From fa30f03cda26783b1294af6e7da9f1142da0f52e Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 3 Aug 2016 11:37:10 +1000 Subject: [PATCH] xfs: rmap btree transaction reservations The rmap btrees will use the AGFL as the block allocation source, so we need to ensure that the transaction reservations reflect the fact this tree is modified by allocation and freeing. Hence we need to extend all the extent allocation/free reservations used in transactions to handle this. Note that this also gets rid of the unused XFS_ALLOCFREE_LOG_RES macro, as we now do buffer reservations based on the number of buffers logged via xfs_calc_buf_res(). Hence we only need the buffer count calculation now. [darrick: use rmap_maxlevels when calculating log block resv] Signed-off-by: Dave Chinner Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_trans_resv.c | 58 ++++++++++++++++++++++++---------- fs/xfs/libxfs/xfs_trans_resv.h | 10 ------ 2 files changed, 41 insertions(+), 27 deletions(-) diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c index 4c7eb9d7c0c7..301ef2f4dbd6 100644 --- a/fs/xfs/libxfs/xfs_trans_resv.c +++ b/fs/xfs/libxfs/xfs_trans_resv.c @@ -63,6 +63,30 @@ xfs_calc_buf_res( return nbufs * (size + xfs_buf_log_overhead()); } +/* + * Per-extent log reservation for the btree changes involved in freeing or + * allocating an extent. In classic XFS there were two trees that will be + * modified (bnobt + cntbt). With rmap enabled, there are three trees + * (rmapbt). The number of blocks reserved is based on the formula: + * + * num trees * ((2 blocks/level * max depth) - 1) + * + * Keep in mind that max depth is calculated separately for each type of tree. + */ +static uint +xfs_allocfree_log_count( + struct xfs_mount *mp, + uint num_ops) +{ + uint blocks; + + blocks = num_ops * 2 * (2 * mp->m_ag_maxlevels - 1); + if (xfs_sb_version_hasrmapbt(&mp->m_sb)) + blocks += num_ops * (2 * mp->m_rmap_maxlevels - 1); + + return blocks; +} + /* * Logging inodes is really tricksy. They are logged in memory format, * which means that what we write into the log doesn't directly translate into @@ -126,7 +150,7 @@ xfs_calc_inode_res( */ STATIC uint xfs_calc_finobt_res( - struct xfs_mount *mp, + struct xfs_mount *mp, int alloc, int modify) { @@ -137,7 +161,7 @@ xfs_calc_finobt_res( res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)); if (alloc) - res += xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + res += xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)); if (modify) res += (uint)XFS_FSB_TO_B(mp, 1); @@ -188,10 +212,10 @@ xfs_calc_write_reservation( xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), XFS_FSB_TO_B(mp, 1)))); } @@ -217,10 +241,10 @@ xfs_calc_itruncate_reservation( xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1, XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4), XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(5, 0) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(2 + mp->m_ialloc_blks + mp->m_in_maxlevels, 0))); @@ -247,7 +271,7 @@ xfs_calc_rename_reservation( xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 3), XFS_FSB_TO_B(mp, 1)))); } @@ -286,7 +310,7 @@ xfs_calc_link_reservation( xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)))); } @@ -324,7 +348,7 @@ xfs_calc_remove_reservation( xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), XFS_FSB_TO_B(mp, 1)))); } @@ -371,7 +395,7 @@ xfs_calc_create_resv_alloc( mp->m_sb.sb_sectsize + xfs_calc_buf_res(mp->m_ialloc_blks, XFS_FSB_TO_B(mp, 1)) + xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)); } @@ -399,7 +423,7 @@ xfs_calc_icreate_resv_alloc( return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) + mp->m_sb.sb_sectsize + xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)) + xfs_calc_finobt_res(mp, 0, 0); } @@ -483,7 +507,7 @@ xfs_calc_ifree_reservation( xfs_calc_buf_res(1, 0) + xfs_calc_buf_res(2 + mp->m_ialloc_blks + mp->m_in_maxlevels, 0) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)) + xfs_calc_finobt_res(mp, 0, 1); } @@ -513,7 +537,7 @@ xfs_calc_growdata_reservation( struct xfs_mount *mp) { return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)); } @@ -535,7 +559,7 @@ xfs_calc_growrtalloc_reservation( xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), XFS_FSB_TO_B(mp, 1)) + xfs_calc_inode_res(mp, 1) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)); } @@ -611,7 +635,7 @@ xfs_calc_addafork_reservation( xfs_calc_buf_res(1, mp->m_dir_geo->blksize) + xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1, XFS_FSB_TO_B(mp, 1)) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1), XFS_FSB_TO_B(mp, 1)); } @@ -634,7 +658,7 @@ xfs_calc_attrinval_reservation( xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK), XFS_FSB_TO_B(mp, 1))), (xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4), XFS_FSB_TO_B(mp, 1)))); } @@ -701,7 +725,7 @@ xfs_calc_attrrm_reservation( XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)), (xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) + - xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2), + xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2), XFS_FSB_TO_B(mp, 1)))); } diff --git a/fs/xfs/libxfs/xfs_trans_resv.h b/fs/xfs/libxfs/xfs_trans_resv.h index 797815012c0e..0eb46ed6d404 100644 --- a/fs/xfs/libxfs/xfs_trans_resv.h +++ b/fs/xfs/libxfs/xfs_trans_resv.h @@ -67,16 +67,6 @@ struct xfs_trans_resv { /* shorthand way of accessing reservation structure */ #define M_RES(mp) (&(mp)->m_resv) -/* - * Per-extent log reservation for the allocation btree changes - * involved in freeing or allocating an extent. - * 2 trees * (2 blocks/level * max depth - 1) * block size - */ -#define XFS_ALLOCFREE_LOG_RES(mp,nx) \ - ((nx) * (2 * XFS_FSB_TO_B((mp), 2 * (mp)->m_ag_maxlevels - 1))) -#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \ - ((nx) * (2 * (2 * (mp)->m_ag_maxlevels - 1))) - /* * Per-directory log reservation for any directory change. * dir blocks: (1 btree block per level + data block + free block) * dblock size -- GitLab