efivarfs: Free s_fs_info on unmount
[ Upstream commit 547713d502f7b4b8efccd409cff84d731a23853b ] Now that we allocate a s_fs_info struct on fs context creation, we should ensure that we free it again when the superblock goes away. Fixes: 5329aa5101f7 ("efivarfs: Add uid/gid mount options") Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -250,10 +250,13 @@ static int efivarfs_init_fs_context(struct fs_context *fc)
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static void efivarfs_kill_sb(struct super_block *sb)
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static void efivarfs_kill_sb(struct super_block *sb)
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{
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{
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struct efivarfs_fs_info *sfi = sb->s_fs_info;
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kill_litter_super(sb);
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kill_litter_super(sb);
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/* Remove all entries and destroy */
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/* Remove all entries and destroy */
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efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL);
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efivar_entry_iter(efivarfs_destroy, &efivarfs_list, NULL);
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kfree(sfi);
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}
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}
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static struct file_system_type efivarfs_type = {
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static struct file_system_type efivarfs_type = {
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