The inode allocator enables random sparse inode chunk allocations in DEBUG mode to facilitate testing. Sparse inode allocations are not always possible, however, depending on the fs geometry. For example, there is no possibility for a sparse inode allocation on filesystems where the block size is large enough to fit one or more inode chunks within a single block. Fix up the DEBUG mode sparse inode allocation logic to trigger random sparse allocations only when the geometry of the fs allows it. Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx> --- fs/xfs/libxfs/xfs_ialloc.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c index a18bc75..66efc70 100644 --- a/fs/xfs/libxfs/xfs_ialloc.c +++ b/fs/xfs/libxfs/xfs_ialloc.c @@ -606,20 +606,20 @@ xfs_ialloc_ag_alloc( uint16_t allocmask = (uint16_t) -1; /* init. to full chunk */ struct xfs_inobt_rec_incore rec; struct xfs_perag *pag; - int do_sparse = 0; -#ifdef DEBUG - /* randomly do sparse inode allocations */ - if (xfs_sb_version_hassparseinodes(&tp->t_mountp->m_sb)) - do_sparse = prandom_u32() & 1; -#endif - memset(&args, 0, sizeof(args)); args.tp = tp; args.mp = tp->t_mountp; args.fsbno = NULLFSBLOCK; +#ifdef DEBUG + /* randomly do sparse inode allocations */ + if (xfs_sb_version_hassparseinodes(&tp->t_mountp->m_sb) && + args.mp->m_ialloc_min_blks < args.mp->m_ialloc_blks) + do_sparse = prandom_u32() & 1; +#endif + /* * Locking will ensure that we don't have two callers in here * at one time. @@ -768,6 +768,7 @@ sparse_alloc: return error; newlen = args.len << args.mp->m_sb.sb_inopblog; + ASSERT(newlen <= XFS_INODES_PER_CHUNK); allocmask = (1 << (newlen / XFS_INODES_PER_HOLEMASK_BIT)) - 1; } -- 1.9.3 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
