2023-12-13 00:09:30

by Al Viro

Subject: [PATCH 3/4] minixfs: Use dir_put_page() in minix_unlink() and minix_rename()

... rather than open-coding it there. Counterpart of the
corresponding fs/sysv commit from Fabio's series...

Signed-off-by: Al Viro <[email protected]>
---
fs/minix/dir.c | 6 ------
fs/minix/minix.h | 5 +++++
fs/minix/namei.c | 12 ++++--------
3 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index 4e5483adea40..ccb6c47fd7fe 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -26,12 +26,6 @@ const struct file_operations minix_dir_operations = {
.fsync = generic_file_fsync,
};

-static inline void dir_put_page(struct page *page)
-{
- kunmap(page);
- put_page(page);
-}
-
/*
* Return the offset into page `page_nr' of the last valid
* byte in that page, plus one.
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index d493507c064f..cb42b6cf7909 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -64,6 +64,11 @@ extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
extern unsigned V1_minix_blocks(loff_t, struct super_block *);
extern unsigned V2_minix_blocks(loff_t, struct super_block *);

+static inline void dir_put_page(struct page *page)
+{
+ kunmap(page);
+ put_page(page);
+}
extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
extern int minix_add_link(struct dentry*, struct inode*);
extern int minix_delete_entry(struct minix_dir_entry*, struct page*);
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 114084d5636a..20923a15e30a 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -149,8 +149,7 @@ static int minix_unlink(struct inode * dir, struct dentry *dentry)
if (!de)
return -ENOENT;
err = minix_delete_entry(de, page);
- kunmap(page);
- put_page(page);
+ dir_put_page(page);

if (err)
return err;
@@ -242,13 +241,10 @@ static int minix_rename(struct mnt_idmap *idmap,
inode_dec_link_count(old_dir);
}
out_dir:
- if (dir_de) {
- kunmap(dir_page);
- put_page(dir_page);
- }
+ if (dir_de)
+ dir_put_page(dir_page);
out_old:
- kunmap(old_page);
- put_page(old_page);
+ dir_put_page(old_page);
out:
return err;
}
--
2.39.2

2023-12-14 12:03:20

by Fabio M. De Francesco

Subject: Re: [PATCH 3/4] minixfs: Use dir_put_page() in minix_unlink() and minix_rename()

On Wednesday, 13 December 2023 01:08:48 CET Al Viro wrote:
> ... rather than open-coding it there. Counterpart of the
> corresponding fs/sysv commit from Fabio's series...

Yes, I can still remember this code ;)

> Signed-off-by: Al Viro <[email protected]>
> ---
> fs/minix/dir.c | 6 ------
> fs/minix/minix.h | 5 +++++
> fs/minix/namei.c | 12 ++++--------
> 3 files changed, 9 insertions(+), 14 deletions(-)

Reviewed-by: Fabio M. De Francesco <[email protected]>

> diff --git a/fs/minix/dir.c b/fs/minix/dir.c
> index 4e5483adea40..ccb6c47fd7fe 100644
> --- a/fs/minix/dir.c
> +++ b/fs/minix/dir.c
> @@ -26,12 +26,6 @@ const struct file_operations minix_dir_operations = {
> .fsync = generic_file_fsync,
> };
>
> -static inline void dir_put_page(struct page *page)
> -{
> - kunmap(page);
> - put_page(page);
> -}
> -
> /*
> * Return the offset into page `page_nr' of the last valid
> * byte in that page, plus one.
> diff --git a/fs/minix/minix.h b/fs/minix/minix.h
> index d493507c064f..cb42b6cf7909 100644
> --- a/fs/minix/minix.h
> +++ b/fs/minix/minix.h
> @@ -64,6 +64,11 @@ extern int V2_minix_get_block(struct inode *, long,
> struct buffer_head *, int); extern unsigned V1_minix_blocks(loff_t, struct
> super_block *);
> extern unsigned V2_minix_blocks(loff_t, struct super_block *);
>
> +static inline void dir_put_page(struct page *page)
> +{
> + kunmap(page);
> + put_page(page);
> +}
> extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct
> page**); extern int minix_add_link(struct dentry*, struct inode*);
> extern int minix_delete_entry(struct minix_dir_entry*, struct page*);
> diff --git a/fs/minix/namei.c b/fs/minix/namei.c
> index 114084d5636a..20923a15e30a 100644
> --- a/fs/minix/namei.c
> +++ b/fs/minix/namei.c
> @@ -149,8 +149,7 @@ static int minix_unlink(struct inode * dir, struct
> dentry *dentry) if (!de)
> return -ENOENT;
> err = minix_delete_entry(de, page);
> - kunmap(page);
> - put_page(page);
> + dir_put_page(page);
>
> if (err)
> return err;
> @@ -242,13 +241,10 @@ static int minix_rename(struct mnt_idmap *idmap,
> inode_dec_link_count(old_dir);
> }
> out_dir:
> - if (dir_de) {
> - kunmap(dir_page);
> - put_page(dir_page);
> - }
> + if (dir_de)
> + dir_put_page(dir_page);
> out_old:
> - kunmap(old_page);
> - put_page(old_page);
> + dir_put_page(old_page);
> out:
> return err;
> }