diff options
Diffstat (limited to 'fs/xfs/xfs_trans.c')
| -rw-r--r-- | fs/xfs/xfs_trans.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 3c94e5ff4316..0ad72a83edac 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -107,7 +107,8 @@ xfs_trans_dup( ntp->t_flags = XFS_TRANS_PERM_LOG_RES | (tp->t_flags & XFS_TRANS_RESERVE) | - (tp->t_flags & XFS_TRANS_NO_WRITECOUNT); + (tp->t_flags & XFS_TRANS_NO_WRITECOUNT) | + (tp->t_flags & XFS_TRANS_RES_FDBLKS); /* We gave our writer reference to the new transaction */ tp->t_flags |= XFS_TRANS_NO_WRITECOUNT; ntp->t_ticket = xfs_log_ticket_get(tp->t_ticket); @@ -272,6 +273,8 @@ xfs_trans_alloc( */ WARN_ON(resp->tr_logres > 0 && mp->m_super->s_writers.frozen == SB_FREEZE_COMPLETE); + ASSERT(!(flags & XFS_TRANS_RES_FDBLKS) || + xfs_sb_version_haslazysbcount(&mp->m_sb)); tp->t_magic = XFS_TRANS_HEADER_MAGIC; tp->t_flags = flags; @@ -365,6 +368,20 @@ xfs_trans_mod_sb( tp->t_blk_res_used += (uint)-delta; if (tp->t_blk_res_used > tp->t_blk_res) xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); + } else if (delta > 0 && (tp->t_flags & XFS_TRANS_RES_FDBLKS)) { + int64_t blkres_delta; + + /* + * Return freed blocks directly to the reservation + * instead of the global pool, being careful not to + * overflow the trans counter. This is used to preserve + * reservation across chains of transaction rolls that + * repeatedly free and allocate blocks. + */ + blkres_delta = min_t(int64_t, delta, + UINT_MAX - tp->t_blk_res); + tp->t_blk_res += blkres_delta; + delta -= blkres_delta; } tp->t_fdblocks_delta += delta; if (xfs_sb_version_haslazysbcount(&mp->m_sb)) |