diff options
Diffstat (limited to 'fs/xfs/xfs_reflink.c')
| -rw-r--r-- | fs/xfs/xfs_reflink.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index a30be03395fb..0aac26208a82 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -40,6 +40,7 @@ #include "xfs_log.h" #include "xfs_icache.h" #include "xfs_pnfs.h" +#include "xfs_btree.h" #include "xfs_refcount_btree.h" #include "xfs_refcount.h" #include "xfs_bmap_btree.h" @@ -563,6 +564,13 @@ xfs_reflink_cancel_cow_blocks( xfs_trans_ijoin(*tpp, ip, 0); xfs_defer_init(&dfops, &firstfsb); + /* Free the CoW orphan record. */ + error = xfs_refcount_free_cow_extent(ip->i_mount, + &dfops, irec.br_startblock, + irec.br_blockcount); + if (error) + break; + xfs_bmap_add_free(ip->i_mount, &dfops, irec.br_startblock, irec.br_blockcount, NULL); @@ -719,6 +727,13 @@ xfs_reflink_end_cow( irec.br_blockcount = rlen; trace_xfs_reflink_cow_remap_piece(ip, &uirec); + /* Free the CoW orphan record. */ + error = xfs_refcount_free_cow_extent(tp->t_mountp, + &dfops, uirec.br_startblock, + uirec.br_blockcount); + if (error) + goto out_defer; + /* Map the new blocks into the data fork. */ error = xfs_bmap_map_extent(tp->t_mountp, &dfops, ip, &uirec); @@ -755,3 +770,25 @@ out: trace_xfs_reflink_end_cow_error(ip, error, _RET_IP_); return error; } + +/* + * Free leftover CoW reservations that didn't get cleaned out. + */ +int +xfs_reflink_recover_cow( + struct xfs_mount *mp) +{ + xfs_agnumber_t agno; + int error = 0; + + if (!xfs_sb_version_hasreflink(&mp->m_sb)) + return 0; + + for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { + error = xfs_refcount_recover_cow_leftovers(mp, agno); + if (error) + break; + } + + return error; +} |