diff options
Diffstat (limited to 'fs/xfs/xfs_trans.c')
| -rw-r--r-- | fs/xfs/xfs_trans.c | 58 |
1 files changed, 46 insertions, 12 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index cc2d609..7133fd9 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -427,6 +427,14 @@ undo_blocks: * * Mark the transaction structure to indicate that the superblock * needs to be updated before committing. + * + * Because we may not be keeping track of allocated/free inodes and + * used filesystem blocks in the superblock, we do not mark the + * superblock dirty in this transaction if we modify these fields. + * We still need to update the transaction deltas so that they get + * applied to the incore superblock, but we don't want them to + * cause the superblock to get locked and logged if these are the + * only fields in the superblock that the transaction modifies. */ void xfs_trans_mod_sb( @@ -434,13 +442,19 @@ xfs_trans_mod_sb( uint field, int64_t delta) { + uint32_t flags = (XFS_TRANS_DIRTY|XFS_TRANS_SB_DIRTY); + xfs_mount_t *mp = tp->t_mountp; switch (field) { case XFS_TRANS_SB_ICOUNT: tp->t_icount_delta += delta; + if (xfs_sb_version_haslazysbcount(&mp->m_sb)) + flags &= ~XFS_TRANS_SB_DIRTY; break; case XFS_TRANS_SB_IFREE: tp->t_ifree_delta += delta; + if (xfs_sb_version_haslazysbcount(&mp->m_sb)) + flags &= ~XFS_TRANS_SB_DIRTY; break; case XFS_TRANS_SB_FDBLOCKS: /* @@ -453,6 +467,8 @@ xfs_trans_mod_sb( ASSERT(tp->t_blk_res_used <= tp->t_blk_res); } tp->t_fdblocks_delta += delta; + if (xfs_sb_version_haslazysbcount(&mp->m_sb)) + flags &= ~XFS_TRANS_SB_DIRTY; break; case XFS_TRANS_SB_RES_FDBLOCKS: /* @@ -462,6 +478,8 @@ xfs_trans_mod_sb( */ ASSERT(delta < 0); tp->t_res_fdblocks_delta += delta; + if (xfs_sb_version_haslazysbcount(&mp->m_sb)) + flags &= ~XFS_TRANS_SB_DIRTY; break; case XFS_TRANS_SB_FREXTENTS: /* @@ -544,18 +562,23 @@ xfs_trans_apply_sb_deltas( (tp->t_ag_freeblks_delta + tp->t_ag_flist_delta + tp->t_ag_btree_delta)); - if (tp->t_icount_delta != 0) { - INT_MOD(sbp->sb_icount, ARCH_CONVERT, tp->t_icount_delta); - } - if (tp->t_ifree_delta != 0) { - INT_MOD(sbp->sb_ifree, ARCH_CONVERT, tp->t_ifree_delta); - } + /* + * Only update the superblock counters if we are logging them + */ + if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { + if (tp->t_icount_delta != 0) { + INT_MOD(sbp->sb_icount, ARCH_CONVERT, tp->t_icount_delta); + } + if (tp->t_ifree_delta != 0) { + INT_MOD(sbp->sb_ifree, ARCH_CONVERT, tp->t_ifree_delta); + } - if (tp->t_fdblocks_delta != 0) { - INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_fdblocks_delta); - } - if (tp->t_res_fdblocks_delta != 0) { - INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_res_fdblocks_delta); + if (tp->t_fdblocks_delta != 0) { + INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_fdblocks_delta); + } + if (tp->t_res_fdblocks_delta != 0) { + INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_res_fdblocks_delta); + } } if (tp->t_frextents_delta != 0) { @@ -627,6 +650,7 @@ xfs_trans_unreserve_and_mod_sb( { xfs_mod_sb_t msb[14]; /* If you add cases, add entries */ xfs_mod_sb_t *msbp; + xfs_mount_t *mp = tp->t_mountp; /* REFERENCED */ int error; int rsvd; @@ -659,8 +683,15 @@ xfs_trans_unreserve_and_mod_sb( * The t_res_fdblocks_delta and t_res_frextents_delta fields are * explicitly NOT applied to the in-core superblock. * The idea is that that has already been done. + * + * If we are not logging superblock counters, then the inode + * allocated/free and used block counts are not updated in the + * on disk superblock. In this case, XFS_TRANS_SB_DIRTY will + * not be set when the transaction is updated but we still need + * to update the incore superblock with the changes. */ - if (tp->t_flags & XFS_TRANS_SB_DIRTY) { + if (xfs_sb_version_haslazysbcount(&mp->m_sb) || + (tp->t_flags & XFS_TRANS_SB_DIRTY)) { if (tp->t_icount_delta != 0) { msbp->msb_field = XFS_SBS_ICOUNT; msbp->msb_delta = tp->t_icount_delta; @@ -676,6 +707,9 @@ xfs_trans_unreserve_and_mod_sb( msbp->msb_delta = tp->t_fdblocks_delta; msbp++; } + } + + if (tp->t_flags & XFS_TRANS_SB_DIRTY) { if (tp->t_frextents_delta != 0) { msbp->msb_field = XFS_SBS_FREXTENTS; msbp->msb_delta = tp->t_frextents_delta; |
