[PATCH] xfs: get rid of xfs_ag_resv_rmapbt_alloc

Long Li
2024-07-02T13:50:36Z

The pag in xfs_ag_resv_rmapbt_alloc() is already held when the struct
xfs_btree_cur is initialized in xfs_rmapbt_init_cursor(), so there is no
need to get pag again.

On the other hand, in xfs_rmapbt_free_block(), the similar function
xfs_ag_resv_rmapbt_free() was removed in commit 92a005448f6f ("xfs: get
rid of unnecessary xfs_perag_{get,put} pairs"), xfs_ag_resv_rmapbt_alloc()
was left because scrub used it, but now scrub has removed it. Therefore,
we could get rid of xfs_ag_resv_rmapbt_alloc() just like the rmap free
block, make the code cleaner.

Signed-off-by: Long Li <leo.lilong@huawei.com>
---
fs/xfs/libxfs/xfs_ag_resv.h | 19 -------------------
fs/xfs/libxfs/xfs_rmap_btree.c | 8 +++++++-
2 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_ag_resv.h b/fs/xfs/libxfs/xfs_ag_resv.h
index ff20ed93de77..f247eeff7358 100644
--- a/fs/xfs/libxfs/xfs_ag_resv.h
+++ b/fs/xfs/libxfs/xfs_ag_resv.h
@@ -33,23 +33,4 @@ xfs_perag_resv(
}
}

-/*
- * RMAPBT reservation accounting wrappers. Since rmapbt blocks are sourced from
- * the AGFL, they are allocated one at a time and the reservation updates don't
- * require a transaction.
- */
-static inline void
-xfs_ag_resv_rmapbt_alloc(
- struct xfs_mount *mp,
- xfs_agnumber_t agno)
-{
- struct xfs_alloc_arg args = { NULL };
- struct xfs_perag *pag;
-
- args.len = 1;
- pag = xfs_perag_get(mp, agno);
- xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);
- xfs_perag_put(pag);
-}
-
#endif /* __XFS_AG_RESV_H__ */
diff --git a/fs/xfs/libxfs/xfs_rmap_btree.c b/fs/xfs/libxfs/xfs_rmap_btree.c
index 9e759efa81cc..aa1d29814b74 100644
--- a/fs/xfs/libxfs/xfs_rmap_btree.c
+++ b/fs/xfs/libxfs/xfs_rmap_btree.c
@@ -88,6 +88,7 @@ xfs_rmapbt_alloc_block(
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
struct xfs_perag *pag = cur->bc_ag.pag;
+ struct xfs_alloc_arg args = { NULL };
int error;
xfs_agblock_t bno;

@@ -107,7 +108,12 @@ xfs_rmapbt_alloc_block(
be32_add_cpu(&agf->agf_rmap_blocks, 1);
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_RMAP_BLOCKS);

- xfs_ag_resv_rmapbt_alloc(cur->bc_mp, pag->pag_agno);
+ /*
+ * Since rmapbt blocks are sourced from the AGFL, they are allocated one
+ * at a time and the reservation updates don't require a transaction.
+ */
+ args.len = 1;
+ xfs_ag_resv_alloc_extent(pag, XFS_AG_RESV_RMAPBT, &args);

*stat = 1;
return 0;
--
2.39.2