2023-03-11 09:07:00

by Kemeng Shi

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Subject: [PATCH 0/2] two cleanups for mballoc

Hi, this series contain two cleanups to fix typo and remove unnecessary
pointer dereference. Thanks!

Kemeng Shi (2):
ext4: fix typos in mballoc
ext4: avoid unnecessary pointer dereference in
ext4_mb_normalize_request

fs/ext4/mballoc.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

--
2.30.0



2023-03-11 09:07:04

by Kemeng Shi

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Subject: [PATCH 1/2] ext4: fix typos in mballoc

pa_plen -> pa_len
pa_start -> pa_pstart

Signed-off-by: Kemeng Shi <[email protected]>
---
fs/ext4/mballoc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 85d5e219933f..13dce6f07fa4 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4146,7 +4146,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
* provide gurantee on number of contiguous blocks allocation since that
* depends upon free space left, etc).
* In case of inode pa, later we use the allocated blocks
- * [pa_start + fe_logical - pa_lstart, fe_len/size] from the preallocated
+ * [pa_pstart + fe_logical - pa_lstart, fe_len/size] from the preallocated
* range of goal/best blocks [start, size] to put it at the
* ac_o_ex.fe_logical extent of this inode.
* (See ext4_mb_use_inode_pa() for more details)
@@ -4298,7 +4298,7 @@ static void ext4_mb_use_group_pa(struct ext4_allocation_context *ac,
ac->ac_status = AC_STATUS_FOUND;
ac->ac_pa = pa;

- /* we don't correct pa_pstart or pa_plen here to avoid
+ /* we don't correct pa_pstart or pa_len here to avoid
* possible race when the group is being loaded concurrently
* instead we correct pa later, after blocks are marked
* in on-disk bitmap -- see ext4_mb_release_context()
--
2.30.0


2023-03-13 02:13:11

by Ritesh Harjani

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Subject: Re: [PATCH 1/2] ext4: fix typos in mballoc

Kemeng Shi <[email protected]> writes:

> pa_plen -> pa_len
> pa_start -> pa_pstart
>
> Signed-off-by: Kemeng Shi <[email protected]>
> ---
> fs/ext4/mballoc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)

Looks good to me. Please feel free to add -

Reviewed-by: Ritesh Harjani (IBM) <[email protected]>

>
> diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
> index 85d5e219933f..13dce6f07fa4 100644
> --- a/fs/ext4/mballoc.c
> +++ b/fs/ext4/mballoc.c
> @@ -4146,7 +4146,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
> * provide gurantee on number of contiguous blocks allocation since that
> * depends upon free space left, etc).
> * In case of inode pa, later we use the allocated blocks
> - * [pa_start + fe_logical - pa_lstart, fe_len/size] from the preallocated
> + * [pa_pstart + fe_logical - pa_lstart, fe_len/size] from the preallocated
> * range of goal/best blocks [start, size] to put it at the
> * ac_o_ex.fe_logical extent of this inode.
> * (See ext4_mb_use_inode_pa() for more details)
> @@ -4298,7 +4298,7 @@ static void ext4_mb_use_group_pa(struct ext4_allocation_context *ac,
> ac->ac_status = AC_STATUS_FOUND;
> ac->ac_pa = pa;
>
> - /* we don't correct pa_pstart or pa_plen here to avoid
> + /* we don't correct pa_pstart or pa_len here to avoid
> * possible race when the group is being loaded concurrently
> * instead we correct pa later, after blocks are marked
> * in on-disk bitmap -- see ext4_mb_release_context()
> --
> 2.30.0

2023-03-17 01:53:08

by Theodore Ts'o

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Subject: Re: [PATCH 0/2] two cleanups for mballoc

On Sun, 12 Mar 2023 01:09:47 +0800, Kemeng Shi wrote:
> pointer dereference. Thanks!
>
> Kemeng Shi (2):
> ext4: fix typos in mballoc
> ext4: avoid unnecessary pointer dereference in
> ext4_mb_normalize_request
>
> [...]

Applied, thanks!

[1/2] ext4: fix typos in mballoc
commit: dac2da4882d847ed83155c2809e93bc2348677c8
[2/2] ext4: avoid unnecessary pointer dereference in ext4_mb_normalize_request
commit: e15eeffe99e11512e658f19af7952a57aede8915

Best regards,
--
Theodore Ts'o <[email protected]>