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btrfs: remove useless comments

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Fixes: ("btrfs: update btrfs_space_info's bytes_may_use timely")

Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Xiaoguang Wang 2016-09-23 12:38:50 +08:00 committed by David Sterba
parent ebce0e01b9
commit 745699ef62
1 changed files with 3 additions and 10 deletions
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13
fs/btrfs/extent-tree.c
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@ -6499,16 +6499,9 @@ void btrfs_wait_block_group_reservations(struct btrfs_block_group_cache *bg)
* @num_bytes: The number of bytes in question
* @delalloc: The blocks are allocated for the delalloc write
*
* This is called by the allocator when it reserves space. Metadata
* reservations should be called with RESERVE_ALLOC so we do the proper
* ENOSPC accounting. For data we handle the reservation through clearing the
* delalloc bits in the io_tree. We have to do this since we could end up
* allocating less disk space for the amount of data we have reserved in the
* case of compression.
*
* If this is a reservation and the block group has become read only we cannot
* make the reservation and return -EAGAIN, otherwise this function always
* succeeds.
* This is called by the allocator when it reserves space. If this is a
* reservation and the block group has become read only we cannot make the
* reservation and return -EAGAIN, otherwise this function always succeeds.
*/
static int btrfs_add_reserved_bytes(struct btrfs_block_group_cache *cache,
u64 ram_bytes, u64 num_bytes, int delalloc)