diff options
| -rw-r--r-- | fs/xfs/xfs_itable.c | 119 |
1 files changed, 69 insertions, 50 deletions
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index b50816789f2b..32cf52ee33bc 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -203,6 +203,63 @@ xfs_bulkstat_ichunk_ra( blk_finish_plug(&plug); } +/* + * Lookup the inode chunk that the given inode lives in and then get the record + * if we found the chunk. If the inode was not the last in the chunk and there + * are some left allocated, update the data for the pointed-to record as well as + * return the count of grabbed inodes. + */ +STATIC int +xfs_bulkstat_grab_ichunk( + struct xfs_btree_cur *cur, /* btree cursor */ + xfs_agino_t agino, /* starting inode of chunk */ + int *icount,/* return # of inodes grabbed */ + struct xfs_inobt_rec_incore *irec) /* btree record */ +{ + int idx; /* index into inode chunk */ + int stat; + int error = 0; + + /* Lookup the inode chunk that this inode lives in */ + error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, &stat); + if (error) + return error; + if (!stat) { + *icount = 0; + return error; + } + + /* Get the record, should always work */ + error = xfs_inobt_get_rec(cur, irec, &stat); + if (error) + return error; + XFS_WANT_CORRUPTED_RETURN(stat == 1); + + /* Check if the record contains the inode in request */ + if (irec->ir_startino + XFS_INODES_PER_CHUNK <= agino) + return -EINVAL; + + idx = agino - irec->ir_startino + 1; + if (idx < XFS_INODES_PER_CHUNK && + (xfs_inobt_maskn(idx, XFS_INODES_PER_CHUNK - idx) & ~irec->ir_free)) { + int i; + + /* We got a right chunk with some left inodes allocated at it. + * Grab the chunk record. Mark all the uninteresting inodes + * free -- because they're before our start point. + */ + for (i = 0; i < idx; i++) { + if (XFS_INOBT_MASK(i) & ~irec->ir_free) + irec->ir_freecount++; + } + + irec->ir_free |= xfs_inobt_maskn(0, idx); + *icount = XFS_INODES_PER_CHUNK - irec->ir_freecount; + } + + return 0; +} + #define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size) /* @@ -290,67 +347,29 @@ xfs_bulkstat( irbp = irbuf; irbufend = irbuf + nirbuf; end_of_ag = 0; - /* - * If we're returning in the middle of an allocation group, - * we need to get the remainder of the chunk we're in. - */ + icount = 0; if (agino > 0) { - xfs_inobt_rec_incore_t r; - /* - * Lookup the inode chunk that this inode lives in. + * In the middle of an allocation group, we need to get + * the remainder of the chunk we're in. */ - error = xfs_inobt_lookup(cur, agino, XFS_LOOKUP_LE, - &tmp); - if (!error && /* no I/O error */ - tmp && /* lookup succeeded */ - /* got the record, should always work */ - !(error = xfs_inobt_get_rec(cur, &r, &i)) && - i == 1 && - /* this is the right chunk */ - agino < r.ir_startino + XFS_INODES_PER_CHUNK && - /* lastino was not last in chunk */ - (chunkidx = agino - r.ir_startino + 1) < - XFS_INODES_PER_CHUNK && - /* there are some left allocated */ - xfs_inobt_maskn(chunkidx, - XFS_INODES_PER_CHUNK - chunkidx) & - ~r.ir_free) { - /* - * Grab the chunk record. Mark all the - * uninteresting inodes (because they're - * before our start point) free. - */ - for (i = 0; i < chunkidx; i++) { - if (XFS_INOBT_MASK(i) & ~r.ir_free) - r.ir_freecount++; - } - r.ir_free |= xfs_inobt_maskn(0, chunkidx); + struct xfs_inobt_rec_incore r; + + error = xfs_bulkstat_grab_ichunk(cur, agino, &icount, &r); + if (error) + break; + if (icount) { irbp->ir_startino = r.ir_startino; irbp->ir_freecount = r.ir_freecount; irbp->ir_free = r.ir_free; irbp++; agino = r.ir_startino + XFS_INODES_PER_CHUNK; - icount = XFS_INODES_PER_CHUNK - r.ir_freecount; - } else { - /* - * If any of those tests failed, bump the - * inode number (just in case). - */ - agino++; - icount = 0; } - /* - * In any case, increment to the next record. - */ - if (!error) - error = xfs_btree_increment(cur, 0, &tmp); + /* Increment to the next record */ + error = xfs_btree_increment(cur, 0, &tmp); } else { - /* - * Start of ag. Lookup the first inode chunk. - */ + /* Start of ag. Lookup the first inode chunk */ error = xfs_inobt_lookup(cur, 0, XFS_LOOKUP_GE, &tmp); - icount = 0; } if (error) break; |