From 56d1115c9bc7853e143f59fb5976cf3de609f657 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 29 May 2015 09:18:32 +1000 Subject: xfs: allocate sparse inode chunks on full chunk allocation failure xfs_ialloc_ag_alloc() makes several attempts to allocate a full inode chunk. If all else fails, reduce the allocation to the sparse length and alignment and attempt to allocate a sparse inode chunk. If sparse chunk allocation succeeds, check whether an inobt record already exists that can track the chunk. If so, inherit and update the existing record. Otherwise, insert a new record for the sparse chunk. Create helpers to align sparse chunk inode records and insert or update existing records in the inode btrees. The xfs_inobt_insert_sprec() helper implements the merge or update semantics required for sparse inode records with respect to both the inobt and finobt. To update the inobt, either insert a new record or merge with an existing record. To update the finobt, use the updated inobt record to either insert or replace an existing record. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_ialloc_btree.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'fs/xfs/libxfs/xfs_ialloc_btree.h') diff --git a/fs/xfs/libxfs/xfs_ialloc_btree.h b/fs/xfs/libxfs/xfs_ialloc_btree.h index 2c581ba69cde..bd88453217ce 100644 --- a/fs/xfs/libxfs/xfs_ialloc_btree.h +++ b/fs/xfs/libxfs/xfs_ialloc_btree.h @@ -65,4 +65,11 @@ extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int); /* ir_holemask to inode allocation bitmap conversion */ uint64_t xfs_inobt_irec_to_allocmask(struct xfs_inobt_rec_incore *); +#if defined(DEBUG) || defined(XFS_WARN) +int xfs_inobt_rec_check_count(struct xfs_mount *, + struct xfs_inobt_rec_incore *); +#else +#define xfs_inobt_rec_check_count(mp, rec) 0 +#endif /* DEBUG */ + #endif /* __XFS_IALLOC_BTREE_H__ */ -- cgit v1.2.1