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btrfs: Remove redundant argument of flush_space 

All callers of flush_space pass the same number for orig/num_bytes
arguments. Let's remove one of the numbers and also modify the trace
point to show only a single number - bytes requested.

Seems that last point where the two parameters were treated differently
is before the ticketed enospc rework.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2017-07-11 13:25:13 +03:00 committed by David Sterba
parent 6c6b5a39c4
commit 7bdd6277e0
2 changed files with 12 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
fs/btrfs/extent-tree.c
View File

@ -4906,7 +4906,7 @@ struct reserve_ticket {
static int flush_space(struct btrfs_fs_info *fs_info,
struct btrfs_space_info *space_info, u64 num_bytes,
u64 orig_bytes, int state)
int state)
{
struct btrfs_root *root = fs_info->extent_root;
struct btrfs_trans_handle *trans;
@ -4931,7 +4931,7 @@ static int flush_space(struct btrfs_fs_info *fs_info,
break;
case FLUSH_DELALLOC:
case FLUSH_DELALLOC_WAIT:
shrink_delalloc(fs_info, num_bytes * 2, orig_bytes,
shrink_delalloc(fs_info, num_bytes * 2, num_bytes,
state == FLUSH_DELALLOC_WAIT);
break;
case ALLOC_CHUNK:
@ -4949,15 +4949,15 @@ static int flush_space(struct btrfs_fs_info *fs_info,
break;
case COMMIT_TRANS:
ret = may_commit_transaction(fs_info, space_info,
orig_bytes, 0);
num_bytes, 0);
break;
default:
ret = -ENOSPC;
break;
}
trace_btrfs_flush_space(fs_info, space_info->flags, num_bytes,
orig_bytes, state, ret);
trace_btrfs_flush_space(fs_info, space_info->flags, num_bytes, state,
ret);
return ret;
}
@ -5063,8 +5063,7 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work)
struct reserve_ticket *ticket;
int ret;
ret = flush_space(fs_info, space_info, to_reclaim, to_reclaim,
flush_state);
ret = flush_space(fs_info, space_info, to_reclaim, flush_state);
spin_lock(&space_info->lock);
if (list_empty(&space_info->tickets)) {
space_info->flush = 0;
@ -5120,8 +5119,7 @@ static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info,
spin_unlock(&space_info->lock);
do {
flush_space(fs_info, space_info, to_reclaim, to_reclaim,
flush_state);
flush_space(fs_info, space_info, to_reclaim, flush_state);
flush_state++;
spin_lock(&space_info->lock);
if (ticket->bytes == 0) {

13
include/trace/events/btrfs.h
View File

@ -1011,15 +1011,14 @@ TRACE_EVENT(btrfs_trigger_flush,
TRACE_EVENT(btrfs_flush_space,
TP_PROTO(const struct btrfs_fs_info *fs_info, u64 flags, u64 num_bytes,
u64 orig_bytes, int state, int ret),
int state, int ret),
TP_ARGS(fs_info, flags, num_bytes, orig_bytes, state, ret),
TP_ARGS(fs_info, flags, num_bytes, state, ret),
TP_STRUCT__entry(
__array( u8, fsid, BTRFS_UUID_SIZE )
__field( u64, flags )
__field( u64, num_bytes )
__field( u64, orig_bytes )
__field( int, state )
__field( int, ret )
),
@ -1028,19 +1027,17 @@ TRACE_EVENT(btrfs_flush_space,
memcpy(__entry->fsid, fs_info->fsid, BTRFS_UUID_SIZE);
__entry->flags = flags;
__entry->num_bytes = num_bytes;
__entry->orig_bytes = orig_bytes;
__entry->state = state;
__entry->ret = ret;
),
TP_printk("%pU: state=%d(%s) flags=%llu(%s) num_bytes=%llu "
"orig_bytes=%llu ret=%d", __entry->fsid, __entry->state,
TP_printk("%pU: state=%d(%s) flags=%llu(%s) num_bytes=%llu ret=%d",
__entry->fsid, __entry->state,
show_flush_state(__entry->state),
(unsigned long long)__entry->flags,
__print_flags((unsigned long)__entry->flags, "|",
BTRFS_GROUP_FLAGS),
(unsigned long long)__entry->num_bytes,
(unsigned long long)__entry->orig_bytes, __entry->ret)
(unsigned long long)__entry->num_bytes, __entry->ret)
);
DECLARE_EVENT_CLASS(btrfs__reserved_extent,