[PATCH 10/46] xfs: add a entries pointer to struct xfs_dir3_icleaf_hdr

Christoph Hellwig
2019-11-07T18:24:43Z

All callers of the ->node_tree_p dir operation already have a struct
xfs_dir3_icleaf_hdr from a previous call to xfs_da_leaf_hdr_from_disk at
hand, or just need slight changes to the calling conventions to do so.
Add a pointer to the entries to struct xfs_dir3_icleaf_hdr to clean up
this pattern. To make this possible the xfs_dir3_leaf_log_ents function
grow a new argument to pass the xfs_dir3_icleaf_hdr that call callers
already have, and xfs_dir2_leaf_lookup_int returns the
xfs_dir3_icleaf_hdr to the callers so that they can later use it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/libxfs/xfs_da_btree.c | 7 +--
fs/xfs/libxfs/xfs_da_format.c | 15 -----
fs/xfs/libxfs/xfs_dir2.h | 2 -
fs/xfs/libxfs/xfs_dir2_block.c | 7 +--
fs/xfs/libxfs/xfs_dir2_leaf.c | 101 +++++++++++++++------------------
fs/xfs/libxfs/xfs_dir2_node.c | 64 +++++++++------------
fs/xfs/libxfs/xfs_dir2_priv.h | 9 ++-
fs/xfs/scrub/dir.c | 14 ++---
8 files changed, 93 insertions(+), 126 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
index 1742e8293574..46b1c3fb305c 100644
--- a/fs/xfs/libxfs/xfs_da_btree.c
+++ b/fs/xfs/libxfs/xfs_da_btree.c
@@ -640,15 +640,14 @@ xfs_da3_root_split(
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;

leaf = (xfs_dir2_leaf_t *)oldroot;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);

ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
leafhdr.magic == XFS_DIR3_LEAFN_MAGIC);
- size = (int)((char *)&ents[leafhdr.count] - (char *)leaf);
+ size = (int)((char *)&leafhdr.ents[leafhdr.count] -
+ (char *)leaf);
level = 0;

/*
@@ -2297,7 +2296,7 @@ xfs_da3_swap_lastblock(
dead_leaf2 = (xfs_dir2_leaf_t *)dead_info;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr,
dead_leaf2);
- ents = dp->d_ops->leaf_ents_p(dead_leaf2);
+ ents = leafhdr.ents;
dead_level = 0;
dead_hash = be32_to_cpu(ents[leafhdr.count - 1].hashval);
} else {
diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c
index 193708d12459..ed21ce01502f 100644
--- a/fs/xfs/libxfs/xfs_da_format.c
+++ b/fs/xfs/libxfs/xfs_da_format.c
@@ -411,12 +411,6 @@ xfs_dir2_max_leaf_ents(struct xfs_da_geometry *geo)
(uint)sizeof(struct xfs_dir2_leaf_entry);
}

-static struct xfs_dir2_leaf_entry *
-xfs_dir2_leaf_ents_p(struct xfs_dir2_leaf *lp)
-{
- return lp->__ents;
-}
-
static int
xfs_dir3_max_leaf_ents(struct xfs_da_geometry *geo)
{
@@ -424,12 +418,6 @@ xfs_dir3_max_leaf_ents(struct xfs_da_geometry *geo)
(uint)sizeof(struct xfs_dir2_leaf_entry);
}

-static struct xfs_dir2_leaf_entry *
-xfs_dir3_leaf_ents_p(struct xfs_dir2_leaf *lp)
-{
- return ((struct xfs_dir3_leaf *)lp)->__ents;
-}
-
/*
* Directory free space block operations
*/
@@ -584,7 +572,6 @@ static const struct xfs_dir_ops xfs_dir2_ops = {

.leaf_hdr_size = sizeof(struct xfs_dir2_leaf_hdr),
.leaf_max_ents = xfs_dir2_max_leaf_ents,
- .leaf_ents_p = xfs_dir2_leaf_ents_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
.free_hdr_to_disk = xfs_dir2_free_hdr_to_disk,
@@ -627,7 +614,6 @@ static const struct xfs_dir_ops xfs_dir2_ftype_ops = {

.leaf_hdr_size = sizeof(struct xfs_dir2_leaf_hdr),
.leaf_max_ents = xfs_dir2_max_leaf_ents,
- .leaf_ents_p = xfs_dir2_leaf_ents_p,

.free_hdr_size = sizeof(struct xfs_dir2_free_hdr),
.free_hdr_to_disk = xfs_dir2_free_hdr_to_disk,
@@ -670,7 +656,6 @@ static const struct xfs_dir_ops xfs_dir3_ops = {

.leaf_hdr_size = sizeof(struct xfs_dir3_leaf_hdr),
.leaf_max_ents = xfs_dir3_max_leaf_ents,
- .leaf_ents_p = xfs_dir3_leaf_ents_p,

.free_hdr_size = sizeof(struct xfs_dir3_free_hdr),
.free_hdr_to_disk = xfs_dir3_free_hdr_to_disk,
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index 15a1a72dc126..b46657974134 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -74,8 +74,6 @@ struct xfs_dir_ops {

int leaf_hdr_size;
int (*leaf_max_ents)(struct xfs_da_geometry *geo);
- struct xfs_dir2_leaf_entry *
- (*leaf_ents_p)(struct xfs_dir2_leaf *lp);

int free_hdr_size;
void (*free_hdr_to_disk)(struct xfs_dir2_free *to,
diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
index d9ad89f6fd79..065fe10a842b 100644
--- a/fs/xfs/libxfs/xfs_dir2_block.c
+++ b/fs/xfs/libxfs/xfs_dir2_block.c
@@ -914,7 +914,6 @@ xfs_dir2_leaf_to_block(
__be16 *tagp; /* end of entry (tag) */
int to; /* block/leaf to index */
xfs_trans_t *tp; /* transaction pointer */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

trace_xfs_dir2_leaf_to_block(args);
@@ -924,7 +923,6 @@ xfs_dir2_leaf_to_block(
mp = dp->i_mount;
leaf = lbp->b_addr;
xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);

ASSERT(leafhdr.magic == XFS_DIR2_LEAF1_MAGIC ||
@@ -1004,9 +1002,10 @@ xfs_dir2_leaf_to_block(
*/
lep = xfs_dir2_block_leaf_p(btp);
for (from = to = 0; from < leafhdr.count; from++) {
- if (ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
+ if (leafhdr.ents[from].address ==
+ cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
continue;
- lep[to++] = ents[from];
+ lep[to++] = leafhdr.ents[from];
}
ASSERT(to == be32_to_cpu(btp->count));
xfs_dir2_block_log_leaf(tp, dbp, 0, be32_to_cpu(btp->count) - 1);
diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
index 07734c0fe8a7..5e3e96efdaca 100644
--- a/fs/xfs/libxfs/xfs_dir2_leaf.c
+++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
@@ -24,7 +24,8 @@
* Local function declarations.
*/
static int xfs_dir2_leaf_lookup_int(xfs_da_args_t *args, struct xfs_buf **lbpp,
- int *indexp, struct xfs_buf **dbpp);
+ int *indexp, struct xfs_buf **dbpp,
+ struct xfs_dir3_icleaf_hdr *leafhdr);
static void xfs_dir3_leaf_log_bests(struct xfs_da_args *args,
struct xfs_buf *bp, int first, int last);
static void xfs_dir3_leaf_log_tail(struct xfs_da_args *args,
@@ -44,6 +45,7 @@ xfs_dir2_leaf_hdr_from_disk(
to->magic = be16_to_cpu(from3->hdr.info.hdr.magic);
to->count = be16_to_cpu(from3->hdr.count);
to->stale = be16_to_cpu(from3->hdr.stale);
+ to->ents = from3->__ents;

ASSERT(to->magic == XFS_DIR3_LEAF1_MAGIC ||
to->magic == XFS_DIR3_LEAFN_MAGIC);
@@ -53,6 +55,7 @@ xfs_dir2_leaf_hdr_from_disk(
to->magic = be16_to_cpu(from->hdr.info.magic);
to->count = be16_to_cpu(from->hdr.count);
to->stale = be16_to_cpu(from->hdr.stale);
+ to->ents = from->__ents;

ASSERT(to->magic == XFS_DIR2_LEAF1_MAGIC ||
to->magic == XFS_DIR2_LEAFN_MAGIC);
@@ -139,7 +142,6 @@ xfs_dir3_leaf_check_int(
struct xfs_dir3_icleaf_hdr *hdr,
struct xfs_dir2_leaf *leaf)
{
- struct xfs_dir2_leaf_entry *ents;
xfs_dir2_leaf_tail_t *ltp;
int stale;
int i;
@@ -158,7 +160,6 @@ xfs_dir3_leaf_check_int(
hdr = &leafhdr;
}

- ents = ops->leaf_ents_p(leaf);
ltp = xfs_dir2_leaf_tail_p(geo, leaf);

/*
@@ -172,17 +173,17 @@ xfs_dir3_leaf_check_int(
/* Leaves and bests don't overlap in leaf format. */
if ((hdr->magic == XFS_DIR2_LEAF1_MAGIC ||
hdr->magic == XFS_DIR3_LEAF1_MAGIC) &&
- (char *)&ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp))
+ (char *)&hdr->ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp))
return __this_address;

/* Check hash value order, count stale entries. */
for (i = stale = 0; i < hdr->count; i++) {
if (i + 1 < hdr->count) {
- if (be32_to_cpu(ents[i].hashval) >
- be32_to_cpu(ents[i + 1].hashval))
+ if (be32_to_cpu(hdr->ents[i].hashval) >
+ be32_to_cpu(hdr->ents[i + 1].hashval))
return __this_address;
}
- if (ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
+ if (hdr->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
stale++;
}
if (hdr->stale != stale)
@@ -404,7 +405,6 @@ xfs_dir2_block_to_leaf(
int needscan; /* need to rescan bestfree */
xfs_trans_t *tp; /* transaction pointer */
struct xfs_dir2_data_free *bf;
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

trace_xfs_dir2_block_to_leaf(args);
@@ -434,7 +434,6 @@ xfs_dir2_block_to_leaf(
btp = xfs_dir2_block_tail_p(args->geo, hdr);
blp = xfs_dir2_block_leaf_p(btp);
bf = dp->d_ops->data_bestfree_p(hdr);
- ents = dp->d_ops->leaf_ents_p(leaf);

/*
* Set the counts in the leaf header.
@@ -449,8 +448,9 @@ xfs_dir2_block_to_leaf(
* Could compact these but I think we always do the conversion
* after squeezing out stale entries.
*/
- memcpy(ents, blp, be32_to_cpu(btp->count) * sizeof(xfs_dir2_leaf_entry_t));
- xfs_dir3_leaf_log_ents(args, lbp, 0, leafhdr.count - 1);
+ memcpy(leafhdr.ents, blp,
+ be32_to_cpu(btp->count) * sizeof(struct xfs_dir2_leaf_entry));
+ xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, 0, leafhdr.count - 1);
needscan = 0;
needlog = 1;
/*
@@ -665,8 +665,8 @@ xfs_dir2_leaf_addname(
index = xfs_dir2_leaf_search_hash(args, lbp);
leaf = lbp->b_addr;
ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
+ ents = leafhdr.ents;
bestsp = xfs_dir2_leaf_bests_p(ltp);
length = dp->d_ops->data_entsize(args->namelen);

@@ -912,7 +912,7 @@ xfs_dir2_leaf_addname(
*/
xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr);
xfs_dir3_leaf_log_header(args, lbp);
- xfs_dir3_leaf_log_ents(args, lbp, lfloglow, lfloghigh);
+ xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, lfloglow, lfloghigh);
xfs_dir3_leaf_check(dp, lbp);
xfs_dir3_data_check(dp, dbp);
return 0;
@@ -932,7 +932,6 @@ xfs_dir3_leaf_compact(
xfs_dir2_leaf_t *leaf; /* leaf structure */
int loglow; /* first leaf entry to log */
int to; /* target leaf index */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_inode *dp = args->dp;

leaf = bp->b_addr;
@@ -942,9 +941,9 @@ xfs_dir3_leaf_compact(
/*
* Compress out the stale entries in place.
*/
- ents = dp->d_ops->leaf_ents_p(leaf);
for (from = to = 0, loglow = -1; from < leafhdr->count; from++) {
- if (ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
+ if (leafhdr->ents[from].address ==
+ cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
continue;
/*
* Only actually copy the entries that are different.
@@ -952,7 +951,7 @@ xfs_dir3_leaf_compact(
if (from > to) {
if (loglow == -1)
loglow = to;
- ents[to] = ents[from];
+ leafhdr->ents[to] = leafhdr->ents[from];
}
to++;
}
@@ -966,7 +965,7 @@ xfs_dir3_leaf_compact(
xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, leafhdr);
xfs_dir3_leaf_log_header(args, bp);
if (loglow != -1)
- xfs_dir3_leaf_log_ents(args, bp, loglow, to - 1);
+ xfs_dir3_leaf_log_ents(args, leafhdr, bp, loglow, to - 1);
}

/*
@@ -1095,6 +1094,7 @@ xfs_dir3_leaf_log_bests(
void
xfs_dir3_leaf_log_ents(
struct xfs_da_args *args,
+ struct xfs_dir3_icleaf_hdr *hdr,
struct xfs_buf *bp,
int first,
int last)
@@ -1102,16 +1102,14 @@ xfs_dir3_leaf_log_ents(
xfs_dir2_leaf_entry_t *firstlep; /* pointer to first entry */
xfs_dir2_leaf_entry_t *lastlep; /* pointer to last entry */
struct xfs_dir2_leaf *leaf = bp->b_addr;
- struct xfs_dir2_leaf_entry *ents;

ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) ||
leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) ||
leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC));

- ents = args->dp->d_ops->leaf_ents_p(leaf);
- firstlep = &ents[first];
- lastlep = &ents[last];
+ firstlep = &hdr->ents[first];
+ lastlep = &hdr->ents[last];
xfs_trans_log_buf(args->trans, bp,
(uint)((char *)firstlep - (char *)leaf),
(uint)((char *)lastlep - (char *)leaf + sizeof(*lastlep) - 1));
@@ -1173,28 +1171,27 @@ xfs_dir2_leaf_lookup(
int error; /* error return code */
int index; /* found entry index */
struct xfs_buf *lbp; /* leaf buffer */
- xfs_dir2_leaf_t *leaf; /* leaf structure */
xfs_dir2_leaf_entry_t *lep; /* leaf entry */
xfs_trans_t *tp; /* transaction pointer */
- struct xfs_dir2_leaf_entry *ents;
+ struct xfs_dir3_icleaf_hdr leafhdr;

trace_xfs_dir2_leaf_lookup(args);

/*
* Look up name in the leaf block, returning both buffers and index.
*/
- if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
+ error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
+ if (error)
return error;
- }
+
tp = args->trans;
dp = args->dp;
xfs_dir3_leaf_check(dp, lbp);
- leaf = lbp->b_addr;
- ents = dp->d_ops->leaf_ents_p(leaf);
+
/*
* Get to the leaf entry and contained data entry address.
*/
- lep = &ents[index];
+ lep = &leafhdr.ents[index];

/*
* Point to the data entry.
@@ -1224,7 +1221,8 @@ xfs_dir2_leaf_lookup_int(
xfs_da_args_t *args, /* operation arguments */
struct xfs_buf **lbpp, /* out: leaf buffer */
int *indexp, /* out: index in leaf block */
- struct xfs_buf **dbpp) /* out: data buffer */
+ struct xfs_buf **dbpp, /* out: data buffer */
+ struct xfs_dir3_icleaf_hdr *leafhdr)
{
xfs_dir2_db_t curdb = -1; /* current data block number */
struct xfs_buf *dbp = NULL; /* data buffer */
@@ -1240,8 +1238,6 @@ xfs_dir2_leaf_lookup_int(
xfs_trans_t *tp; /* transaction pointer */
xfs_dir2_db_t cidb = -1; /* case match data block no. */
enum xfs_dacmp cmp; /* name compare result */
- struct xfs_dir2_leaf_entry *ents;
- struct xfs_dir3_icleaf_hdr leafhdr;

dp = args->dp;
tp = args->trans;
@@ -1254,8 +1250,7 @@ xfs_dir2_leaf_lookup_int(
*lbpp = lbp;
leaf = lbp->b_addr;
xfs_dir3_leaf_check(dp, lbp);
- ents = dp->d_ops->leaf_ents_p(leaf);
- xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf);
+ xfs_dir2_leaf_hdr_from_disk(mp, leafhdr, leaf);

/*
* Look for the first leaf entry with our hash value.
@@ -1265,8 +1260,9 @@ xfs_dir2_leaf_lookup_int(
* Loop over all the entries with the right hash value
* looking to match the name.
*/
- for (lep = &ents[index];
- index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
+ for (lep = &leafhdr->ents[index];
+ index < leafhdr->count &&
+ be32_to_cpu(lep->hashval) == args->hashval;
lep++, index++) {
/*
* Skip over stale leaf entries.
@@ -1372,7 +1368,6 @@ xfs_dir2_leaf_removename(
int needscan; /* need to rescan data frees */
xfs_dir2_data_off_t oldbest; /* old value of best free */
struct xfs_dir2_data_free *bf; /* bestfree table */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

trace_xfs_dir2_leaf_removename(args);
@@ -1380,20 +1375,20 @@ xfs_dir2_leaf_removename(
/*
* Lookup the leaf entry, get the leaf and data blocks read in.
*/
- if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
+ error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
+ if (error)
return error;
- }
+
dp = args->dp;
leaf = lbp->b_addr;
hdr = dbp->b_addr;
xfs_dir3_data_check(dp, dbp);
bf = dp->d_ops->data_bestfree_p(hdr);
- xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
+
/*
* Point to the leaf entry, use that to point to the data entry.
*/
- lep = &ents[index];
+ lep = &leafhdr.ents[index];
db = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
dep = (xfs_dir2_data_entry_t *)((char *)hdr +
xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
@@ -1419,7 +1414,7 @@ xfs_dir2_leaf_removename(
xfs_dir3_leaf_log_header(args, lbp);

lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR);
- xfs_dir3_leaf_log_ents(args, lbp, index, index);
+ xfs_dir3_leaf_log_ents(args, &leafhdr, lbp, index, index);

/*
* Scan the freespace in the data block again if necessary,
@@ -1508,26 +1503,24 @@ xfs_dir2_leaf_replace(
int error; /* error return code */
int index; /* index of leaf entry */
struct xfs_buf *lbp; /* leaf buffer */
- xfs_dir2_leaf_t *leaf; /* leaf structure */
xfs_dir2_leaf_entry_t *lep; /* leaf entry */
xfs_trans_t *tp; /* transaction pointer */
- struct xfs_dir2_leaf_entry *ents;
+ struct xfs_dir3_icleaf_hdr leafhdr;

trace_xfs_dir2_leaf_replace(args);

/*
* Look up the entry.
*/
- if ((error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp))) {
+ error = xfs_dir2_leaf_lookup_int(args, &lbp, &index, &dbp, &leafhdr);
+ if (error)
return error;
- }
+
dp = args->dp;
- leaf = lbp->b_addr;
- ents = dp->d_ops->leaf_ents_p(leaf);
/*
* Point to the leaf entry, get data address from it.
*/
- lep = &ents[index];
+ lep = &leafhdr.ents[index];
/*
* Point to the data entry.
*/
@@ -1561,21 +1554,17 @@ xfs_dir2_leaf_search_hash(
xfs_dahash_t hashwant; /* hash value looking for */
int high; /* high leaf index */
int low; /* low leaf index */
- xfs_dir2_leaf_t *leaf; /* leaf structure */
xfs_dir2_leaf_entry_t *lep; /* leaf entry */
int mid=0; /* current leaf index */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

- leaf = lbp->b_addr;
- ents = args->dp->d_ops->leaf_ents_p(leaf);
- xfs_dir2_leaf_hdr_from_disk(args->dp->i_mount, &leafhdr, leaf);
+ xfs_dir2_leaf_hdr_from_disk(args->dp->i_mount, &leafhdr, lbp->b_addr);

/*
* Note, the table cannot be empty, so we have to go through the loop.
* Binary search the leaf entries looking for our hash value.
*/
- for (lep = ents, low = 0, high = leafhdr.count - 1,
+ for (lep = leafhdr.ents, low = 0, high = leafhdr.count - 1,
hashwant = args->hashval;
low <= high; ) {
mid = (low + high) >> 1;
diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
index 98cd645a8c99..721dd2dcba8d 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -441,7 +441,7 @@ xfs_dir2_leafn_add(
trace_xfs_dir2_leafn_add(args, index);

xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
+ ents = leafhdr.ents;

/*
* Quick check just to make sure we are not going to index
@@ -499,7 +499,7 @@ xfs_dir2_leafn_add(

xfs_dir2_leaf_hdr_to_disk(dp->i_mount, leaf, &leafhdr);
xfs_dir3_leaf_log_header(args, bp);
- xfs_dir3_leaf_log_ents(args, bp, lfloglow, lfloghigh);
+ xfs_dir3_leaf_log_ents(args, &leafhdr, bp, lfloglow, lfloghigh);
xfs_dir3_leaf_check(dp, bp);
return 0;
}
@@ -534,11 +534,9 @@ xfs_dir2_leaf_lasthash(
struct xfs_buf *bp, /* leaf buffer */
int *count) /* count of entries in leaf */
{
- struct xfs_dir2_leaf *leaf = bp->b_addr;
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

- xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
+ xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, bp->b_addr);

ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
leafhdr.magic == XFS_DIR3_LEAFN_MAGIC ||
@@ -549,9 +547,7 @@ xfs_dir2_leaf_lasthash(
*count = leafhdr.count;
if (!leafhdr.count)
return 0;
-
- ents = dp->d_ops->leaf_ents_p(leaf);
- return be32_to_cpu(ents[leafhdr.count - 1].hashval);
+ return be32_to_cpu(leafhdr.ents[leafhdr.count - 1].hashval);
}

/*
@@ -580,7 +576,6 @@ xfs_dir2_leafn_lookup_for_addname(
xfs_dir2_db_t newdb; /* new data block number */
xfs_dir2_db_t newfdb; /* new free block number */
xfs_trans_t *tp; /* transaction pointer */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

dp = args->dp;
@@ -588,7 +583,6 @@ xfs_dir2_leafn_lookup_for_addname(
mp = dp->i_mount;
leaf = bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);

xfs_dir3_leaf_check(dp, bp);
ASSERT(leafhdr.count > 0);
@@ -612,7 +606,7 @@ xfs_dir2_leafn_lookup_for_addname(
/*
* Loop over leaf entries with the right hash value.
*/
- for (lep = &ents[index];
+ for (lep = &leafhdr.ents[index];
index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
lep++, index++) {
/*
@@ -732,7 +726,6 @@ xfs_dir2_leafn_lookup_for_entry(
xfs_dir2_db_t newdb; /* new data block number */
xfs_trans_t *tp; /* transaction pointer */
enum xfs_dacmp cmp; /* comparison result */
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir3_icleaf_hdr leafhdr;

dp = args->dp;
@@ -740,7 +733,6 @@ xfs_dir2_leafn_lookup_for_entry(
mp = dp->i_mount;
leaf = bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(mp, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);

xfs_dir3_leaf_check(dp, bp);
if (leafhdr.count <= 0) {
@@ -762,7 +754,7 @@ xfs_dir2_leafn_lookup_for_entry(
/*
* Loop over leaf entries with the right hash value.
*/
- for (lep = &ents[index];
+ for (lep = &leafhdr.ents[index];
index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval;
lep++, index++) {
/*
@@ -917,7 +909,7 @@ xfs_dir3_leafn_moveents(
if (start_d < dhdr->count) {
memmove(&dents[start_d + count], &dents[start_d],
(dhdr->count - start_d) * sizeof(xfs_dir2_leaf_entry_t));
- xfs_dir3_leaf_log_ents(args, bp_d, start_d + count,
+ xfs_dir3_leaf_log_ents(args, dhdr, bp_d, start_d + count,
count + dhdr->count - 1);
}
/*
@@ -939,7 +931,7 @@ xfs_dir3_leafn_moveents(
*/
memcpy(&dents[start_d], &sents[start_s],
count * sizeof(xfs_dir2_leaf_entry_t));
- xfs_dir3_leaf_log_ents(args, bp_d, start_d, start_d + count - 1);
+ xfs_dir3_leaf_log_ents(args, dhdr, bp_d, start_d, start_d + count - 1);

/*
* If there are source entries after the ones we copied,
@@ -948,7 +940,8 @@ xfs_dir3_leafn_moveents(
if (start_s + count < shdr->count) {
memmove(&sents[start_s], &sents[start_s + count],
count * sizeof(xfs_dir2_leaf_entry_t));
- xfs_dir3_leaf_log_ents(args, bp_s, start_s, start_s + count - 1);
+ xfs_dir3_leaf_log_ents(args, shdr, bp_s, start_s,
+ start_s + count - 1);
}

/*
@@ -979,8 +972,8 @@ xfs_dir2_leafn_order(

xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &hdr1, leaf1);
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &hdr2, leaf2);
- ents1 = dp->d_ops->leaf_ents_p(leaf1);
- ents2 = dp->d_ops->leaf_ents_p(leaf2);
+ ents1 = hdr1.ents;
+ ents2 = hdr2.ents;

if (hdr1.count > 0 && hdr2.count > 0 &&
(be32_to_cpu(ents2[0].hashval) < be32_to_cpu(ents1[0].hashval) ||
@@ -1032,8 +1025,8 @@ xfs_dir2_leafn_rebalance(
leaf2 = blk2->bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &hdr1, leaf1);
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &hdr2, leaf2);
- ents1 = dp->d_ops->leaf_ents_p(leaf1);
- ents2 = dp->d_ops->leaf_ents_p(leaf2);
+ ents1 = hdr1.ents;
+ ents2 = hdr2.ents;

oldsum = hdr1.count + hdr2.count;
#if defined(DEBUG) || defined(XFS_WARN)
@@ -1221,7 +1214,6 @@ xfs_dir2_leafn_remove(
xfs_trans_t *tp; /* transaction pointer */
struct xfs_dir2_data_free *bf; /* bestfree table */
struct xfs_dir3_icleaf_hdr leafhdr;
- struct xfs_dir2_leaf_entry *ents;

trace_xfs_dir2_leafn_remove(args, index);

@@ -1229,12 +1221,11 @@ xfs_dir2_leafn_remove(
tp = args->trans;
leaf = bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);

/*
* Point to the entry we're removing.
*/
- lep = &ents[index];
+ lep = &leafhdr.ents[index];

/*
* Extract the data block and offset from the entry.
@@ -1253,7 +1244,7 @@ xfs_dir2_leafn_remove(
xfs_dir3_leaf_log_header(args, bp);

lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR);
- xfs_dir3_leaf_log_ents(args, bp, index, index);
+ xfs_dir3_leaf_log_ents(args, &leafhdr, bp, index, index);

/*
* Make the data entry free. Keep track of the longest freespace
@@ -1350,7 +1341,7 @@ xfs_dir2_leafn_remove(
* to justify trying to join it with a neighbor.
*/
*rval = (dp->d_ops->leaf_hdr_size +
- (uint)sizeof(ents[0]) * (leafhdr.count - leafhdr.stale)) <
+ (uint)sizeof(leafhdr.ents) * (leafhdr.count - leafhdr.stale)) <
args->geo->magicpct;
return 0;
}
@@ -1451,7 +1442,7 @@ xfs_dir2_leafn_toosmall(
blk = &state->path.blk[state->path.active - 1];
leaf = blk->bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &leafhdr, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
+ ents = leafhdr.ents;
xfs_dir3_leaf_check(dp, blk->bp);

count = leafhdr.count - leafhdr.stale;
@@ -1514,7 +1505,7 @@ xfs_dir2_leafn_toosmall(

leaf = bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &hdr2, leaf);
- ents = dp->d_ops->leaf_ents_p(leaf);
+ ents = hdr2.ents;
count += hdr2.count - hdr2.stale;
bytes -= count * sizeof(ents[0]);

@@ -1578,8 +1569,8 @@ xfs_dir2_leafn_unbalance(

xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &savehdr, save_leaf);
xfs_dir2_leaf_hdr_from_disk(dp->i_mount, &drophdr, drop_leaf);
- sents = dp->d_ops->leaf_ents_p(save_leaf);
- dents = dp->d_ops->leaf_ents_p(drop_leaf);
+ sents = savehdr.ents;
+ dents = drophdr.ents;

/*
* If there are any stale leaf entries, take this opportunity
@@ -2161,8 +2152,6 @@ xfs_dir2_node_replace(
int i; /* btree level */
xfs_ino_t inum; /* new inode number */
int ftype; /* new file type */
- xfs_dir2_leaf_t *leaf; /* leaf structure */
- xfs_dir2_leaf_entry_t *lep; /* leaf entry being changed */
int rval; /* internal return value */
xfs_da_state_t *state; /* btree cursor */

@@ -2194,16 +2183,17 @@ xfs_dir2_node_replace(
* and locked it. But paranoia is good.
*/
if (rval == -EEXIST) {
- struct xfs_dir2_leaf_entry *ents;
+ struct xfs_dir3_icleaf_hdr leafhdr;
+
/*
* Find the leaf entry.
*/
blk = &state->path.blk[state->path.active - 1];
ASSERT(blk->magic == XFS_DIR2_LEAFN_MAGIC);
- leaf = blk->bp->b_addr;
- ents = args->dp->d_ops->leaf_ents_p(leaf);
- lep = &ents[blk->index];
ASSERT(state->extravalid);
+
+ xfs_dir2_leaf_hdr_from_disk(state->mp, &leafhdr,
+ blk->bp->b_addr);
/*
* Point to the data entry.
*/
@@ -2213,7 +2203,7 @@ xfs_dir2_node_replace(
dep = (xfs_dir2_data_entry_t *)
((char *)hdr +
xfs_dir2_dataptr_to_off(args->geo,
- be32_to_cpu(lep->address)));
+ be32_to_cpu(leafhdr.ents[blk->index].address)));
ASSERT(inum != be64_to_cpu(dep->inumber));
/*
* Fill in the new inode number and log the entry.
diff --git a/fs/xfs/libxfs/xfs_dir2_priv.h b/fs/xfs/libxfs/xfs_dir2_priv.h
index af96e3faefaf..1f068812c453 100644
--- a/fs/xfs/libxfs/xfs_dir2_priv.h
+++ b/fs/xfs/libxfs/xfs_dir2_priv.h
@@ -18,6 +18,12 @@ struct xfs_dir3_icleaf_hdr {
uint16_t magic;
uint16_t count;
uint16_t stale;
+
+ /*
+ * Pointer to the on-disk format entries, which are behind the
+ * variable size (v4 vs v5) header in the on-disk block.
+ */
+ struct xfs_dir2_leaf_entry *ents;
};

struct xfs_dir3_icfree_hdr {
@@ -85,7 +91,8 @@ extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr,
extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno,
struct xfs_buf **bpp, uint16_t magic);
extern void xfs_dir3_leaf_log_ents(struct xfs_da_args *args,
- struct xfs_buf *bp, int first, int last);
+ struct xfs_dir3_icleaf_hdr *hdr, struct xfs_buf *bp, int first,
+ int last);
extern void xfs_dir3_leaf_log_header(struct xfs_da_args *args,
struct xfs_buf *bp);
extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args);
diff --git a/fs/xfs/scrub/dir.c b/fs/xfs/scrub/dir.c
index 5b004d1f6bef..6754e1477661 100644
--- a/fs/xfs/scrub/dir.c
+++ b/fs/xfs/scrub/dir.c
@@ -195,14 +195,15 @@ xchk_dir_rec(
xfs_dir2_dataptr_t ptr;
xfs_dahash_t calc_hash;
xfs_dahash_t hash;
+ struct xfs_dir3_icleaf_hdr hdr;
unsigned int tag;
int error;

ASSERT(blk->magic == XFS_DIR2_LEAF1_MAGIC ||
blk->magic == XFS_DIR2_LEAFN_MAGIC);

- ent = (void *)ds->dargs.dp->d_ops->leaf_ents_p(blk->bp->b_addr) +
- (blk->index * sizeof(struct xfs_dir2_leaf_entry));
+ xfs_dir2_leaf_hdr_from_disk(mp, &hdr, blk->bp->b_addr);
+ ent = hdr.ents + blk->index;

/* Check the hash of the entry. */
error = xchk_da_btree_hash(ds, level, &ent->hashval);
@@ -481,7 +482,6 @@ xchk_directory_leaf1_bestfree(
xfs_dablk_t lblk)
{
struct xfs_dir3_icleaf_hdr leafhdr;
- struct xfs_dir2_leaf_entry *ents;
struct xfs_dir2_leaf_tail *ltp;
struct xfs_dir2_leaf *leaf;
struct xfs_buf *dbp;
@@ -505,7 +505,6 @@ xchk_directory_leaf1_bestfree(

leaf = bp->b_addr;
xfs_dir2_leaf_hdr_from_disk(sc->ip->i_mount, &leafhdr, leaf);
- ents = d_ops->leaf_ents_p(leaf);
ltp = xfs_dir2_leaf_tail_p(geo, leaf);
bestcount = be32_to_cpu(ltp->bestcount);
bestp = xfs_dir2_leaf_bests_p(ltp);
@@ -533,18 +532,19 @@ xchk_directory_leaf1_bestfree(
}

/* Leaves and bests don't overlap in leaf format. */
- if ((char *)&ents[leafhdr.count] > (char *)bestp) {
+ if ((char *)&leafhdr.ents[leafhdr.count] > (char *)bestp) {
xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
goto out;
}

/* Check hash value order, count stale entries. */
for (i = 0; i < leafhdr.count; i++) {
- hash = be32_to_cpu(ents[i].hashval);
+ hash = be32_to_cpu(leafhdr.ents[i].hashval);
if (i > 0 && lasthash > hash)
xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, lblk);
lasthash = hash;
- if (ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
+ if (leafhdr.ents[i].address ==
+ cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
stale++;
}
if (leafhdr.stale != stale)
--
2.20.1