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Message-Id: <20231213000849.2748576-1-viro@zeniv.linux.org.uk> Date: Wed, 13 Dec 2023 00:08:46 +0000 From: Al Viro <viro@...iv.linux.org.uk> To: linux-fsdevel@...r.kernel.org Cc: linux-kernel@...r.kernel.org Subject: [PATCH 1/4] minixfs: use offset_in_page() It's cheaper and more idiomatic than subtracting page_address() of the corresponding page... Signed-off-by: Al Viro <viro@...iv.linux.org.uk> --- fs/minix/dir.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/minix/dir.c b/fs/minix/dir.c index 62c313fc9a49..34a5d17f0796 100644 --- a/fs/minix/dir.c +++ b/fs/minix/dir.c @@ -268,7 +268,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode) return -EINVAL; got_it: - pos = page_offset(page) + p - (char *)page_address(page); + pos = page_offset(page) + offset_in_page(p); err = minix_prepare_chunk(page, pos, sbi->s_dirsize); if (err) goto out_unlock; @@ -296,8 +296,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode) int minix_delete_entry(struct minix_dir_entry *de, struct page *page) { struct inode *inode = page->mapping->host; - char *kaddr = page_address(page); - loff_t pos = page_offset(page) + (char*)de - kaddr; + loff_t pos = page_offset(page) + offset_in_page(de); struct minix_sb_info *sbi = minix_sb(inode->i_sb); unsigned len = sbi->s_dirsize; int err; @@ -421,8 +420,7 @@ int minix_set_link(struct minix_dir_entry *de, struct page *page, { struct inode *dir = page->mapping->host; struct minix_sb_info *sbi = minix_sb(dir->i_sb); - loff_t pos = page_offset(page) + - (char *)de-(char*)page_address(page); + loff_t pos = page_offset(page) + offset_in_page(de); int err; lock_page(page); -- 2.39.2
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