diff options
Diffstat (limited to 'fs/btrfs/qgroup.c')
| -rw-r--r-- | fs/btrfs/qgroup.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index c297909f1506..1332ec59c539 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -2005,16 +2005,26 @@ int btrfs_qgroup_trace_extent_nolock(struct btrfs_fs_info *fs_info, struct btrfs_qgroup_extent_record *record) { struct btrfs_qgroup_extent_record *existing, *ret; - unsigned long bytenr = record->bytenr; + const unsigned long index = (record->bytenr >> fs_info->sectorsize_bits); if (!btrfs_qgroup_full_accounting(fs_info)) return 1; +#if BITS_PER_LONG == 32 + if (record->bytenr >= MAX_LFS_FILESIZE) { + btrfs_err_rl(fs_info, +"qgroup record for extent at %llu is beyond 32bit page cache and xarray index limit", + record->bytenr); + btrfs_err_32bit_limit(fs_info); + return -EOVERFLOW; + } +#endif + lockdep_assert_held(&delayed_refs->lock); trace_btrfs_qgroup_trace_extent(fs_info, record); xa_lock(&delayed_refs->dirty_extents); - existing = xa_load(&delayed_refs->dirty_extents, bytenr); + existing = xa_load(&delayed_refs->dirty_extents, index); if (existing) { if (record->data_rsv && !existing->data_rsv) { existing->data_rsv = record->data_rsv; @@ -2024,7 +2034,7 @@ int btrfs_qgroup_trace_extent_nolock(struct btrfs_fs_info *fs_info, return 1; } - ret = __xa_store(&delayed_refs->dirty_extents, record->bytenr, record, GFP_ATOMIC); + ret = __xa_store(&delayed_refs->dirty_extents, index, record, GFP_ATOMIC); xa_unlock(&delayed_refs->dirty_extents); if (xa_is_err(ret)) { qgroup_mark_inconsistent(fs_info); @@ -2129,6 +2139,7 @@ int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr, struct btrfs_fs_info *fs_info = trans->fs_info; struct btrfs_qgroup_extent_record *record; struct btrfs_delayed_ref_root *delayed_refs; + const unsigned long index = (bytenr >> fs_info->sectorsize_bits); int ret; if (!btrfs_qgroup_full_accounting(fs_info) || bytenr == 0 || num_bytes == 0) @@ -2137,7 +2148,7 @@ int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr, if (!record) return -ENOMEM; - if (xa_reserve(&trans->transaction->delayed_refs.dirty_extents, bytenr, GFP_NOFS)) { + if (xa_reserve(&trans->transaction->delayed_refs.dirty_extents, index, GFP_NOFS)) { kfree(record); return -ENOMEM; } @@ -2152,7 +2163,7 @@ int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr, spin_unlock(&delayed_refs->lock); if (ret) { /* Clean up if insertion fails or item exists. */ - xa_release(&delayed_refs->dirty_extents, record->bytenr); + xa_release(&delayed_refs->dirty_extents, index); kfree(record); return 0; } |