#include "xfs_rtgroup.h"
#include "xfs_bmap.h"
#include "xfs_health.h"
+#include "xfs_buf_mem.h"
+#include "xfs_btree_mem.h"
static struct kmem_cache *xfs_rtrmapbt_cur_cache;
return cur;
}
+#ifdef CONFIG_XFS_BTREE_IN_MEM
+/*
+ * Validate an in-memory realtime rmap btree block. Callers are allowed to
+ * generate an in-memory btree even if the ondisk feature is not enabled.
+ */
+static xfs_failaddr_t
+xfs_rtrmapbt_mem_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_mount *mp = bp->b_mount;
+ struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
+ xfs_failaddr_t fa;
+ unsigned int level;
+ unsigned int maxrecs;
+
+ if (!xfs_verify_magic(bp, block->bb_magic))
+ return __this_address;
+
+ fa = xfs_btree_fsblock_v5hdr_verify(bp, XFS_RMAP_OWN_UNKNOWN);
+ if (fa)
+ return fa;
+
+ level = be16_to_cpu(block->bb_level);
+ if (xfs_has_rmapbt(mp)) {
+ if (level >= mp->m_rtrmap_maxlevels)
+ return __this_address;
+ } else {
+ if (level >= xfs_rtrmapbt_maxlevels_ondisk())
+ return __this_address;
+ }
+
+ maxrecs = xfs_rtrmapbt_maxrecs(mp, XFBNO_BLOCKSIZE, level == 0);
+ return xfs_btree_memblock_verify(bp, maxrecs);
+}
+
+static void
+xfs_rtrmapbt_mem_rw_verify(
+ struct xfs_buf *bp)
+{
+ xfs_failaddr_t fa = xfs_rtrmapbt_mem_verify(bp);
+
+ if (fa)
+ xfs_verifier_error(bp, -EFSCORRUPTED, fa);
+}
+
+/* skip crc checks on in-memory btrees to save time */
+static const struct xfs_buf_ops xfs_rtrmapbt_mem_buf_ops = {
+ .name = "xfs_rtrmapbt_mem",
+ .magic = { 0, cpu_to_be32(XFS_RTRMAP_CRC_MAGIC) },
+ .verify_read = xfs_rtrmapbt_mem_rw_verify,
+ .verify_write = xfs_rtrmapbt_mem_rw_verify,
+ .verify_struct = xfs_rtrmapbt_mem_verify,
+};
+
+const struct xfs_btree_ops xfs_rtrmapbt_mem_ops = {
+ .type = XFS_BTREE_TYPE_MEM,
+ .geom_flags = XFS_BTGEO_OVERLAPPING,
+
+ .rec_len = sizeof(struct xfs_rmap_rec),
+ /* Overlapping btree; 2 keys per pointer. */
+ .key_len = 2 * sizeof(struct xfs_rmap_key),
+ .ptr_len = XFS_BTREE_LONG_PTR_LEN,
+
+ .lru_refs = XFS_RMAP_BTREE_REF,
+ .statoff = XFS_STATS_CALC_INDEX(xs_rtrmap_mem_2),
+
+ .dup_cursor = xfbtree_dup_cursor,
+ .set_root = xfbtree_set_root,
+ .alloc_block = xfbtree_alloc_block,
+ .free_block = xfbtree_free_block,
+ .get_minrecs = xfbtree_get_minrecs,
+ .get_maxrecs = xfbtree_get_maxrecs,
+ .init_key_from_rec = xfs_rtrmapbt_init_key_from_rec,
+ .init_high_key_from_rec = xfs_rtrmapbt_init_high_key_from_rec,
+ .init_rec_from_cur = xfs_rtrmapbt_init_rec_from_cur,
+ .init_ptr_from_cur = xfbtree_init_ptr_from_cur,
+ .key_diff = xfs_rtrmapbt_key_diff,
+ .buf_ops = &xfs_rtrmapbt_mem_buf_ops,
+ .diff_two_keys = xfs_rtrmapbt_diff_two_keys,
+ .keys_inorder = xfs_rtrmapbt_keys_inorder,
+ .recs_inorder = xfs_rtrmapbt_recs_inorder,
+ .keys_contiguous = xfs_rtrmapbt_keys_contiguous,
+};
+
+/* Create a cursor for an in-memory btree. */
+struct xfs_btree_cur *
+xfs_rtrmapbt_mem_cursor(
+ struct xfs_rtgroup *rtg,
+ struct xfs_trans *tp,
+ struct xfbtree *xfbt)
+{
+ struct xfs_mount *mp = rtg_mount(rtg);
+ struct xfs_btree_cur *cur;
+
+ cur = xfs_btree_alloc_cursor(mp, tp, &xfs_rtrmapbt_mem_ops,
+ mp->m_rtrmap_maxlevels, xfs_rtrmapbt_cur_cache);
+ cur->bc_mem.xfbtree = xfbt;
+ cur->bc_nlevels = xfbt->nlevels;
+ cur->bc_group = xfs_group_hold(&rtg->rtg_group);
+ return cur;
+}
+
+/* Create an in-memory realtime rmap btree. */
+int
+xfs_rtrmapbt_mem_init(
+ struct xfs_mount *mp,
+ struct xfbtree *xfbt,
+ struct xfs_buftarg *btp,
+ xfs_rgnumber_t rgno)
+{
+ xfbt->owner = rgno;
+ return xfbtree_init(mp, xfbt, btp, &xfs_rtrmapbt_mem_ops);
+}
+#endif /* CONFIG_XFS_BTREE_IN_MEM */
+
/*
* Install a new rt reverse mapping btree root. Caller is responsible for
* invalidating and freeing the old btree blocks.
#include "xfs_defer.h"
#include "xfs_btree.h"
#include "xfs_btree_staging.h"
+#include "xfs_buf_mem.h"
+#include "xfs_btree_mem.h"
#include "xfs_bit.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
* We use the 'xrep_rtrmap' prefix for all the rmap functions.
*/
-/*
- * Packed rmap record. The UNWRITTEN flags are hidden in the upper bits of
- * offset, just like the on-disk record.
- */
-struct xrep_rtrmap_extent {
- xfs_rgblock_t startblock;
- xfs_extlen_t blockcount;
- uint64_t owner;
- uint64_t offset;
-} __packed;
-
/* Context for collecting rmaps */
struct xrep_rtrmap {
/* new rtrmapbt information */
struct xrep_newbt new_btree;
/* rmap records generated from primary metadata */
- struct xfarray *rtrmap_records;
+ struct xfbtree rtrmap_btree;
struct xfs_scrub *sc;
/* inode scan cursor */
struct xchk_iscan iscan;
- /* get_records()'s position in the free space record array. */
- xfarray_idx_t array_cur;
+ /* in-memory btree cursor for the ->get_blocks walk */
+ struct xfs_btree_cur *mcur;
+
+ /* Number of records we're staging in the new btree. */
+ uint64_t nr_records;
};
/* Set us up to repair rt reverse mapping btrees. */
struct xfs_scrub *sc)
{
struct xrep_rtrmap *rr;
+ char *descr;
+ int error;
+
+ descr = xchk_xfile_rtgroup_descr(sc, "reverse mapping records");
+ error = xrep_setup_xfbtree(sc, descr);
+ kfree(descr);
+ if (error)
+ return error;
rr = kzalloc(sizeof(struct xrep_rtrmap), XCHK_GFP_FLAGS);
if (!rr)
uint64_t offset,
unsigned int flags)
{
- struct xrep_rtrmap_extent rre = {
- .startblock = startblock,
- .blockcount = blockcount,
- .owner = owner,
- };
struct xfs_rmap_irec rmap = {
.rm_startblock = startblock,
.rm_blockcount = blockcount,
.rm_flags = flags,
};
struct xfs_scrub *sc = rr->sc;
+ struct xfs_btree_cur *mcur;
int error = 0;
if (xchk_should_terminate(sc, &error))
trace_xrep_rtrmap_found(sc->mp, &rmap);
- rre.offset = xfs_rmap_irec_offset_pack(&rmap);
- return xfarray_append(rr->rtrmap_records, &rre);
+ /* Add entry to in-memory btree. */
+ mcur = xfs_rtrmapbt_mem_cursor(sc->sr.rtg, sc->tp, &rr->rtrmap_btree);
+ error = xfs_rmap_map_raw(mcur, &rmap);
+ xfs_btree_del_cursor(mcur, error);
+ if (error)
+ goto out_cancel;
+
+ return xfbtree_trans_commit(&rr->rtrmap_btree, sc->tp);
+
+out_cancel:
+ xfbtree_trans_cancel(&rr->rtrmap_btree, sc->tp);
+ return error;
}
/* Finding all file and bmbt extents. */
return error;
}
+/* Count and check all collected records. */
+STATIC int
+xrep_rtrmap_check_record(
+ struct xfs_btree_cur *cur,
+ const struct xfs_rmap_irec *rec,
+ void *priv)
+{
+ struct xrep_rtrmap *rr = priv;
+ int error;
+
+ error = xrep_rtrmap_check_mapping(rr->sc, rec);
+ if (error)
+ return error;
+
+ rr->nr_records++;
+ return 0;
+}
+
/* Generate all the reverse-mappings for the realtime device. */
STATIC int
xrep_rtrmap_find_rmaps(
struct xfs_scrub *sc = rr->sc;
struct xfs_perag *pag = NULL;
struct xfs_inode *ip;
+ struct xfs_btree_cur *mcur;
int error;
/* Generate rmaps for the realtime superblock */
}
}
- return 0;
+ /*
+ * Now that we have everything locked again, we need to count the
+ * number of rmap records stashed in the btree. This should reflect
+ * all actively-owned rt files in the filesystem. At the same time,
+ * check all our records before we start building a new btree, which
+ * requires the rtbitmap lock.
+ */
+ mcur = xfs_rtrmapbt_mem_cursor(rr->sc->sr.rtg, NULL, &rr->rtrmap_btree);
+ rr->nr_records = 0;
+ error = xfs_rmap_query_all(mcur, xrep_rtrmap_check_record, rr);
+ xfs_btree_del_cursor(mcur, error);
+
+ return error;
}
/* Building the new rtrmap btree. */
unsigned int nr_wanted,
void *priv)
{
- struct xrep_rtrmap_extent rec;
- struct xfs_rmap_irec *irec = &cur->bc_rec.r;
struct xrep_rtrmap *rr = priv;
union xfs_btree_rec *block_rec;
unsigned int loaded;
int error;
for (loaded = 0; loaded < nr_wanted; loaded++, idx++) {
- error = xfarray_load_next(rr->rtrmap_records, &rr->array_cur,
- &rec);
+ int stat = 0;
+
+ error = xfs_btree_increment(rr->mcur, 0, &stat);
if (error)
return error;
-
- irec->rm_startblock = rec.startblock;
- irec->rm_blockcount = rec.blockcount;
- irec->rm_owner = rec.owner;
-
- if (xfs_rmap_irec_offset_unpack(rec.offset, irec) != NULL)
+ if (!stat)
return -EFSCORRUPTED;
- error = xrep_rtrmap_check_mapping(rr->sc, irec);
+ error = xfs_rmap_get_rec(rr->mcur, &cur->bc_rec.r, &stat);
if (error)
return error;
+ if (!stat)
+ return -EFSCORRUPTED;
block_rec = xfs_btree_rec_addr(cur, idx, block);
cur->bc_ops->init_rec_from_cur(cur, block_rec);
struct xfs_scrub *sc = rr->sc;
struct xfs_rtgroup *rtg = sc->sr.rtg;
struct xfs_btree_cur *rmap_cur;
- uint64_t nr_records;
int error;
/*
rmap_cur = xfs_rtrmapbt_init_cursor(NULL, rtg);
xfs_btree_stage_ifakeroot(rmap_cur, &rr->new_btree.ifake);
- nr_records = xfarray_length(rr->rtrmap_records);
-
/* Compute how many blocks we'll need for the rmaps collected. */
error = xfs_btree_bload_compute_geometry(rmap_cur,
- &rr->new_btree.bload, nr_records);
+ &rr->new_btree.bload, rr->nr_records);
if (error)
goto err_cur;
if (error)
goto err_cur;
+ /*
+ * Create a cursor to the in-memory btree so that we can bulk load the
+ * new btree.
+ */
+ rr->mcur = xfs_rtrmapbt_mem_cursor(sc->sr.rtg, NULL, &rr->rtrmap_btree);
+ error = xfs_btree_goto_left_edge(rr->mcur);
+ if (error)
+ goto err_mcur;
+
/* Add all observed rmap records. */
rr->new_btree.ifake.if_fork->if_format = XFS_DINODE_FMT_RMAP;
- rr->array_cur = XFARRAY_CURSOR_INIT;
error = xfs_btree_bload(rmap_cur, &rr->new_btree.bload, rr);
if (error)
- goto err_cur;
+ goto err_mcur;
/*
* Install the new rtrmap btree in the inode. After this point the old
xfs_rtrmapbt_commit_staged_btree(rmap_cur, sc->tp);
xrep_inode_set_nblocks(rr->sc, rr->new_btree.ifake.if_blocks);
xfs_btree_del_cursor(rmap_cur, 0);
+ xfs_btree_del_cursor(rr->mcur, 0);
+ rr->mcur = NULL;
+
+ /*
+ * Now that we've written the new btree to disk, we don't need to keep
+ * updating the in-memory btree. Abort the scan to stop live updates.
+ */
+ xchk_iscan_abort(&rr->iscan);
/* Dispose of any unused blocks and the accounting information. */
error = xrep_newbt_commit(&rr->new_btree);
return xrep_roll_trans(sc);
+err_mcur:
+ xfs_btree_del_cursor(rr->mcur, error);
err_cur:
xfs_btree_del_cursor(rmap_cur, error);
xrep_newbt_cancel(&rr->new_btree);
struct xrep_rtrmap *rr)
{
struct xfs_scrub *sc = rr->sc;
- char *descr;
int error;
xfsb_bitmap_init(&rr->old_rtrmapbt_blocks);
/* Set up some storage */
- descr = xchk_xfile_rtgroup_descr(sc, "reverse mapping records");
- error = xfarray_create(descr, 0, sizeof(struct xrep_rtrmap_extent),
- &rr->rtrmap_records);
- kfree(descr);
+ error = xfs_rtrmapbt_mem_init(sc->mp, &rr->rtrmap_btree, sc->xmbtp,
+ rtg_rgno(sc->sr.rtg));
if (error)
goto out_bitmap;
struct xrep_rtrmap *rr)
{
xchk_iscan_teardown(&rr->iscan);
- xfarray_destroy(rr->rtrmap_records);
+ xfbtree_destroy(&rr->rtrmap_btree);
xfsb_bitmap_destroy(&rr->old_rtrmapbt_blocks);
}
projects / users / hch / xfs.git / commitdiff