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Btrfs: remove unused mutex from struct 'btrfs_fs_info' 

The code using 'ordered_extent_flush_mutex' mutex has removed by below
commit.
 - 8d875f95da
   btrfs: disable strict file flushes for renames and truncates
But the mutex still lives in struct 'btrfs_fs_info'.

So, this patch removes the mutex from struct 'btrfs_fs_info' and its
initialization code.

Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Byongho Lee 2015-07-10 13:10:26 +09:00 committed by Chris Mason
parent 4a770891d9
commit a4027a20c5
2 changed files with 0 additions and 7 deletions
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6
fs/btrfs/ctree.h
View File

@ -1518,12 +1518,6 @@ struct btrfs_fs_info {
*/
struct mutex ordered_operations_mutex;
/*
* Same as ordered_operations_mutex except this is for ordered extents
* and not the operations.
*/
struct mutex ordered_extent_flush_mutex;
struct rw_semaphore commit_root_sem;
struct rw_semaphore cleanup_work_sem;

1
fs/btrfs/disk-io.c
View File

@ -2608,7 +2608,6 @@ int open_ctree(struct super_block *sb,
mutex_init(&fs_info->ordered_operations_mutex);
mutex_init(&fs_info->ordered_extent_flush_mutex);
mutex_init(&fs_info->tree_log_mutex);
mutex_init(&fs_info->chunk_mutex);
mutex_init(&fs_info->transaction_kthread_mutex);