diff options
author | 2019-11-08 14:58:05 -0800 | |
---|---|---|
committer | 2019-11-10 16:54:21 -0800 | |
commit | a84f3d5cb04f7dff1bf6904f0a05bc8df16137fb (patch) | |
tree | 99c8b71991efef1a63ad8102ad6d2d80795673bb /fs | |
parent | xfs: make the xfs_dir3_icfree_hdr available to xfs_dir2_node_addname_int (diff) | |
download | linux-a84f3d5cb04f7dff1bf6904f0a05bc8df16137fb.tar.gz linux-a84f3d5cb04f7dff1bf6904f0a05bc8df16137fb.tar.bz2 linux-a84f3d5cb04f7dff1bf6904f0a05bc8df16137fb.zip |
xfs: add a bests pointer to struct xfs_dir3_icfree_hdr
All but two callers of the ->free_bests_p dir operation already have a
struct xfs_dir3_icfree_hdr from a previous call to
xfs_dir2_free_hdr_from_disk at hand. Add a pointer to the bests to
struct xfs_dir3_icfree_hdr to clean up this pattern. To optimize this
pattern, pass the struct xfs_dir3_icfree_hdr to xfs_dir2_free_log_bests
instead of recalculating the pointer there.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/xfs/libxfs/xfs_da_format.c | 15 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_dir2.h | 1 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_dir2_leaf.c | 6 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_dir2_node.c | 97 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_dir2_priv.h | 6 | ||||
-rw-r--r-- | fs/xfs/scrub/dir.c | 6 |
6 files changed, 48 insertions, 83 deletions
diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c index b943d9443d55..7263b6d6a135 100644 --- a/fs/xfs/libxfs/xfs_da_format.c +++ b/fs/xfs/libxfs/xfs_da_format.c @@ -411,12 +411,6 @@ xfs_dir2_free_max_bests(struct xfs_da_geometry *geo) sizeof(xfs_dir2_data_off_t); } -static __be16 * -xfs_dir2_free_bests_p(struct xfs_dir2_free *free) -{ - return (__be16 *)((char *)free + sizeof(struct xfs_dir2_free_hdr)); -} - /* * Convert data space db to the corresponding free db. */ @@ -443,12 +437,6 @@ xfs_dir3_free_max_bests(struct xfs_da_geometry *geo) sizeof(xfs_dir2_data_off_t); } -static __be16 * -xfs_dir3_free_bests_p(struct xfs_dir2_free *free) -{ - return (__be16 *)((char *)free + sizeof(struct xfs_dir3_free_hdr)); -} - /* * Convert data space db to the corresponding free db. */ @@ -500,7 +488,6 @@ static const struct xfs_dir_ops xfs_dir2_ops = { .free_hdr_size = sizeof(struct xfs_dir2_free_hdr), .free_max_bests = xfs_dir2_free_max_bests, - .free_bests_p = xfs_dir2_free_bests_p, .db_to_fdb = xfs_dir2_db_to_fdb, .db_to_fdindex = xfs_dir2_db_to_fdindex, }; @@ -537,7 +524,6 @@ static const struct xfs_dir_ops xfs_dir2_ftype_ops = { .free_hdr_size = sizeof(struct xfs_dir2_free_hdr), .free_max_bests = xfs_dir2_free_max_bests, - .free_bests_p = xfs_dir2_free_bests_p, .db_to_fdb = xfs_dir2_db_to_fdb, .db_to_fdindex = xfs_dir2_db_to_fdindex, }; @@ -574,7 +560,6 @@ static const struct xfs_dir_ops xfs_dir3_ops = { .free_hdr_size = sizeof(struct xfs_dir3_free_hdr), .free_max_bests = xfs_dir3_free_max_bests, - .free_bests_p = xfs_dir3_free_bests_p, .db_to_fdb = xfs_dir3_db_to_fdb, .db_to_fdindex = xfs_dir3_db_to_fdindex, }; diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h index 613a78281d03..402f00326b64 100644 --- a/fs/xfs/libxfs/xfs_dir2.h +++ b/fs/xfs/libxfs/xfs_dir2.h @@ -74,7 +74,6 @@ struct xfs_dir_ops { int free_hdr_size; 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, xfs_dir2_db_t db); int (*db_to_fdindex)(struct xfs_da_geometry *geo, diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c index b435379ddaa2..bbbd7b96678a 100644 --- a/fs/xfs/libxfs/xfs_dir2_leaf.c +++ b/fs/xfs/libxfs/xfs_dir2_leaf.c @@ -1680,7 +1680,6 @@ xfs_dir2_node_to_leaf( int error; /* error return code */ struct xfs_buf *fbp; /* buffer for freespace block */ xfs_fileoff_t fo; /* freespace file offset */ - xfs_dir2_free_t *free; /* freespace structure */ struct xfs_buf *lbp; /* buffer for leaf block */ xfs_dir2_leaf_tail_t *ltp; /* tail of leaf structure */ xfs_dir2_leaf_t *leaf; /* leaf structure */ @@ -1749,8 +1748,7 @@ xfs_dir2_node_to_leaf( error = xfs_dir2_free_read(tp, dp, args->geo->freeblk, &fbp); if (error) return error; - free = fbp->b_addr; - xfs_dir2_free_hdr_from_disk(mp, &freehdr, free); + xfs_dir2_free_hdr_from_disk(mp, &freehdr, fbp->b_addr); ASSERT(!freehdr.firstdb); @@ -1784,7 +1782,7 @@ xfs_dir2_node_to_leaf( /* * Set up the leaf bests table. */ - memcpy(xfs_dir2_leaf_bests_p(ltp), dp->d_ops->free_bests_p(free), + memcpy(xfs_dir2_leaf_bests_p(ltp), freehdr.bests, freehdr.nvalid * sizeof(xfs_dir2_data_off_t)); xfs_dir2_leaf_hdr_to_disk(mp, leaf, &leafhdr); diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c index 6d67ceac48b7..78900ba3db71 100644 --- a/fs/xfs/libxfs/xfs_dir2_node.c +++ b/fs/xfs/libxfs/xfs_dir2_node.c @@ -233,6 +233,7 @@ xfs_dir2_free_hdr_from_disk( to->firstdb = be32_to_cpu(from3->hdr.firstdb); to->nvalid = be32_to_cpu(from3->hdr.nvalid); to->nused = be32_to_cpu(from3->hdr.nused); + to->bests = from3->bests; ASSERT(to->magic == XFS_DIR3_FREE_MAGIC); } else { @@ -240,6 +241,8 @@ xfs_dir2_free_hdr_from_disk( to->firstdb = be32_to_cpu(from->hdr.firstdb); to->nvalid = be32_to_cpu(from->hdr.nvalid); to->nused = be32_to_cpu(from->hdr.nused); + to->bests = from->bests; + ASSERT(to->magic == XFS_DIR2_FREE_MAGIC); } } @@ -338,21 +341,19 @@ xfs_dir3_free_get_buf( STATIC void xfs_dir2_free_log_bests( struct xfs_da_args *args, + struct xfs_dir3_icfree_hdr *hdr, struct xfs_buf *bp, int first, /* first entry to log */ int last) /* last entry to log */ { - xfs_dir2_free_t *free; /* freespace structure */ - __be16 *bests; + struct xfs_dir2_free *free = bp->b_addr; - free = bp->b_addr; - bests = args->dp->d_ops->free_bests_p(free); ASSERT(free->hdr.magic == cpu_to_be32(XFS_DIR2_FREE_MAGIC) || free->hdr.magic == cpu_to_be32(XFS_DIR3_FREE_MAGIC)); xfs_trans_log_buf(args->trans, bp, - (uint)((char *)&bests[first] - (char *)free), - (uint)((char *)&bests[last] - (char *)free + - sizeof(bests[0]) - 1)); + (char *)&hdr->bests[first] - (char *)free, + (char *)&hdr->bests[last] - (char *)free + + sizeof(hdr->bests[0]) - 1); } /* @@ -388,14 +389,12 @@ xfs_dir2_leaf_to_node( int error; /* error return value */ struct xfs_buf *fbp; /* freespace buffer */ xfs_dir2_db_t fdb; /* freespace block number */ - xfs_dir2_free_t *free; /* freespace structure */ __be16 *from; /* pointer to freespace entry */ int i; /* leaf freespace index */ xfs_dir2_leaf_t *leaf; /* leaf structure */ xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ int n; /* count of live freespc ents */ xfs_dir2_data_off_t off; /* freespace entry value */ - __be16 *to; /* pointer to freespace entry */ xfs_trans_t *tp; /* transaction pointer */ struct xfs_dir3_icfree_hdr freehdr; @@ -417,8 +416,7 @@ xfs_dir2_leaf_to_node( if (error) return error; - free = fbp->b_addr; - xfs_dir2_free_hdr_from_disk(dp->i_mount, &freehdr, free); + xfs_dir2_free_hdr_from_disk(dp->i_mount, &freehdr, fbp->b_addr); leaf = lbp->b_addr; ltp = xfs_dir2_leaf_tail_p(args->geo, leaf); if (be32_to_cpu(ltp->bestcount) > @@ -432,11 +430,11 @@ xfs_dir2_leaf_to_node( * Count active entries. */ from = xfs_dir2_leaf_bests_p(ltp); - to = dp->d_ops->free_bests_p(free); - for (i = n = 0; i < be32_to_cpu(ltp->bestcount); i++, from++, to++) { - if ((off = be16_to_cpu(*from)) != NULLDATAOFF) + for (i = n = 0; i < be32_to_cpu(ltp->bestcount); i++, from++) { + off = be16_to_cpu(*from); + if (off != NULLDATAOFF) n++; - *to = cpu_to_be16(off); + freehdr.bests[i] = cpu_to_be16(off); } /* @@ -446,7 +444,7 @@ xfs_dir2_leaf_to_node( freehdr.nvalid = be32_to_cpu(ltp->bestcount); 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_bests(args, &freehdr, fbp, 0, freehdr.nvalid - 1); xfs_dir2_free_log_header(args, fbp); /* @@ -677,7 +675,7 @@ xfs_dir2_leafn_lookup_for_addname( * in hand, take a look at it. */ if (newdb != curdb) { - __be16 *bests; + struct xfs_dir3_icfree_hdr freehdr; curdb = newdb; /* @@ -712,8 +710,9 @@ xfs_dir2_leafn_lookup_for_addname( /* * If it has room, return it. */ - bests = dp->d_ops->free_bests_p(free); - if (unlikely(bests[fi] == cpu_to_be16(NULLDATAOFF))) { + xfs_dir2_free_hdr_from_disk(mp, &freehdr, free); + if (unlikely( + freehdr.bests[fi] == cpu_to_be16(NULLDATAOFF))) { XFS_ERROR_REPORT("xfs_dir2_leafn_lookup_int", XFS_ERRLEVEL_LOW, mp); if (curfdb != newfdb) @@ -721,7 +720,7 @@ xfs_dir2_leafn_lookup_for_addname( return -EFSCORRUPTED; } curfdb = newfdb; - if (be16_to_cpu(bests[fi]) >= length) + if (be16_to_cpu(freehdr.bests[fi]) >= length) goto out; } } @@ -1168,19 +1167,17 @@ xfs_dir3_data_block_free( int longest) { int logfree = 0; - __be16 *bests; struct xfs_dir3_icfree_hdr freehdr; struct xfs_inode *dp = args->dp; xfs_dir2_free_hdr_from_disk(dp->i_mount, &freehdr, free); - bests = dp->d_ops->free_bests_p(free); if (hdr) { /* * Data block is not empty, just set the free entry to the new * value. */ - bests[findex] = cpu_to_be16(longest); - xfs_dir2_free_log_bests(args, fbp, findex, findex); + freehdr.bests[findex] = cpu_to_be16(longest); + xfs_dir2_free_log_bests(args, &freehdr, fbp, findex, findex); return 0; } @@ -1196,14 +1193,14 @@ xfs_dir3_data_block_free( int i; /* free entry index */ for (i = findex - 1; i >= 0; i--) { - if (bests[i] != cpu_to_be16(NULLDATAOFF)) + if (freehdr.bests[i] != cpu_to_be16(NULLDATAOFF)) break; } freehdr.nvalid = i + 1; logfree = 0; } else { /* Not the last entry, just punch it out. */ - bests[findex] = cpu_to_be16(NULLDATAOFF); + freehdr.bests[findex] = cpu_to_be16(NULLDATAOFF); logfree = 1; } @@ -1232,7 +1229,7 @@ xfs_dir3_data_block_free( /* Log the free entry that changed, unless we got rid of it. */ if (logfree) - xfs_dir2_free_log_bests(args, fbp, findex, findex); + xfs_dir2_free_log_bests(args, &freehdr, fbp, findex, findex); return 0; } @@ -1673,11 +1670,9 @@ xfs_dir2_node_add_datablk( struct xfs_trans *tp = args->trans; struct xfs_mount *mp = dp->i_mount; struct xfs_dir2_data_free *bf; - struct xfs_dir2_free *free = NULL; xfs_dir2_db_t fbno; struct xfs_buf *fbp; struct xfs_buf *dbp; - __be16 *bests = NULL; int error; /* Not allowed to allocate, return failure. */ @@ -1733,18 +1728,14 @@ xfs_dir2_node_add_datablk( error = xfs_dir3_free_get_buf(args, fbno, &fbp); if (error) return error; - free = fbp->b_addr; - bests = dp->d_ops->free_bests_p(free); - xfs_dir2_free_hdr_from_disk(mp, hdr, free); + xfs_dir2_free_hdr_from_disk(mp, hdr, fbp->b_addr); /* Remember the first slot as our empty slot. */ hdr->firstdb = (fbno - xfs_dir2_byte_to_db(args->geo, XFS_DIR2_FREE_OFFSET)) * dp->d_ops->free_max_bests(args->geo); } else { - free = fbp->b_addr; - bests = dp->d_ops->free_bests_p(free); - xfs_dir2_free_hdr_from_disk(mp, hdr, free); + xfs_dir2_free_hdr_from_disk(mp, hdr, fbp->b_addr); } /* Set the freespace block index from the data block number. */ @@ -1754,14 +1745,14 @@ xfs_dir2_node_add_datablk( if (*findex >= hdr->nvalid) { ASSERT(*findex < dp->d_ops->free_max_bests(args->geo)); hdr->nvalid = *findex + 1; - bests[*findex] = cpu_to_be16(NULLDATAOFF); + hdr->bests[*findex] = cpu_to_be16(NULLDATAOFF); } /* * If this entry was for an empty data block (this should always be * true) then update the header. */ - if (bests[*findex] == cpu_to_be16(NULLDATAOFF)) { + if (hdr->bests[*findex] == cpu_to_be16(NULLDATAOFF)) { hdr->nused++; xfs_dir2_free_hdr_to_disk(mp, fbp->b_addr, hdr); xfs_dir2_free_log_header(args, fbp); @@ -1769,7 +1760,7 @@ xfs_dir2_node_add_datablk( /* Update the freespace value for the new block in the table. */ bf = dp->d_ops->data_bestfree_p(dbp->b_addr); - bests[*findex] = bf[0].length; + hdr->bests[*findex] = bf[0].length; *dbpp = dbp; *fbpp = fbp; @@ -1786,7 +1777,6 @@ xfs_dir2_node_find_freeblk( int *findexp, int length) { - struct xfs_dir2_free *free = NULL; struct xfs_inode *dp = args->dp; struct xfs_trans *tp = args->trans; struct xfs_buf *fbp = NULL; @@ -1796,7 +1786,6 @@ xfs_dir2_node_find_freeblk( xfs_dir2_db_t dbno = -1; xfs_dir2_db_t fbno; xfs_fileoff_t fo; - __be16 *bests = NULL; int findex = 0; int error; @@ -1807,16 +1796,13 @@ xfs_dir2_node_find_freeblk( */ if (fblk) { fbp = fblk->bp; - free = fbp->b_addr; findex = fblk->index; + xfs_dir2_free_hdr_from_disk(dp->i_mount, hdr, fbp->b_addr); if (findex >= 0) { /* caller already found the freespace for us. */ - bests = dp->d_ops->free_bests_p(free); - xfs_dir2_free_hdr_from_disk(dp->i_mount, hdr, free); - ASSERT(findex < hdr->nvalid); - ASSERT(be16_to_cpu(bests[findex]) != NULLDATAOFF); - ASSERT(be16_to_cpu(bests[findex]) >= length); + ASSERT(be16_to_cpu(hdr->bests[findex]) != NULLDATAOFF); + ASSERT(be16_to_cpu(hdr->bests[findex]) >= length); dbno = hdr->firstdb + findex; goto found_block; } @@ -1859,14 +1845,12 @@ xfs_dir2_node_find_freeblk( if (!fbp) continue; - free = fbp->b_addr; - bests = dp->d_ops->free_bests_p(free); - xfs_dir2_free_hdr_from_disk(dp->i_mount, hdr, free); + xfs_dir2_free_hdr_from_disk(dp->i_mount, hdr, fbp->b_addr); /* Scan the free entry array for a large enough free space. */ for (findex = hdr->nvalid - 1; findex >= 0; findex--) { - if (be16_to_cpu(bests[findex]) != NULLDATAOFF && - be16_to_cpu(bests[findex]) >= length) { + if (be16_to_cpu(hdr->bests[findex]) != NULLDATAOFF && + be16_to_cpu(hdr->bests[findex]) >= length) { dbno = hdr->firstdb + findex; goto found_block; } @@ -1883,7 +1867,6 @@ found_block: return 0; } - /* * Add the data entry for a node-format directory name addition. * The leaf entry is added in xfs_dir2_leafn_add. @@ -1898,7 +1881,6 @@ xfs_dir2_node_addname_int( struct xfs_dir2_data_entry *dep; /* data entry pointer */ struct xfs_dir2_data_hdr *hdr; /* data block header */ struct xfs_dir2_data_free *bf; - struct xfs_dir2_free *free = NULL; /* freespace block structure */ struct xfs_trans *tp = args->trans; struct xfs_inode *dp = args->dp; struct xfs_dir3_icfree_hdr freehdr; @@ -1913,7 +1895,6 @@ xfs_dir2_node_addname_int( int needlog = 0; /* need to log data header */ int needscan = 0; /* need to rescan data frees */ __be16 *tagp; /* data entry tag pointer */ - __be16 *bests; length = dp->d_ops->data_entsize(args->namelen); error = xfs_dir2_node_find_freeblk(args, fblk, &dbno, &fbp, &freehdr, @@ -1984,16 +1965,14 @@ xfs_dir2_node_addname_int( xfs_dir2_data_log_header(args, dbp); /* If the freespace block entry is now wrong, update it. */ - free = fbp->b_addr; - bests = dp->d_ops->free_bests_p(free); - if (bests[findex] != bf[0].length) { - bests[findex] = bf[0].length; + if (freehdr.bests[findex] != bf[0].length) { + freehdr.bests[findex] = bf[0].length; logfree = 1; } /* Log the freespace entry if needed. */ if (logfree) - xfs_dir2_free_log_bests(args, fbp, findex, findex); + xfs_dir2_free_log_bests(args, &freehdr, fbp, findex, findex); /* Return the data block and offset in args. */ args->blkno = (xfs_dablk_t)dbno; diff --git a/fs/xfs/libxfs/xfs_dir2_priv.h b/fs/xfs/libxfs/xfs_dir2_priv.h index 2c3370a3c010..9128f7aae0be 100644 --- a/fs/xfs/libxfs/xfs_dir2_priv.h +++ b/fs/xfs/libxfs/xfs_dir2_priv.h @@ -31,6 +31,12 @@ struct xfs_dir3_icfree_hdr { uint32_t firstdb; uint32_t nvalid; uint32_t nused; + + /* + * Pointer to the on-disk format entries, which are behind the + * variable size (v4 vs v5) header in the on-disk block. + */ + __be16 *bests; }; /* xfs_dir2.c */ diff --git a/fs/xfs/scrub/dir.c b/fs/xfs/scrub/dir.c index 1314a9159156..b474c6f1926f 100644 --- a/fs/xfs/scrub/dir.c +++ b/fs/xfs/scrub/dir.c @@ -583,7 +583,6 @@ xchk_directory_free_bestfree( struct xfs_dir3_icfree_hdr freehdr; struct xfs_buf *dbp; struct xfs_buf *bp; - __be16 *bestp; __u16 best; unsigned int stale = 0; int i; @@ -604,9 +603,8 @@ xchk_directory_free_bestfree( /* Check all the entries. */ xfs_dir2_free_hdr_from_disk(sc->ip->i_mount, &freehdr, bp->b_addr); - bestp = sc->ip->d_ops->free_bests_p(bp->b_addr); - for (i = 0; i < freehdr.nvalid; i++, bestp++) { - best = be16_to_cpu(*bestp); + for (i = 0; i < freehdr.nvalid; i++) { + best = be16_to_cpu(freehdr.bests[i]); if (best == NULLDATAOFF) { stale++; continue; |