diff options
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_ialloc.c | 108 |
1 files changed, 68 insertions, 40 deletions
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index 20c39a6e6a0..4eeb856183b 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -136,7 +136,7 @@ xfs_ialloc_ag_alloc( int ninodes; /* num inodes per buf */ xfs_agino_t thisino; /* current inode number, for loop */ int version; /* inode version number to use */ - int isaligned; /* inode allocation at stripe unit */ + int isaligned = 0; /* inode allocation at stripe unit */ /* boundary */ args.tp = tp; @@ -152,47 +152,75 @@ xfs_ialloc_ag_alloc( return XFS_ERROR(ENOSPC); args.minlen = args.maxlen = XFS_IALLOC_BLOCKS(args.mp); /* - * Set the alignment for the allocation. - * If stripe alignment is turned on then align at stripe unit - * boundary. - * If the cluster size is smaller than a filesystem block - * then we're doing I/O for inodes in filesystem block size pieces, - * so don't need alignment anyway. - */ - isaligned = 0; - if (args.mp->m_sinoalign) { - ASSERT(!(args.mp->m_flags & XFS_MOUNT_NOALIGN)); - args.alignment = args.mp->m_dalign; - isaligned = 1; - } else if (XFS_SB_VERSION_HASALIGN(&args.mp->m_sb) && - args.mp->m_sb.sb_inoalignmt >= - XFS_B_TO_FSBT(args.mp, XFS_INODE_CLUSTER_SIZE(args.mp))) - args.alignment = args.mp->m_sb.sb_inoalignmt; - else - args.alignment = 1; + * First try to allocate inodes contiguous with the last-allocated + * chunk of inodes. If the filesystem is striped, this will fill + * an entire stripe unit with inodes. + */ agi = XFS_BUF_TO_AGI(agbp); - /* - * Need to figure out where to allocate the inode blocks. - * Ideally they should be spaced out through the a.g. - * For now, just allocate blocks up front. - */ - args.agbno = be32_to_cpu(agi->agi_root); - args.fsbno = XFS_AGB_TO_FSB(args.mp, be32_to_cpu(agi->agi_seqno), - args.agbno); - /* - * Allocate a fixed-size extent of inodes. - */ - args.type = XFS_ALLOCTYPE_NEAR_BNO; - args.mod = args.total = args.wasdel = args.isfl = args.userdata = - args.minalignslop = 0; - args.prod = 1; - /* - * Allow space for the inode btree to split. - */ - args.minleft = XFS_IN_MAXLEVELS(args.mp) - 1; - if ((error = xfs_alloc_vextent(&args))) - return error; + newino = be32_to_cpu(agi->agi_newino); + if(likely(newino != NULLAGINO)) { + args.agbno = XFS_AGINO_TO_AGBNO(args.mp, newino) + + XFS_IALLOC_BLOCKS(args.mp); + args.fsbno = XFS_AGB_TO_FSB(args.mp, + be32_to_cpu(agi->agi_seqno), args.agbno); + args.type = XFS_ALLOCTYPE_THIS_BNO; + args.mod = args.total = args.wasdel = args.isfl = + args.userdata = args.minalignslop = 0; + args.prod = 1; + args.alignment = 1; + /* + * Allow space for the inode btree to split. + */ + args.minleft = XFS_IN_MAXLEVELS(args.mp) - 1; + if ((error = xfs_alloc_vextent(&args))) + return error; + } else + args.fsbno = NULLFSBLOCK; + if (unlikely(args.fsbno == NULLFSBLOCK)) { + /* + * Set the alignment for the allocation. + * If stripe alignment is turned on then align at stripe unit + * boundary. + * If the cluster size is smaller than a filesystem block + * then we're doing I/O for inodes in filesystem block size + * pieces, so don't need alignment anyway. + */ + isaligned = 0; + if (args.mp->m_sinoalign) { + ASSERT(!(args.mp->m_flags & XFS_MOUNT_NOALIGN)); + args.alignment = args.mp->m_dalign; + isaligned = 1; + } else if (XFS_SB_VERSION_HASALIGN(&args.mp->m_sb) && + args.mp->m_sb.sb_inoalignmt >= + XFS_B_TO_FSBT(args.mp, + XFS_INODE_CLUSTER_SIZE(args.mp))) + args.alignment = args.mp->m_sb.sb_inoalignmt; + else + args.alignment = 1; + /* + * Need to figure out where to allocate the inode blocks. + * Ideally they should be spaced out through the a.g. + * For now, just allocate blocks up front. + */ + args.agbno = be32_to_cpu(agi->agi_root); + args.fsbno = XFS_AGB_TO_FSB(args.mp, + be32_to_cpu(agi->agi_seqno), args.agbno); + /* + * Allocate a fixed-size extent of inodes. + */ + args.type = XFS_ALLOCTYPE_NEAR_BNO; + args.mod = args.total = args.wasdel = args.isfl = + args.userdata = args.minalignslop = 0; + args.prod = 1; + /* + * Allow space for the inode btree to split. + */ + args.minleft = XFS_IN_MAXLEVELS(args.mp) - 1; + if ((error = xfs_alloc_vextent(&args))) + return error; + } + /* * If stripe alignment is turned on, then try again with cluster * alignment. |