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ext4: use struct_size() to improve ext4_htree_store_dirent()
Inline and use struct_size() to calculate the number of bytes to allocate for new_fn and remove the local variable len. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://patch.msgid.link/20241105103353.11590-2-thorsten.blum@linux.dev Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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@ -471,14 +471,13 @@ int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
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struct rb_node **p, *parent = NULL;
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struct fname *fname, *new_fn;
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struct dir_private_info *info;
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int len;
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info = dir_file->private_data;
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p = &info->root.rb_node;
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/* Create and allocate the fname structure */
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len = sizeof(struct fname) + ent_name->len + 1;
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new_fn = kzalloc(len, GFP_KERNEL);
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new_fn = kzalloc(struct_size(new_fn, name, ent_name->len + 1),
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GFP_KERNEL);
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if (!new_fn)
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return -ENOMEM;
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new_fn->hash = hash;
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