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switch ->get_link() to delayed_call, kill ->put_link()

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-12-29 15:58:39 -05:00
parent cd3417c8fc
commit fceef393a5
43 changed files with 206 additions and 218 deletions
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19
fs/kernfs/symlink.c
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@@ -113,22 +113,24 @@ static int kernfs_getlink(struct dentry *dentry, char *path)
}
static const char *kernfs_iop_get_link(struct dentry *dentry,
struct inode *inode, void **cookie)
struct inode *inode,
struct delayed_call *done)
{
int error = -ENOMEM;
char *page;
char *body;
int error;
if (!dentry)
return ERR_PTR(-ECHILD);
page = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (!page)
body = kzalloc(PAGE_SIZE, GFP_KERNEL);
if (!body)
return ERR_PTR(-ENOMEM);
error = kernfs_getlink(dentry, page);
error = kernfs_getlink(dentry, body);
if (unlikely(error < 0)) {
kfree(page);
kfree(body);
return ERR_PTR(error);
}
return *cookie = page;
set_delayed_call(done, kfree_link, body);
return body;
}
const struct inode_operations kernfs_symlink_iops = {
@@ -138,7 +140,6 @@ const struct inode_operations kernfs_symlink_iops = {
.listxattr = kernfs_iop_listxattr,
.readlink = generic_readlink,
.get_link = kernfs_iop_get_link,
.put_link = kfree_put_link,
.setattr = kernfs_iop_setattr,
.getattr = kernfs_iop_getattr,
.permission = kernfs_iop_permission,