[PATCH 6.19 006/311] xfs: factor out xfs_attr3_node_entry_remove

Greg Kroah-Hartman
2026-04-08T18:51:15Z

From: Long Li <leo.lilong@huawei.com>

[ Upstream commit ce4e789cf3561c9fac73cc24445bfed9ea0c514b ]

Factor out wrapper xfs_attr3_node_entry_remove function, which
exported for external use.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Long Li <leo.lilong@huawei.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Stable-dep-of: b854e1c4eff3 ("xfs: close crash window in attr dabtree inactivation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/xfs/libxfs/xfs_da_btree.c | 53 ++++++++++++++++++++++++++++++++++---------
fs/xfs/libxfs/xfs_da_btree.h | 2 +
2 files changed, 44 insertions(+), 11 deletions(-)

--- a/fs/xfs/libxfs/xfs_da_btree.c
+++ b/fs/xfs/libxfs/xfs_da_btree.c
@@ -1506,21 +1506,20 @@ xfs_da3_fixhashpath(
}

/*
- * Remove an entry from an intermediate node.
+ * Internal implementation to remove an entry from an intermediate node.
*/
STATIC void
-xfs_da3_node_remove(
- struct xfs_da_state *state,
- struct xfs_da_state_blk *drop_blk)
+__xfs_da3_node_remove(
+ struct xfs_trans *tp,
+ struct xfs_inode *dp,
+ struct xfs_da_geometry *geo,
+ struct xfs_da_state_blk *drop_blk)
{
struct xfs_da_intnode *node;
struct xfs_da3_icnode_hdr nodehdr;
struct xfs_da_node_entry *btree;
int index;
int tmp;
- struct xfs_inode *dp = state->args->dp;
-
- trace_xfs_da_node_remove(state->args);

node = drop_blk->bp->b_addr;
xfs_da3_node_hdr_from_disk(dp->i_mount, &nodehdr, node);
@@ -1536,17 +1535,17 @@ xfs_da3_node_remove(
tmp = nodehdr.count - index - 1;
tmp *= (uint)sizeof(xfs_da_node_entry_t);
memmove(&btree[index], &btree[index + 1], tmp);
- xfs_trans_log_buf(state->args->trans, drop_blk->bp,
+ xfs_trans_log_buf(tp, drop_blk->bp,
XFS_DA_LOGRANGE(node, &btree[index], tmp));
index = nodehdr.count - 1;
}
memset(&btree[index], 0, sizeof(xfs_da_node_entry_t));
- xfs_trans_log_buf(state->args->trans, drop_blk->bp,
+ xfs_trans_log_buf(tp, drop_blk->bp,
XFS_DA_LOGRANGE(node, &btree[index], sizeof(btree[index])));
nodehdr.count -= 1;
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, state->args->geo->node_hdr_size));
+ xfs_trans_log_buf(tp, drop_blk->bp,
+ XFS_DA_LOGRANGE(node, &node->hdr, geo->node_hdr_size));

/*
* Copy the last hash value from the block to propagate upwards.
@@ -1555,6 +1554,38 @@ xfs_da3_node_remove(
}

/*
+ * Remove an entry from an intermediate node.
+ */
+STATIC void
+xfs_da3_node_remove(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *drop_blk)
+{
+ trace_xfs_da_node_remove(state->args);
+
+ __xfs_da3_node_remove(state->args->trans, state->args->dp,
+ state->args->geo, drop_blk);
+}
+
+/*
+ * Remove an entry from an intermediate attr node at the specified index.
+ */
+void
+xfs_attr3_node_entry_remove(
+ struct xfs_trans *tp,
+ struct xfs_inode *dp,
+ struct xfs_buf *bp,
+ int index)
+{
+ struct xfs_da_state_blk blk = {
+ .index = index,
+ .bp = bp,
+ };
+
+ __xfs_da3_node_remove(tp, dp, dp->i_mount->m_attr_geo, &blk);
+}
+
+/*
* Unbalance the elements between two intermediate nodes,
* move all Btree elements from one node into another.
*/
--- a/fs/xfs/libxfs/xfs_da_btree.h
+++ b/fs/xfs/libxfs/xfs_da_btree.h
@@ -184,6 +184,8 @@ int xfs_da3_split(xfs_da_state_t *state)
int xfs_da3_join(xfs_da_state_t *state);
void xfs_da3_fixhashpath(struct xfs_da_state *state,
struct xfs_da_state_path *path_to_to_fix);
+void xfs_attr3_node_entry_remove(struct xfs_trans *tp, struct xfs_inode *dp,
+ struct xfs_buf *bp, int index);

/*
* Routines used for finding things in the Btree.