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namei: Merge page_symlink() and __page_symlink()

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There are no callers of __page_symlink() left, so we can remove that
entry point.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-02-22 09:40:54 -05:00
parent a125d2aec3
commit 56f5746c41
3 changed files with 3 additions and 14 deletions
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2
Documentation/filesystems/porting.rst
View file

@ -624,7 +624,7 @@ any symlink that might use page_follow_link_light/page_put_link() must
have inode_nohighmem(inode) called before anything might start playing with
its pagecache. No highmem pages should end up in the pagecache of such
symlinks. That includes any preseeding that might be done during symlink
creation. __page_symlink() will honour the mapping gfp flags, so once
creation. page_symlink() will honour the mapping gfp flags, so once
you've done inode_nohighmem() it's safe to use, but if you allocate and
insert the page manually, make sure to use the right gfp flags.

13
fs/namei.c
View file

@ -5001,12 +5001,10 @@ int page_readlink(struct dentry *dentry, char __user *buffer, int buflen)
}
EXPORT_SYMBOL(page_readlink);
/*
* The nofs argument instructs pagecache_write_begin to pass AOP_FLAG_NOFS
*/
int __page_symlink(struct inode *inode, const char *symname, int len, int nofs)
int page_symlink(struct inode *inode, const char *symname, int len)
{
struct address_space *mapping = inode->i_mapping;
bool nofs = !mapping_gfp_constraint(mapping, __GFP_FS);
struct page *page;
void *fsdata;
int err;
@ -5034,13 +5032,6 @@ int __page_symlink(struct inode *inode, const char *symname, int len, int nofs)
fail:
return err;
}
EXPORT_SYMBOL(__page_symlink);
int page_symlink(struct inode *inode, const char *symname, int len)
{
return __page_symlink(inode, symname, len,
!mapping_gfp_constraint(inode->i_mapping, __GFP_FS));
}
EXPORT_SYMBOL(page_symlink);
const struct inode_operations page_symlink_inode_operations = {

2
include/linux/fs.h
View file

@ -3109,8 +3109,6 @@ extern int page_readlink(struct dentry *, char __user *, int);
extern const char *page_get_link(struct dentry *, struct inode *,
struct delayed_call *);
extern void page_put_link(void *);
extern int __page_symlink(struct inode *inode, const char *symname, int len,
int nofs);
extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations;
extern void kfree_link(void *);