Commit 025101dc authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Alex Elder
Browse files

xfs: cleanup log reservation calculactions 



Instead of having small helper functions calling big macros do the
calculations for the log reservations directly in the functions.
These are mostly 1:1 from the macros execept that the macros kept
the quota calculations in their callers.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarAlex Elder <aelder@sgi.com>
parent 32891b29

fs/xfs/xfs_trans.c

+400 −46
Original line number Diff line number Diff line
@@ -48,134 +48,489 @@ 


kmem_zone_t	*xfs_trans_zone;





/*

 * Various log reservation values.

 *

 * These are based on the size of the file system block because that is what

 * most transactions manipulate.  Each adds in an additional 128 bytes per

 * item logged to try to account for the overhead of the transaction mechanism.

 *

 * Note:  Most of the reservations underestimate the number of allocation

 * groups into which they could free extents in the xfs_bmap_finish() call.

 * This is because the number in the worst case is quite high and quite

 * unusual.  In order to fix this we need to change xfs_bmap_finish() to free

 * extents in only a single AG at a time.  This will require changes to the

 * EFI code as well, however, so that the EFI for the extents not freed is

 * logged again in each transaction.  See SGI PV #261917.

 *

 * Reservation functions here avoid a huge stack in xfs_trans_init due to

 * register overflow from temporaries in the calculations.

 */





/*

 * Reservation functions here avoid a huge stack in xfs_trans_init

 * due to register overflow from temporaries in the calculations.

 * In a write transaction we can allocate a maximum of 2

 * extents.  This gives:

 *    the inode getting the new extents: inode size

 *    the inode's bmap btree: max depth * block size

 *    the agfs of the ags from which the extents are allocated: 2 * sector

 *    the superblock free block counter: sector size

 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size

 * And the bmap_finish transaction can free bmap blocks in a join:

 *    the agfs of the ags containing the blocks: 2 * sector size

 *    the agfls of the ags containing the blocks: 2 * sector size

 *    the super block free block counter: sector size

 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_write_reservation(xfs_mount_t *mp)

xfs_calc_write_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_WRITE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) +

		     2 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 2) +

		     128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) +

			    XFS_ALLOCFREE_LOG_COUNT(mp, 2))),

		    (2 * mp->m_sb.sb_sectsize +

		     2 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 2) +

		     128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))));

}



/*

 * In truncating a file we free up to two extents at once.  We can modify:

 *    the inode being truncated: inode size

 *    the inode's bmap btree: (max depth + 1) * block size

 * And the bmap_finish transaction can free the blocks and bmap blocks:

 *    the agf for each of the ags: 4 * sector size

 *    the agfl for each of the ags: 4 * sector size

 *    the super block to reflect the freed blocks: sector size

 *    worst case split in allocation btrees per extent assuming 4 extents:

 *		4 exts * 2 trees * (2 * max depth - 1) * block size

 *    the inode btree: max depth * blocksize

 *    the allocation btrees: 2 trees * (max depth - 1) * block size

 */

STATIC uint

xfs_calc_itruncate_reservation(xfs_mount_t *mp)

xfs_calc_itruncate_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ITRUNCATE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) +

		     128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))),

		    (4 * mp->m_sb.sb_sectsize +

		     4 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 4) +

		     128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4)) +

		     128 * 5 +

		     XFS_ALLOCFREE_LOG_RES(mp, 1) +

		     128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels +

			    XFS_ALLOCFREE_LOG_COUNT(mp, 1))));

}



/*

 * In renaming a files we can modify:

 *    the four inodes involved: 4 * inode size

 *    the two directory btrees: 2 * (max depth + v2) * dir block size

 *    the two directory bmap btrees: 2 * max depth * block size

 * And the bmap_finish transaction can free dir and bmap blocks (two sets

 *	of bmap blocks) giving:

 *    the agf for the ags in which the blocks live: 3 * sector size

 *    the agfl for the ags in which the blocks live: 3 * sector size

 *    the superblock for the free block count: sector size

 *    the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_rename_reservation(xfs_mount_t *mp)

xfs_calc_rename_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_RENAME_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((4 * mp->m_sb.sb_inodesize +

		     2 * XFS_DIROP_LOG_RES(mp) +

		     128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp))),

		    (3 * mp->m_sb.sb_sectsize +

		     3 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 3) +

		     128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3))));

}



/*

 * For creating a link to an inode:

 *    the parent directory inode: inode size

 *    the linked inode: inode size

 *    the directory btree could split: (max depth + v2) * dir block size

 *    the directory bmap btree could join or split: (max depth + v2) * blocksize

 * And the bmap_finish transaction can free some bmap blocks giving:

 *    the agf for the ag in which the blocks live: sector size

 *    the agfl for the ag in which the blocks live: sector size

 *    the superblock for the free block count: sector size

 *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_link_reservation(xfs_mount_t *mp)

xfs_calc_link_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_LINK_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     mp->m_sb.sb_inodesize +

		     XFS_DIROP_LOG_RES(mp) +

		     128 * (2 + XFS_DIROP_LOG_COUNT(mp))),

		    (mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 1) +

		     128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1))));

}



/*

 * For removing a directory entry we can modify:

 *    the parent directory inode: inode size

 *    the removed inode: inode size

 *    the directory btree could join: (max depth + v2) * dir block size

 *    the directory bmap btree could join or split: (max depth + v2) * blocksize

 * And the bmap_finish transaction can free the dir and bmap blocks giving:

 *    the agf for the ag in which the blocks live: 2 * sector size

 *    the agfl for the ag in which the blocks live: 2 * sector size

 *    the superblock for the free block count: sector size

 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_remove_reservation(xfs_mount_t *mp)

xfs_calc_remove_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_REMOVE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     mp->m_sb.sb_inodesize +

		     XFS_DIROP_LOG_RES(mp) +

		     128 * (2 + XFS_DIROP_LOG_COUNT(mp))),

		    (2 * mp->m_sb.sb_sectsize +

		     2 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 2) +

		     128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))));

}



/*

 * For symlink we can modify:

 *    the parent directory inode: inode size

 *    the new inode: inode size

 *    the inode btree entry: 1 block

 *    the directory btree: (max depth + v2) * dir block size

 *    the directory inode's bmap btree: (max depth + v2) * block size

 *    the blocks for the symlink: 1 kB

 * Or in the first xact we allocate some inodes giving:

 *    the agi and agf of the ag getting the new inodes: 2 * sectorsize

 *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize

 *    the inode btree: max depth * blocksize

 *    the allocation btrees: 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_symlink_reservation(xfs_mount_t *mp)

xfs_calc_symlink_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_SYMLINK_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     mp->m_sb.sb_inodesize +

		     XFS_FSB_TO_B(mp, 1) +

		     XFS_DIROP_LOG_RES(mp) +

		     1024 +

		     128 * (4 + XFS_DIROP_LOG_COUNT(mp))),

		    (2 * mp->m_sb.sb_sectsize +

		     XFS_FSB_TO_B(mp, XFS_IALLOC_BLOCKS(mp)) +

		     XFS_FSB_TO_B(mp, mp->m_in_maxlevels) +

		     XFS_ALLOCFREE_LOG_RES(mp, 1) +

		     128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels +

			    XFS_ALLOCFREE_LOG_COUNT(mp, 1))));

}



/*

 * For create we can modify:

 *    the parent directory inode: inode size

 *    the new inode: inode size

 *    the inode btree entry: block size

 *    the superblock for the nlink flag: sector size

 *    the directory btree: (max depth + v2) * dir block size

 *    the directory inode's bmap btree: (max depth + v2) * block size

 * Or in the first xact we allocate some inodes giving:

 *    the agi and agf of the ag getting the new inodes: 2 * sectorsize

 *    the superblock for the nlink flag: sector size

 *    the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize

 *    the inode btree: max depth * blocksize

 *    the allocation btrees: 2 trees * (max depth - 1) * block size

 */

STATIC uint

xfs_calc_create_reservation(xfs_mount_t *mp)

xfs_calc_create_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_CREATE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     mp->m_sb.sb_inodesize +

		     mp->m_sb.sb_sectsize +

		     XFS_FSB_TO_B(mp, 1) +

		     XFS_DIROP_LOG_RES(mp) +

		     128 * (3 + XFS_DIROP_LOG_COUNT(mp))),

		    (3 * mp->m_sb.sb_sectsize +

		     XFS_FSB_TO_B(mp, XFS_IALLOC_BLOCKS(mp)) +

		     XFS_FSB_TO_B(mp, mp->m_in_maxlevels) +

		     XFS_ALLOCFREE_LOG_RES(mp, 1) +

		     128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels +

			    XFS_ALLOCFREE_LOG_COUNT(mp, 1))));

}



/*

 * Making a new directory is the same as creating a new file.

 */

STATIC uint

xfs_calc_mkdir_reservation(xfs_mount_t *mp)

xfs_calc_mkdir_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_MKDIR_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return xfs_calc_create_reservation(mp);

}



/*

 * In freeing an inode we can modify:

 *    the inode being freed: inode size

 *    the super block free inode counter: sector size

 *    the agi hash list and counters: sector size

 *    the inode btree entry: block size

 *    the on disk inode before ours in the agi hash list: inode cluster size

 *    the inode btree: max depth * blocksize

 *    the allocation btrees: 2 trees * (max depth - 1) * block size

 */

STATIC uint

xfs_calc_ifree_reservation(xfs_mount_t *mp)

xfs_calc_ifree_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_IFREE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return XFS_DQUOT_LOGRES(mp) +

		mp->m_sb.sb_inodesize +

		mp->m_sb.sb_sectsize +

		mp->m_sb.sb_sectsize +

		XFS_FSB_TO_B(mp, 1) +

		MAX((__uint16_t)XFS_FSB_TO_B(mp, 1),

		    XFS_INODE_CLUSTER_SIZE(mp)) +

		128 * 5 +

		XFS_ALLOCFREE_LOG_RES(mp, 1) +

		128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels +

		       XFS_ALLOCFREE_LOG_COUNT(mp, 1));

}



/*

 * When only changing the inode we log the inode and possibly the superblock

 * We also add a bit of slop for the transaction stuff.

 */

STATIC uint

xfs_calc_ichange_reservation(xfs_mount_t *mp)

xfs_calc_ichange_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ICHANGE_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return XFS_DQUOT_LOGRES(mp) +

		mp->m_sb.sb_inodesize +

		mp->m_sb.sb_sectsize +

		512;



}



/*

 * Growing the data section of the filesystem.

 *	superblock

 *	agi and agf

 *	allocation btrees

 */

STATIC uint

xfs_calc_growdata_reservation(xfs_mount_t *mp)

xfs_calc_growdata_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_GROWDATA_LOG_RES(mp);

	return mp->m_sb.sb_sectsize * 3 +

		XFS_ALLOCFREE_LOG_RES(mp, 1) +

		128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1));

}



/*

 * Growing the rt section of the filesystem.

 * In the first set of transactions (ALLOC) we allocate space to the

 * bitmap or summary files.

 *	superblock: sector size

 *	agf of the ag from which the extent is allocated: sector size

 *	bmap btree for bitmap/summary inode: max depth * blocksize

 *	bitmap/summary inode: inode size

 *	allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize

 */

STATIC uint

xfs_calc_growrtalloc_reservation(xfs_mount_t *mp)

xfs_calc_growrtalloc_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_GROWRTALLOC_LOG_RES(mp);

	return 2 * mp->m_sb.sb_sectsize +

		XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) +

		mp->m_sb.sb_inodesize +

		XFS_ALLOCFREE_LOG_RES(mp, 1) +

		128 * (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) +

		       XFS_ALLOCFREE_LOG_COUNT(mp, 1));

}



/*

 * Growing the rt section of the filesystem.

 * In the second set of transactions (ZERO) we zero the new metadata blocks.

 *	one bitmap/summary block: blocksize

 */

STATIC uint

xfs_calc_growrtzero_reservation(xfs_mount_t *mp)

xfs_calc_growrtzero_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_GROWRTZERO_LOG_RES(mp);

	return mp->m_sb.sb_blocksize + 128;

}



/*

 * Growing the rt section of the filesystem.

 * In the third set of transactions (FREE) we update metadata without

 * allocating any new blocks.

 *	superblock: sector size

 *	bitmap inode: inode size

 *	summary inode: inode size

 *	one bitmap block: blocksize

 *	summary blocks: new summary size

 */

STATIC uint

xfs_calc_growrtfree_reservation(xfs_mount_t *mp)

xfs_calc_growrtfree_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_GROWRTFREE_LOG_RES(mp);

	return mp->m_sb.sb_sectsize +

		2 * mp->m_sb.sb_inodesize +

		mp->m_sb.sb_blocksize +

		mp->m_rsumsize +

		128 * 5;

}



/*

 * Logging the inode modification timestamp on a synchronous write.

 *	inode

 */

STATIC uint

xfs_calc_swrite_reservation(xfs_mount_t *mp)

xfs_calc_swrite_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_SWRITE_LOG_RES(mp);

	return mp->m_sb.sb_inodesize + 128;

}



/*

 * Logging the inode mode bits when writing a setuid/setgid file

 *	inode

 */

STATIC uint

xfs_calc_writeid_reservation(xfs_mount_t *mp)

{

	return XFS_CALC_WRITEID_LOG_RES(mp);

	return mp->m_sb.sb_inodesize + 128;

}



/*

 * Converting the inode from non-attributed to attributed.

 *	the inode being converted: inode size

 *	agf block and superblock (for block allocation)

 *	the new block (directory sized)

 *	bmap blocks for the new directory block

 *	allocation btrees

 */

STATIC uint

xfs_calc_addafork_reservation(xfs_mount_t *mp)

xfs_calc_addafork_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ADDAFORK_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

}



	return XFS_DQUOT_LOGRES(mp) +

		mp->m_sb.sb_inodesize +

		mp->m_sb.sb_sectsize * 2 +

		mp->m_dirblksize +

		XFS_FSB_TO_B(mp, XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) +

		XFS_ALLOCFREE_LOG_RES(mp, 1) +

		128 * (4 + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1 +

		       XFS_ALLOCFREE_LOG_COUNT(mp, 1));

}



/*

 * Removing the attribute fork of a file

 *    the inode being truncated: inode size

 *    the inode's bmap btree: max depth * block size

 * And the bmap_finish transaction can free the blocks and bmap blocks:

 *    the agf for each of the ags: 4 * sector size

 *    the agfl for each of the ags: 4 * sector size

 *    the super block to reflect the freed blocks: sector size

 *    worst case split in allocation btrees per extent assuming 4 extents:

 *		4 exts * 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_attrinval_reservation(xfs_mount_t *mp)

xfs_calc_attrinval_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ATTRINVAL_LOG_RES(mp);

}



	return MAX((mp->m_sb.sb_inodesize +

		    XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +

		    128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))),

		   (4 * mp->m_sb.sb_sectsize +

		    4 * mp->m_sb.sb_sectsize +

		    mp->m_sb.sb_sectsize +

		    XFS_ALLOCFREE_LOG_RES(mp, 4) +

		    128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4))));

}



/*

 * Setting an attribute.

 *	the inode getting the attribute

 *	the superblock for allocations

 *	the agfs extents are allocated from

 *	the attribute btree * max depth

 *	the inode allocation btree

 * Since attribute transaction space is dependent on the size of the attribute,

 * the calculation is done partially at mount time and partially at runtime.

 */

STATIC uint

xfs_calc_attrset_reservation(xfs_mount_t *mp)

xfs_calc_attrset_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ATTRSET_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return XFS_DQUOT_LOGRES(mp) +

		mp->m_sb.sb_inodesize +

		mp->m_sb.sb_sectsize +

		XFS_FSB_TO_B(mp, XFS_DA_NODE_MAXDEPTH) +

		128 * (2 + XFS_DA_NODE_MAXDEPTH);

}



/*

 * Removing an attribute.

 *    the inode: inode size

 *    the attribute btree could join: max depth * block size

 *    the inode bmap btree could join or split: max depth * block size

 * And the bmap_finish transaction can free the attr blocks freed giving:

 *    the agf for the ag in which the blocks live: 2 * sector size

 *    the agfl for the ag in which the blocks live: 2 * sector size

 *    the superblock for the free block count: sector size

 *    the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size

 */

STATIC uint

xfs_calc_attrrm_reservation(xfs_mount_t *mp)

xfs_calc_attrrm_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_ATTRRM_LOG_RES(mp) + XFS_DQUOT_LOGRES(mp);

	return XFS_DQUOT_LOGRES(mp) +

		MAX((mp->m_sb.sb_inodesize +

		     XFS_FSB_TO_B(mp, XFS_DA_NODE_MAXDEPTH) +

		     XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +

		     128 * (1 + XFS_DA_NODE_MAXDEPTH +

			    XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))),

		    (2 * mp->m_sb.sb_sectsize +

		     2 * mp->m_sb.sb_sectsize +

		     mp->m_sb.sb_sectsize +

		     XFS_ALLOCFREE_LOG_RES(mp, 2) +

		     128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2))));

}



/*

 * Clearing a bad agino number in an agi hash bucket.

 */

STATIC uint

xfs_calc_clear_agi_bucket_reservation(xfs_mount_t *mp)

xfs_calc_clear_agi_bucket_reservation(

	struct xfs_mount	*mp)

{

	return XFS_CALC_CLEAR_AGI_BUCKET_LOG_RES(mp);

	return mp->m_sb.sb_sectsize + 128;

}



/*
@@ -184,11 +539,10 @@ xfs_calc_clear_agi_bucket_reservation(xfs_mount_t *mp) 
 */

void

xfs_trans_init(

	xfs_mount_t	*mp)

	struct xfs_mount	*mp)

{

	xfs_trans_reservations_t	*resp;

	struct xfs_trans_reservations *resp = &mp->m_reservations;



	resp = &(mp->m_reservations);

	resp->tr_write = xfs_calc_write_reservation(mp);

	resp->tr_itruncate = xfs_calc_itruncate_reservation(mp);

	resp->tr_rename = xfs_calc_rename_reservation(mp);

fs/xfs/xfs_trans.h

+0 −411

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