From: Jeff Mahoney <jeffm@suse.com>
To: BtrFS List <linux-btrfs@vger.kernel.org>
Cc: Chris Mason <chris.mason@oracle.com>
Subject: [patch 09/65] btrfs: pin_down_extent should return void
Date: Mon, 03 Oct 2011 23:22:39 -0400 [thread overview]
Message-ID: <20111004032300.955928783@suse.com> (raw)
In-Reply-To: 20111004032230.458853274@suse.com
pin_down_extent performs some operations which can't fail and then calls
set_extent_dirty, which has two failure cases via set_extent_bit:
1) Return -EEXIST if exclusive bits are set
- Since it doesn't use any exclusive bits, this failure case can't
occur.
2) Return -ENOMEM if memory can't be allocated
- Since it's called with gfp_flags & __GFP_NOFAIL, this failure case
can't occur.
With no failure cases, it should return void.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/extent-tree.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4175,9 +4175,9 @@ static u64 first_logical_byte(struct btr
return bytenr;
}
-static int pin_down_extent(struct btrfs_root *root,
- struct btrfs_block_group_cache *cache,
- u64 bytenr, u64 num_bytes, int reserved)
+static void pin_down_extent(struct btrfs_root *root,
+ struct btrfs_block_group_cache *cache,
+ u64 bytenr, u64 num_bytes, int reserved)
{
spin_lock(&cache->space_info->lock);
spin_lock(&cache->lock);
@@ -4194,7 +4194,6 @@ static int pin_down_extent(struct btrfs_
/* __GFP_NOFAIL means it can't return -ENOMEM */
set_extent_dirty(root->fs_info->pinned_extents, bytenr,
bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL);
- return 0;
}
/*
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 ` Jeff Mahoney [this message]
2011-10-04 3:22 ` [patch 10/65] btrfs: btrfs_pin_extent " Jeff Mahoney
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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