
extern const struct xfs_nameops xfs_default_nameops;
diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c
index 267aca857126..912096416a86 100644
--- a/fs/xfs/libxfs/xfs_da_format.c
+++ b/fs/xfs/libxfs/xfs_da_format.c
@@ -510,35 +510,6 @@ xfs_da3_node_tree_p(struct xfs_da_intnode *dap)
return ((struct xfs_da3_intnode *)dap)->__btree;
}

-static void
-xfs_da2_node_hdr_to_disk(
- struct xfs_da_intnode *to,
- struct xfs_da3_icnode_hdr *from)
-{
- ASSERT(from->magic == XFS_DA_NODE_MAGIC);
- to->hdr.info.forw = cpu_to_be32(from->forw);
- to->hdr.info.back = cpu_to_be32(from->back);
- to->hdr.info.magic = cpu_to_be16(from->magic);
- to->hdr.__count = cpu_to_be16(from->count);
- to->hdr.__level = cpu_to_be16(from->level);
-}
-
-static void
-xfs_da3_node_hdr_to_disk(
- struct xfs_da_intnode *to,
- struct xfs_da3_icnode_hdr *from)
-{
- struct xfs_da3_node_hdr *hdr3 = (struct xfs_da3_node_hdr *)to;
-
- ASSERT(from->magic == XFS_DA3_NODE_MAGIC);
- hdr3->info.hdr.forw = cpu_to_be32(from->forw);
- hdr3->info.hdr.back = cpu_to_be32(from->back);
- hdr3->info.hdr.magic = cpu_to_be16(from->magic);
- hdr3->__count = cpu_to_be16(from->count);
- hdr3->__level = cpu_to_be16(from->level);
-}
-
-
/*
* Directory free space block operations
*/
@@ -698,7 +669,6 @@ static const struct xfs_dir_ops xfs_dir2_ops = {
.leaf_ents_p = xfs_dir2_leaf_ents_p,

.node_hdr_size = sizeof(struct xfs_da_node_hdr),
- .node_hdr_to_disk = xfs_da2_node_hdr_to_disk,
.node_tree_p = xfs_da2_node_tree_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
@@ -747,7 +717,6 @@ static const struct xfs_dir_ops xfs_dir2_ftype_ops = {
.leaf_ents_p = xfs_dir2_leaf_ents_p,

.node_hdr_size = sizeof(struct xfs_da_node_hdr),
- .node_hdr_to_disk = xfs_da2_node_hdr_to_disk,
.node_tree_p = xfs_da2_node_tree_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
@@ -796,7 +765,6 @@ static const struct xfs_dir_ops xfs_dir3_ops = {
.leaf_ents_p = xfs_dir3_leaf_ents_p,

.node_hdr_size = sizeof(struct xfs_da3_node_hdr),
- .node_hdr_to_disk = xfs_da3_node_hdr_to_disk,
.node_tree_p = xfs_da3_node_tree_p,

.free_hdr_size = sizeof(struct xfs_dir3_free_hdr),
@@ -810,13 +778,11 @@ static const struct xfs_dir_ops xfs_dir3_ops = {

static const struct xfs_dir_ops xfs_dir2_nondir_ops = {
.node_hdr_size = sizeof(struct xfs_da_node_hdr),
- .node_hdr_to_disk = xfs_da2_node_hdr_to_disk,
.node_tree_p = xfs_da2_node_tree_p,
};

static const struct xfs_dir_ops xfs_dir3_nondir_ops = {
.node_hdr_size = sizeof(struct xfs_da3_node_hdr),
- .node_hdr_to_disk = xfs_da3_node_hdr_to_disk,
.node_tree_p = xfs_da3_node_tree_p,
};

diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index 573043f59c85..c16efeae0f2b 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -82,8 +82,6 @@ struct xfs_dir_ops {
(*leaf_ents_p)(struct xfs_dir2_leaf *lp);

int node_hdr_size;
- void (*node_hdr_to_disk)(struct xfs_da_intnode *to,
- struct xfs_da3_icnode_hdr *from);
struct xfs_da_node_entry *
(*node_tree_p)(struct xfs_da_intnode *dap);

--
2.20.1