* [PATCH] btrfs: drop unused argument of calcu_metadata_size()
@ 2024-04-24 6:38 Naohiro Aota
2024-04-24 6:53 ` Qu Wenruo
2024-04-24 7:57 ` Johannes Thumshirn
0 siblings, 2 replies; 3+ messages in thread
From: Naohiro Aota @ 2024-04-24 6:38 UTC (permalink / raw)
To: linux-btrfs; +Cc: Naohiro Aota
calcu_metadata_size() has a "reserve" argument, but the only caller always
set it to "1". The other usage (reserve = 0) is dropped by a commit
0647bf564f1e ("Btrfs: improve forever loop when doing balance relocation"),
which is more than 10 years ago. Drop the argument and simplify the code.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
fs/btrfs/relocation.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index bd573a0ec270..22086e840801 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2281,8 +2281,7 @@ struct btrfs_root *select_one_root(struct btrfs_backref_node *node)
}
static noinline_for_stack
-u64 calcu_metadata_size(struct reloc_control *rc,
- struct btrfs_backref_node *node, int reserve)
+u64 calcu_metadata_size(struct reloc_control *rc, struct btrfs_backref_node *node)
{
struct btrfs_fs_info *fs_info = rc->extent_root->fs_info;
struct btrfs_backref_node *next = node;
@@ -2291,12 +2290,12 @@ u64 calcu_metadata_size(struct reloc_control *rc,
u64 num_bytes = 0;
int index = 0;
- BUG_ON(reserve && node->processed);
+ BUG_ON(node->processed);
while (next) {
cond_resched();
while (1) {
- if (next->processed && (reserve || next != node))
+ if (next->processed)
break;
num_bytes += fs_info->nodesize;
@@ -2324,7 +2323,7 @@ static int reserve_metadata_space(struct btrfs_trans_handle *trans,
int ret;
u64 tmp;
- num_bytes = calcu_metadata_size(rc, node, 1) * 2;
+ num_bytes = calcu_metadata_size(rc, node) * 2;
trans->block_rsv = rc->block_rsv;
rc->reserved_bytes += num_bytes;
--
2.44.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] btrfs: drop unused argument of calcu_metadata_size()
2024-04-24 6:38 [PATCH] btrfs: drop unused argument of calcu_metadata_size() Naohiro Aota
@ 2024-04-24 6:53 ` Qu Wenruo
2024-04-24 7:57 ` Johannes Thumshirn
1 sibling, 0 replies; 3+ messages in thread
From: Qu Wenruo @ 2024-04-24 6:53 UTC (permalink / raw)
To: Naohiro Aota, linux-btrfs
在 2024/4/24 16:08, Naohiro Aota 写道:
> calcu_metadata_size() has a "reserve" argument, but the only caller always
> set it to "1". The other usage (reserve = 0) is dropped by a commit
> 0647bf564f1e ("Btrfs: improve forever loop when doing balance relocation"),
> which is more than 10 years ago. Drop the argument and simplify the code.
>
> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Thanks,
Qu
> ---
> fs/btrfs/relocation.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
> index bd573a0ec270..22086e840801 100644
> --- a/fs/btrfs/relocation.c
> +++ b/fs/btrfs/relocation.c
> @@ -2281,8 +2281,7 @@ struct btrfs_root *select_one_root(struct btrfs_backref_node *node)
> }
>
> static noinline_for_stack
> -u64 calcu_metadata_size(struct reloc_control *rc,
> - struct btrfs_backref_node *node, int reserve)
> +u64 calcu_metadata_size(struct reloc_control *rc, struct btrfs_backref_node *node)
> {
> struct btrfs_fs_info *fs_info = rc->extent_root->fs_info;
> struct btrfs_backref_node *next = node;
> @@ -2291,12 +2290,12 @@ u64 calcu_metadata_size(struct reloc_control *rc,
> u64 num_bytes = 0;
> int index = 0;
>
> - BUG_ON(reserve && node->processed);
> + BUG_ON(node->processed);
>
> while (next) {
> cond_resched();
> while (1) {
> - if (next->processed && (reserve || next != node))
> + if (next->processed)
> break;
>
> num_bytes += fs_info->nodesize;
> @@ -2324,7 +2323,7 @@ static int reserve_metadata_space(struct btrfs_trans_handle *trans,
> int ret;
> u64 tmp;
>
> - num_bytes = calcu_metadata_size(rc, node, 1) * 2;
> + num_bytes = calcu_metadata_size(rc, node) * 2;
>
> trans->block_rsv = rc->block_rsv;
> rc->reserved_bytes += num_bytes;
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] btrfs: drop unused argument of calcu_metadata_size()
2024-04-24 6:38 [PATCH] btrfs: drop unused argument of calcu_metadata_size() Naohiro Aota
2024-04-24 6:53 ` Qu Wenruo
@ 2024-04-24 7:57 ` Johannes Thumshirn
1 sibling, 0 replies; 3+ messages in thread
From: Johannes Thumshirn @ 2024-04-24 7:57 UTC (permalink / raw)
To: Naohiro Aota, linux-btrfs
Looks good,
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2024-04-24 6:38 [PATCH] btrfs: drop unused argument of calcu_metadata_size() Naohiro Aota
2024-04-24 6:53 ` Qu Wenruo
2024-04-24 7:57 ` Johannes Thumshirn
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