[PATCH 14/46] xfs: devirtualize ->free_hdr_to_disk

Christoph Hellwig
2019-11-07T18:24:53Z

Replace the ->free_hdr_to_disk dir ops method with a directly called
xfs_dir2_free_hdr_to_disk helper that takes care of the differences
between the v4 and v5 on-disk format.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_da_format.c | 31 -------------------------------
fs/xfs/libxfs/xfs_dir2.h | 2 --
fs/xfs/libxfs/xfs_dir2_node.c | 33 +++++++++++++++++++++++++++++----
3 files changed, 29 insertions(+), 37 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c
index d0e541d9d335..b943d9443d55 100644
--- a/fs/xfs/libxfs/xfs_da_format.c
+++ b/fs/xfs/libxfs/xfs_da_format.c
@@ -468,34 +468,6 @@ xfs_dir3_db_to_fdindex(struct xfs_da_geometry *geo, xfs_dir2_db_t db)
return db % xfs_dir3_free_max_bests(geo);
}

-static void
-xfs_dir2_free_hdr_to_disk(
- struct xfs_dir2_free *to,
- struct xfs_dir3_icfree_hdr *from)
-{
- ASSERT(from->magic == XFS_DIR2_FREE_MAGIC);
-
- to->hdr.magic = cpu_to_be32(from->magic);
- to->hdr.firstdb = cpu_to_be32(from->firstdb);
- to->hdr.nvalid = cpu_to_be32(from->nvalid);
- to->hdr.nused = cpu_to_be32(from->nused);
-}
-
-static void
-xfs_dir3_free_hdr_to_disk(
- struct xfs_dir2_free *to,
- struct xfs_dir3_icfree_hdr *from)
-{
- struct xfs_dir3_free_hdr *hdr3 = (struct xfs_dir3_free_hdr *)to;
-
- ASSERT(from->magic == XFS_DIR3_FREE_MAGIC);
-
- hdr3->hdr.magic = cpu_to_be32(from->magic);
- hdr3->firstdb = cpu_to_be32(from->firstdb);
- hdr3->nvalid = cpu_to_be32(from->nvalid);
- hdr3->nused = cpu_to_be32(from->nused);
-}
-
static const struct xfs_dir_ops xfs_dir2_ops = {
.sf_entsize = xfs_dir2_sf_entsize,
.sf_nextentry = xfs_dir2_sf_nextentry,
@@ -527,7 +499,6 @@ static const struct xfs_dir_ops xfs_dir2_ops = {
.data_unused_p = xfs_dir2_data_unused_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
- .free_hdr_to_disk = xfs_dir2_free_hdr_to_disk,
.free_max_bests = xfs_dir2_free_max_bests,
.free_bests_p = xfs_dir2_free_bests_p,
.db_to_fdb = xfs_dir2_db_to_fdb,
@@ -565,7 +536,6 @@ static const struct xfs_dir_ops xfs_dir2_ftype_ops = {
.data_unused_p = xfs_dir2_data_unused_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
- .free_hdr_to_disk = xfs_dir2_free_hdr_to_disk,
.free_max_bests = xfs_dir2_free_max_bests,
.free_bests_p = xfs_dir2_free_bests_p,
.db_to_fdb = xfs_dir2_db_to_fdb,
@@ -603,7 +573,6 @@ static const struct xfs_dir_ops xfs_dir3_ops = {
.data_unused_p = xfs_dir3_data_unused_p,

.free_hdr_size = sizeof(struct xfs_dir3_free_hdr),
- .free_hdr_to_disk = xfs_dir3_free_hdr_to_disk,
.free_max_bests = xfs_dir3_free_max_bests,
.free_bests_p = xfs_dir3_free_bests_p,
.db_to_fdb = xfs_dir3_db_to_fdb,
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index c3e6a6fb7e37..613a78281d03 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -73,8 +73,6 @@ struct xfs_dir_ops {
(*data_unused_p)(struct xfs_dir2_data_hdr *hdr);

int free_hdr_size;
- void (*free_hdr_to_disk)(struct xfs_dir2_free *to,
- struct xfs_dir3_icfree_hdr *from);
int (*free_max_bests)(struct xfs_da_geometry *geo);
__be16 * (*free_bests_p)(struct xfs_dir2_free *free);
xfs_dir2_db_t (*db_to_fdb)(struct xfs_da_geometry *geo,
diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
index d337ecd4e3be..4e49ac64a2ff 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -244,6 +244,31 @@ xfs_dir2_free_hdr_from_disk(
}
}

+static void
+xfs_dir2_free_hdr_to_disk(
+ struct xfs_mount *mp,
+ struct xfs_dir2_free *to,
+ struct xfs_dir3_icfree_hdr *from)
+{
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ struct xfs_dir3_free *to3 = (struct xfs_dir3_free *)to;
+
+ ASSERT(from->magic == XFS_DIR3_FREE_MAGIC);
+
+ to3->hdr.hdr.magic = cpu_to_be32(from->magic);
+ to3->hdr.firstdb = cpu_to_be32(from->firstdb);
+ to3->hdr.nvalid = cpu_to_be32(from->nvalid);
+ to3->hdr.nused = cpu_to_be32(from->nused);
+ } else {
+ ASSERT(from->magic == XFS_DIR2_FREE_MAGIC);
+
+ to->hdr.magic = cpu_to_be32(from->magic);
+ to->hdr.firstdb = cpu_to_be32(from->firstdb);
+ to->hdr.nvalid = cpu_to_be32(from->nvalid);
+ to->hdr.nused = cpu_to_be32(from->nused);
+ }
+}
+
int
xfs_dir2_free_read(
struct xfs_trans *tp,
@@ -302,7 +327,7 @@ xfs_dir3_free_get_buf(
uuid_copy(&hdr3->hdr.uuid, &mp->m_sb.sb_meta_uuid);
} else
hdr.magic = XFS_DIR2_FREE_MAGIC;
- dp->d_ops->free_hdr_to_disk(bp->b_addr, &hdr);
+ xfs_dir2_free_hdr_to_disk(mp, bp->b_addr, &hdr);
*bpp = bp;
return 0;
}
@@ -420,7 +445,7 @@ xfs_dir2_leaf_to_node(
freehdr.nused = n;
freehdr.nvalid = be32_to_cpu(ltp->bestcount);

- dp->d_ops->free_hdr_to_disk(fbp->b_addr, &freehdr);
+ xfs_dir2_free_hdr_to_disk(dp->i_mount, fbp->b_addr, &freehdr);
xfs_dir2_free_log_bests(args, fbp, 0, freehdr.nvalid - 1);
xfs_dir2_free_log_header(args, fbp);

@@ -1182,7 +1207,7 @@ xfs_dir3_data_block_free(
logfree = 1;
}

- dp->d_ops->free_hdr_to_disk(free, &freehdr);
+ xfs_dir2_free_hdr_to_disk(dp->i_mount, free, &freehdr);
xfs_dir2_free_log_header(args, fbp);

/*
@@ -1739,7 +1764,7 @@ xfs_dir2_node_add_datablk(
*/
if (bests[*findex] == cpu_to_be16(NULLDATAOFF)) {
freehdr.nused++;
- dp->d_ops->free_hdr_to_disk(fbp->b_addr, &freehdr);
+ xfs_dir2_free_hdr_to_disk(mp, fbp->b_addr, &freehdr);
xfs_dir2_free_log_header(args, fbp);
}

--
2.20.1