From: Jeff Mahoney <jeffm@suse.com>
To: BtrFS List <linux-btrfs@vger.kernel.org>
Cc: Chris Mason <chris.mason@oracle.com>
Subject: [patch 10/65] btrfs: btrfs_pin_extent error push-up
Date: Mon, 03 Oct 2011 23:22:40 -0400 [thread overview]
Message-ID: <20111004032301.069543593@suse.com> (raw)
In-Reply-To: 20111004032230.458853274@suse.com
btrfs_pin_extent looks up a block group and then calls pin_down_extent
with it. If the lookup fails, it should return -ENOENT to allow callers
to handle the error condition. For the three existing callers, it is
a logic error if the lookup fails and a panic will occur.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/extent-tree.c | 20 +++++++++++++++-----
fs/btrfs/tree-log.c | 10 +++++++---
2 files changed, 22 insertions(+), 8 deletions(-)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2075,8 +2075,14 @@ static int run_one_delayed_ref(struct bt
BUG_ON(extent_op);
head = btrfs_delayed_node_to_head(node);
if (insert_reserved) {
- btrfs_pin_extent(root, node->bytenr,
- node->num_bytes, 1);
+ ret = btrfs_pin_extent(root, node->bytenr,
+ node->num_bytes, 1);
+ if (ret)
+ btrfs_panic(root->fs_info, ret,
+ "Cannot pin extent in range "
+ "%llu(%llu)\n",
+ node->bytenr, node->num_bytes);
+
if (head->is_data) {
ret = btrfs_del_csums(trans, root,
node->bytenr,
@@ -4205,7 +4211,8 @@ int btrfs_pin_extent(struct btrfs_root *
struct btrfs_block_group_cache *cache;
cache = btrfs_lookup_block_group(root->fs_info, bytenr);
- BUG_ON(!cache);
+ if (cache == NULL)
+ return -ENOENT;
pin_down_extent(root, cache, bytenr, num_bytes, reserved);
@@ -4765,8 +4772,11 @@ int btrfs_free_extent(struct btrfs_trans
if (root_objectid == BTRFS_TREE_LOG_OBJECTID) {
WARN_ON(owner >= BTRFS_FIRST_FREE_OBJECTID);
/* unlocks the pinned mutex */
- btrfs_pin_extent(root, bytenr, num_bytes, 1);
- ret = 0;
+ ret = btrfs_pin_extent(root, bytenr, num_bytes, 1);
+ if (ret)
+ btrfs_panic(root->fs_info, ret, "Cannot pin "
+ "extent in range %llu(%llu)\n",
+ bytenr, num_bytes);
} else if (owner < BTRFS_FIRST_FREE_OBJECTID) {
ret = btrfs_add_delayed_tree_ref(trans, bytenr, num_bytes,
parent, root_objectid, (int)owner,
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -275,9 +275,13 @@ static int process_one_buffer(struct btr
struct extent_buffer *eb,
struct walk_control *wc, u64 gen)
{
- if (wc->pin)
- btrfs_pin_extent(log->fs_info->extent_root,
- eb->start, eb->len, 0);
+ if (wc->pin) {
+ int ret = btrfs_pin_extent(log->fs_info->extent_root,
+ eb->start, eb->len, 0);
+ if (ret)
+ btrfs_panic(log->fs_info, ret, "Cannot pin extent in "
+ "range %llu(%llu)\n", eb->start, eb->len);
+ }
if (btrfs_buffer_uptodate(eb, gen)) {
if (wc->write)
next prev parent reply other threads:[~2011-10-04 3:22 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-04 3:22 [patch 00/65] Error handling patchset v3 Jeff Mahoney
2011-10-04 3:22 ` [patch 01/65] btrfs: Add btrfs_panic() Jeff Mahoney
2011-10-10 16:35 ` David Sterba
2011-10-10 16:42 ` David Sterba
2011-10-10 16:54 ` Jeff Mahoney
2011-10-04 3:22 ` [patch 02/65] btrfs: Catch locking failures in {set,clear}_extent_bit Jeff Mahoney
2011-10-04 3:22 ` [patch 03/65] btrfs: Panic on bad rbtree operations Jeff Mahoney
2011-10-04 3:22 ` [patch 04/65] btrfs: Simplify btrfs_insert_root Jeff Mahoney
2011-10-04 3:22 ` [patch 05/65] btrfs: set_extent_bit error push-up Jeff Mahoney
2011-10-04 3:22 ` [patch 06/65] btrfs: lock_extent " Jeff Mahoney
2011-10-04 3:22 ` [patch 07/65] btrfs: clear_extent_bit " Jeff Mahoney
2011-10-04 3:22 ` [patch 08/65] btrfs: unlock_extent " Jeff Mahoney
2011-10-04 3:22 ` [patch 09/65] btrfs: pin_down_extent should return void Jeff Mahoney
2011-10-04 3:22 ` Jeff Mahoney [this message]
2011-10-04 3:22 ` [patch 11/65] btrfs: btrfs_drop_snapshot should return int Jeff Mahoney
2011-10-04 3:22 ` [patch 12/65] btrfs: btrfs_start_transaction non-looped error push-up Jeff Mahoney
2011-10-04 3:22 ` [patch 13/65] btrfs: find_and_setup_root " Jeff Mahoney
2011-10-04 3:22 ` [patch 14/65] btrfs: btrfs_update_root " Jeff Mahoney
2011-10-04 3:22 ` [patch 15/65] btrfs: set_range_writeback should return void Jeff Mahoney
2011-10-04 3:22 ` [patch 16/65] btrfs: wait_on_state " Jeff Mahoney
2011-10-04 3:22 ` [patch 17/65] btrfs: wait_extent_bit " Jeff Mahoney
2011-10-04 3:22 ` [patch 18/65] btrfs: __unlock_for_delalloc " Jeff Mahoney
2011-10-04 3:22 ` [patch 19/65] btrfs: check_page_uptodate " Jeff Mahoney
2011-10-04 3:22 ` [patch 20/65] btrfs: check_page_locked " Jeff Mahoney
2011-10-04 3:22 ` [patch 21/65] btrfs: check_page_writeback " Jeff Mahoney
2011-10-04 3:22 ` [patch 22/65] btrfs: clear_extent_buffer_dirty " Jeff Mahoney
2011-10-04 3:22 ` [patch 23/65] btrfs: btrfs_cleanup_fs_uuids " Jeff Mahoney
2011-10-04 3:22 ` [patch 24/65] btrfs: run_scheduled_bios " Jeff Mahoney
2011-10-04 3:22 ` [patch 25/65] btrfs: btrfs_close_extra_devices " Jeff Mahoney
2011-10-04 3:22 ` [patch 26/65] btrfs: schedule_bio " Jeff Mahoney
2011-10-04 3:22 ` [patch 27/65] btrfs: fill_device_from_item " Jeff Mahoney
2011-10-04 3:22 ` [patch 28/65] btrfs: btrfs_queue_worker " Jeff Mahoney
2011-10-04 3:22 ` [patch 29/65] btrfs: run_ordered_completions " Jeff Mahoney
2011-10-04 3:23 ` [patch 30/65] btrfs: btrfs_stop_workers " Jeff Mahoney
2011-10-04 3:23 ` [patch 31/65] btrfs: btrfs_requeue_work " Jeff Mahoney
2011-10-04 3:23 ` [patch 32/65] btrfs: tree-log: btrfs_end_log_trans " Jeff Mahoney
2011-10-04 3:23 ` [patch 33/65] btrfs: tree-log: wait_for_writer " Jeff Mahoney
2011-10-04 3:23 ` [patch 34/65] btrfs: btrfs_init_compress " Jeff Mahoney
2011-10-04 3:23 ` [patch 35/65] btrfs: btrfs_invalidate_inodes " Jeff Mahoney
2011-10-04 3:23 ` [patch 36/65] btrfs: __setup_root " Jeff Mahoney
2011-10-04 3:23 ` [patch 37/65] btrfs: btrfs_destroy_delalloc_inodes " Jeff Mahoney
2011-10-04 3:23 ` [patch 38/65] btrfs: btrfs_prepare_extent_commit " Jeff Mahoney
2011-10-04 3:23 ` [patch 39/65] btrfs: btrfs_set_block_group_rw " Jeff Mahoney
2011-10-04 3:23 ` [patch 40/65] btrfs: setup_inline_extent_backref " Jeff Mahoney
2011-10-04 3:23 ` [patch 41/65] btrfs: btrfs_run_defrag_inodes " Jeff Mahoney
2011-10-04 3:23 ` [patch 42/65] btrfs: Simplify btrfs_submit_bio_hook Jeff Mahoney
2011-10-04 3:23 ` [patch 43/65] btrfs: Factor out tree->ops->merge_bio_hook call Jeff Mahoney
2011-10-04 3:23 ` [patch 44/65] btrfs: ->submit_bio_hook error push-up Jeff Mahoney
2011-10-04 3:23 ` [patch 45/65] btrfs: __add_reloc_root " Jeff Mahoney
2011-10-04 3:23 ` [patch 46/65] btrfs: fixup_low_keys should return void Jeff Mahoney
2011-10-04 3:23 ` [patch 47/65] btrfs: setup_items_for_insert " Jeff Mahoney
2011-10-04 3:23 ` [patch 48/65] btrfs: del_ptr " Jeff Mahoney
2011-10-04 3:23 ` [patch 49/65] btrfs: insert_ptr " Jeff Mahoney
2011-10-04 3:23 ` [patch 50/65] btrfs: add_delayed_ref_head " Jeff Mahoney
2011-10-04 3:23 ` [patch 51/65] btrfs: add_delayed_tree_ref " Jeff Mahoney
2011-10-04 3:23 ` [patch 52/65] btrfs: add_delayed_data_ref " Jeff Mahoney
2011-10-04 3:23 ` [patch 53/65] btrfs: Fix kfree of member instead of structure Jeff Mahoney
2011-10-04 3:23 ` [patch 54/65] btrfs: Use mempools for delayed refs Jeff Mahoney
2011-10-04 3:23 ` [patch 55/65] btrfs: Delayed ref mempool functions should return void Jeff Mahoney
2011-10-04 3:23 ` [patch 56/65] btrfs: btrfs_inc_extent_ref void return prep Jeff Mahoney
2011-10-04 3:23 ` [patch 57/65] btrfs: btrfs_free_extent " Jeff Mahoney
2011-10-04 3:23 ` [patch 58/65] btrfs: __btrfs_mod_refs process_func should return void Jeff Mahoney
2011-10-04 3:23 ` [patch 59/65] btrfs: __btrfs_mod_ref " Jeff Mahoney
2011-10-04 3:23 ` [patch 60/65] btrfs: clean_tree_block " Jeff Mahoney
2011-10-04 3:23 ` [patch 61/65] btrfs: btrfs_truncate_item " Jeff Mahoney
2011-10-04 3:23 ` [patch 62/65] btrfs: btrfs_extend_item " Jeff Mahoney
2011-10-04 3:23 ` [patch 63/65] btrfs: end_compressed_writeback " Jeff Mahoney
2011-10-04 3:23 ` [patch 64/65] btrfs: copy_for_split " Jeff Mahoney
2011-10-04 3:23 ` [patch 65/65] btrfs: update_inline_extent_backref " Jeff Mahoney
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