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new helper: free_page_put_link() 

similar to kfree_put_link()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-05-07 11:19:14 -04:00
parent 5f2c4179e1
commit ecc087ff14
5 changed files with 10 additions and 18 deletions
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7
fs/configfs/symlink.c
View File

@ -296,15 +296,10 @@ static const char *configfs_follow_link(struct dentry *dentry, void **cookie)
return ERR_PTR(error); return ERR_PTR(error);
} }
static void configfs_put_link(struct inode *unused, void *cookie)
{
free_page((unsigned long)cookie);
}
const struct inode_operations configfs_symlink_inode_operations = { const struct inode_operations configfs_symlink_inode_operations = {
.follow_link = configfs_follow_link, .follow_link = configfs_follow_link,
.readlink = generic_readlink, .readlink = generic_readlink,
.put_link = configfs_put_link, .put_link = free_page_put_link,
.setattr = configfs_setattr, .setattr = configfs_setattr,
}; };

7
fs/fuse/dir.c
View File

@ -1395,11 +1395,6 @@ static const char *fuse_follow_link(struct dentry *dentry, void **cookie)
return link; return link;
} }
static void fuse_put_link(struct inode *unused, void *cookie)
{
free_page((unsigned long) cookie);
}
static int fuse_dir_open(struct inode *inode, struct file *file) static int fuse_dir_open(struct inode *inode, struct file *file)
{ {
return fuse_open_common(inode, file, true); return fuse_open_common(inode, file, true);
@ -1915,7 +1910,7 @@ static const struct inode_operations fuse_common_inode_operations = {
static const struct inode_operations fuse_symlink_inode_operations = { static const struct inode_operations fuse_symlink_inode_operations = {
.setattr = fuse_setattr, .setattr = fuse_setattr,
.follow_link = fuse_follow_link, .follow_link = fuse_follow_link,
.put_link = fuse_put_link, .put_link = free_page_put_link,
.readlink = generic_readlink, .readlink = generic_readlink,
.getattr = fuse_getattr, .getattr = fuse_getattr,
.setxattr = fuse_setxattr, .setxattr = fuse_setxattr,

7
fs/kernfs/symlink.c
View File

@ -126,11 +126,6 @@ static const char *kernfs_iop_follow_link(struct dentry *dentry, void **cookie)
return *cookie = (char *)page; return *cookie = (char *)page;
} }
static void kernfs_iop_put_link(struct inode *unused, void *cookie)
{
free_page((unsigned long)cookie);
}
const struct inode_operations kernfs_symlink_iops = { const struct inode_operations kernfs_symlink_iops = {
.setxattr = kernfs_iop_setxattr, .setxattr = kernfs_iop_setxattr,
.removexattr = kernfs_iop_removexattr, .removexattr = kernfs_iop_removexattr,
@ -138,7 +133,7 @@ const struct inode_operations kernfs_symlink_iops = {
.listxattr = kernfs_iop_listxattr, .listxattr = kernfs_iop_listxattr,
.readlink = generic_readlink, .readlink = generic_readlink,
.follow_link = kernfs_iop_follow_link, .follow_link = kernfs_iop_follow_link,
.put_link = kernfs_iop_put_link, .put_link = free_page_put_link,
.setattr = kernfs_iop_setattr, .setattr = kernfs_iop_setattr,
.getattr = kernfs_iop_getattr, .getattr = kernfs_iop_getattr,
.permission = kernfs_iop_permission, .permission = kernfs_iop_permission,

6
fs/libfs.c
View File

@ -1030,6 +1030,12 @@ void kfree_put_link(struct inode *unused, void *cookie)
} }
EXPORT_SYMBOL(kfree_put_link); EXPORT_SYMBOL(kfree_put_link);
void free_page_put_link(struct inode *unused, void *cookie)
{
free_page((unsigned long) cookie);
}
EXPORT_SYMBOL(free_page_put_link);
/* /*
* nop .set_page_dirty method so that people can use .page_mkwrite on * nop .set_page_dirty method so that people can use .page_mkwrite on
* anon inodes. * anon inodes.

1
include/linux/fs.h
View File

@ -2712,6 +2712,7 @@ extern int __page_symlink(struct inode *inode, const char *symname, int len,
extern int page_symlink(struct inode *inode, const char *symname, int len); extern int page_symlink(struct inode *inode, const char *symname, int len);
extern const struct inode_operations page_symlink_inode_operations; extern const struct inode_operations page_symlink_inode_operations;
extern void kfree_put_link(struct inode *, void *); extern void kfree_put_link(struct inode *, void *);
extern void free_page_put_link(struct inode *, void *);
extern int generic_readlink(struct dentry *, char __user *, int); extern int generic_readlink(struct dentry *, char __user *, int);
extern void generic_fillattr(struct inode *, struct kstat *); extern void generic_fillattr(struct inode *, struct kstat *);
int vfs_getattr_nosec(struct path *path, struct kstat *stat); int vfs_getattr_nosec(struct path *path, struct kstat *stat);