diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c index 8d6a4fe4228c..a3fe4e5b1cdd 100644 --- a/fs/xfs/libxfs/xfs_ialloc.c +++ b/fs/xfs/libxfs/xfs_ialloc.c @@ -2511,43 +2511,37 @@ xfs_imap( * inodes in stale state on disk. Hence we have to do a btree lookup * in all cases where an untrusted inode number is passed. */ - if (flags & XFS_IGET_UNTRUSTED) { - error = xfs_imap_lookup(pag, tp, agino, agbno, - &chunk_agbno, &offset_agbno, flags); - if (error) - return error; - goto out_map; + if (!(flags & XFS_IGET_UNTRUSTED)) { + /* + * If the inode cluster size is the same or smaller than the + * blocksize, get to the buffer by simple arithmetics. + */ + if (M_IGEO(mp)->blocks_per_cluster == 1) { + cluster_agbno = agbno; + offset = XFS_INO_TO_OFFSET(mp, ino); + ASSERT(offset < mp->m_sb.sb_inopblock); + goto out; + } + + /* + * If the inode chunks are aligned, use simple maths to find the + * location. + */ + if (M_IGEO(mp)->inoalign_mask) { + offset_agbno = agbno & M_IGEO(mp)->inoalign_mask; + chunk_agbno = agbno - offset_agbno; + goto out_map; + } + + /* + * Otherwise we have to do a btree lookup to find the location. + */ } - /* - * If the inode cluster size is the same as the blocksize or - * smaller we get to the buffer by simple arithmetics. - */ - if (M_IGEO(mp)->blocks_per_cluster == 1) { - offset = XFS_INO_TO_OFFSET(mp, ino); - ASSERT(offset < mp->m_sb.sb_inopblock); - - imap->im_blkno = xfs_agbno_to_daddr(pag, agbno); - imap->im_len = XFS_FSB_TO_BB(mp, 1); - imap->im_boffset = (unsigned short)(offset << - mp->m_sb.sb_inodelog); - return 0; - } - - /* - * If the inode chunks are aligned then use simple maths to - * find the location. Otherwise we have to do a btree - * lookup to find the location. - */ - if (M_IGEO(mp)->inoalign_mask) { - offset_agbno = agbno & M_IGEO(mp)->inoalign_mask; - chunk_agbno = agbno - offset_agbno; - } else { - error = xfs_imap_lookup(pag, tp, agino, agbno, - &chunk_agbno, &offset_agbno, flags); - if (error) - return error; - } + error = xfs_imap_lookup(pag, tp, agino, agbno, &chunk_agbno, + &offset_agbno, flags); + if (error) + return error; out_map: ASSERT(agbno >= chunk_agbno); @@ -2556,7 +2550,7 @@ xfs_imap( M_IGEO(mp)->blocks_per_cluster); offset = ((agbno - cluster_agbno) * mp->m_sb.sb_inopblock) + XFS_INO_TO_OFFSET(mp, ino); - +out: imap->im_blkno = xfs_agbno_to_daddr(pag, cluster_agbno); imap->im_len = XFS_FSB_TO_BB(mp, M_IGEO(mp)->blocks_per_cluster); imap->im_boffset = (unsigned short)(offset << mp->m_sb.sb_inodelog);