Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit af30dfa1 authored by Darrick J. Wong's avatar Darrick J. Wong
Browse files

xfs: refcount btree add more reserved blocks 



Since XFS reserves a small amount of space in each AG as the minimum
free space needed for an operation, save some more space in case we
touch the refcount btree.

Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
parent 46eeb521

fs/xfs/libxfs/xfs_alloc.c

+13 −0
Original line number Diff line number Diff line
@@ -52,10 +52,23 @@ STATIC int xfs_alloc_ag_vextent_size(xfs_alloc_arg_t *); 
STATIC int xfs_alloc_ag_vextent_small(xfs_alloc_arg_t *,

		xfs_btree_cur_t *, xfs_agblock_t *, xfs_extlen_t *, int *);



unsigned int

xfs_refc_block(

	struct xfs_mount	*mp)

{

	if (xfs_sb_version_hasrmapbt(&mp->m_sb))

		return XFS_RMAP_BLOCK(mp) + 1;

	if (xfs_sb_version_hasfinobt(&mp->m_sb))

		return XFS_FIBT_BLOCK(mp) + 1;

	return XFS_IBT_BLOCK(mp) + 1;

}



xfs_extlen_t

xfs_prealloc_blocks(

	struct xfs_mount	*mp)

{

	if (xfs_sb_version_hasreflink(&mp->m_sb))

		return xfs_refc_block(mp) + 1;

	if (xfs_sb_version_hasrmapbt(&mp->m_sb))

		return XFS_RMAP_BLOCK(mp) + 1;

	if (xfs_sb_version_hasfinobt(&mp->m_sb))

fs/xfs/libxfs/xfs_format.h

+2 −0
Original line number Diff line number Diff line
@@ -1455,6 +1455,8 @@ typedef __be32 xfs_rmap_ptr_t; 
 */

#define	XFS_REFC_CRC_MAGIC	0x52334643	/* 'R3FC' */



unsigned int xfs_refc_block(struct xfs_mount *mp);





/*

 * BMAP Btree format definitions