kmem_zone_t *xfs_trans_zone;
+
/*
- * Reservation functions here avoid a huge stack in xfs_trans_init
- * due to register overflow from temporaries in the calculations.
+ * 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.
+ */
+
+
+/*
+ * 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;
}
/*
*/
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);
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff