diff options
Diffstat (limited to 'volumes.c')
| -rw-r--r-- | volumes.c | 16 |
1 files changed, 14 insertions, 2 deletions
@@ -1779,12 +1779,15 @@ int write_raid56_with_parity(struct btrfs_fs_info *info, struct btrfs_multi_bio *multi, u64 stripe_len, u64 *raid_map) { - struct extent_buffer *ebs[multi->num_stripes], *p_eb = NULL, *q_eb = NULL; + struct extent_buffer **ebs, *p_eb = NULL, *q_eb = NULL; int i; int j; int ret; int alloc_size = eb->len; + ebs = kmalloc(sizeof(*ebs) * multi->num_stripes, GFP_NOFS); + BUG_ON(!ebs); + if (stripe_len > alloc_size) alloc_size = stripe_len; @@ -1813,7 +1816,12 @@ int write_raid56_with_parity(struct btrfs_fs_info *info, q_eb = new_eb; } if (q_eb) { - void *pointers[multi->num_stripes]; + void **pointers; + + pointers = kmalloc(sizeof(*pointers) * multi->num_stripes, + GFP_NOFS); + BUG_ON(!pointers); + ebs[multi->num_stripes - 2] = p_eb; ebs[multi->num_stripes - 1] = q_eb; @@ -1821,6 +1829,7 @@ int write_raid56_with_parity(struct btrfs_fs_info *info, pointers[i] = ebs[i]->data; raid6_gen_syndrome(multi->num_stripes, stripe_len, pointers); + kfree(pointers); } else { ebs[multi->num_stripes - 1] = p_eb; memcpy(p_eb->data, ebs[0]->data, stripe_len); @@ -1838,5 +1847,8 @@ int write_raid56_with_parity(struct btrfs_fs_info *info, if (ebs[i] != eb) kfree(ebs[i]); } + + kfree(ebs); + return 0; } |