diff options
| -rw-r--r-- | fs/btrfs/ctree.c | 19 | ||||
| -rw-r--r-- | fs/btrfs/extent_io.c | 8 |
2 files changed, 16 insertions, 11 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 1dd8a71f567d..5f7a97556583 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -1191,8 +1191,8 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, * is freed (its refcount is decremented). */ static struct extent_buffer * -tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, - u64 time_seq) +tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct btrfs_path *path, + struct extent_buffer *eb, u64 time_seq) { struct extent_buffer *eb_rewin; struct tree_mod_elem *tm; @@ -1207,12 +1207,15 @@ tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, if (!tm) return eb; + btrfs_set_path_blocking(path); + btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); + if (tm->op == MOD_LOG_KEY_REMOVE_WHILE_FREEING) { BUG_ON(tm->slot != 0); eb_rewin = alloc_dummy_extent_buffer(eb->start, fs_info->tree_root->nodesize); if (!eb_rewin) { - btrfs_tree_read_unlock(eb); + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); return NULL; } @@ -1224,13 +1227,14 @@ tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, } else { eb_rewin = btrfs_clone_extent_buffer(eb); if (!eb_rewin) { - btrfs_tree_read_unlock(eb); + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); return NULL; } } - btrfs_tree_read_unlock(eb); + btrfs_clear_path_blocking(path, NULL, BTRFS_READ_LOCK); + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); extent_buffer_get(eb_rewin); @@ -1294,8 +1298,9 @@ get_old_root(struct btrfs_root *root, u64 time_seq) free_extent_buffer(eb_root); eb = alloc_dummy_extent_buffer(logical, root->nodesize); } else { + btrfs_set_lock_blocking_rw(eb_root, BTRFS_READ_LOCK); eb = btrfs_clone_extent_buffer(eb_root); - btrfs_tree_read_unlock(eb_root); + btrfs_tree_read_unlock_blocking(eb_root); free_extent_buffer(eb_root); } @@ -2779,7 +2784,7 @@ again: btrfs_clear_path_blocking(p, b, BTRFS_READ_LOCK); } - b = tree_mod_log_rewind(root->fs_info, b, time_seq); + b = tree_mod_log_rewind(root->fs_info, p, b, time_seq); if (!b) { ret = -ENOMEM; goto done; diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index ef25c7d048e2..a8d662b31830 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4340,12 +4340,12 @@ struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src) struct extent_buffer *new; unsigned long num_pages = num_extent_pages(src->start, src->len); - new = __alloc_extent_buffer(NULL, src->start, src->len, GFP_ATOMIC); + new = __alloc_extent_buffer(NULL, src->start, src->len, GFP_NOFS); if (new == NULL) return NULL; for (i = 0; i < num_pages; i++) { - p = alloc_page(GFP_ATOMIC); + p = alloc_page(GFP_NOFS); if (!p) { btrfs_release_extent_buffer(new); return NULL; @@ -4369,12 +4369,12 @@ struct extent_buffer *alloc_dummy_extent_buffer(u64 start, unsigned long len) unsigned long num_pages = num_extent_pages(0, len); unsigned long i; - eb = __alloc_extent_buffer(NULL, start, len, GFP_ATOMIC); + eb = __alloc_extent_buffer(NULL, start, len, GFP_NOFS); if (!eb) return NULL; for (i = 0; i < num_pages; i++) { - eb->pages[i] = alloc_page(GFP_ATOMIC); + eb->pages[i] = alloc_page(GFP_NOFS); if (!eb->pages[i]) goto err; } |