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ext4: use anonymous devices for KUnit test superblocks

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The mballoc and extents KUnit tests create superblocks through
sget_fc() with a set callback that never assigns s_dev and a kill_sb
that only calls generic_shutdown_super().

The upcoming global device-to-superblock table registers every
superblock under its s_dev, so each superblock needs a unique device
number. Allocate a proper anonymous device via set_anon_super_fc() and
release it through kill_anon_super().

Link: https://patch.msgid.link/20260616-work-super-bdev_holder_global-v2-5-7df6b864028e@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2026-06-16 16:08:21 +02:00
parent abc410fc6d
commit 5b1e65943b
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 4 additions and 14 deletions
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9
fs/ext4/extents-test.c
View File

@ -126,11 +126,6 @@ struct kunit_ext_test_param {
struct kunit_ext_data_state exp_data_state[3];
};
static void ext_kill_sb(struct super_block *sb)
{
generic_shutdown_super(sb);
}
static int ext_init_fs_context(struct fs_context *fc)
{
return 0;
@ -138,13 +133,13 @@ static int ext_init_fs_context(struct fs_context *fc)
static int ext_set(struct super_block *sb, struct fs_context *fc)
{
return 0;
return set_anon_super_fc(sb, fc);
}
static struct file_system_type ext_fs_type = {
.name = "extents test",
.init_fs_context = ext_init_fs_context,
.kill_sb = ext_kill_sb,
.kill_sb = kill_anon_super,
};
static void extents_kunit_exit(struct kunit *test)

9
fs/ext4/mballoc-test.c
View File

@ -59,11 +59,6 @@ static const struct super_operations mbt_sops = {
.free_inode = mbt_free_inode,
};
static void mbt_kill_sb(struct super_block *sb)
{
generic_shutdown_super(sb);
}
static int mbt_init_fs_context(struct fs_context *fc)
{
return 0;
@ -72,7 +67,7 @@ static int mbt_init_fs_context(struct fs_context *fc)
static struct file_system_type mbt_fs_type = {
.name = "mballoc test",
.init_fs_context = mbt_init_fs_context,
.kill_sb = mbt_kill_sb,
.kill_sb = kill_anon_super,
};
static int mbt_mb_init(struct super_block *sb)
@ -136,7 +131,7 @@ static void mbt_mb_release(struct super_block *sb)
static int mbt_set(struct super_block *sb, struct fs_context *fc)
{
return 0;
return set_anon_super_fc(sb, fc);
}
static struct super_block *mbt_ext4_alloc_super_block(void)