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Commit aaedb55b authored by Josef Bacik's avatar Josef Bacik Committed by Chris Mason
Browse files

Btrfs: add tests for btrfs_get_extent 



I'm going to be removing hole extents in the near future so I wanted to make a
sanity test for btrfs_get_extent to make sure I don't break anything in the
meantime.  This patch just puts btrfs_get_extent through its paces by giving it
a completely unreasonable mapping to look at and make sure it is giving us back
maps that make sense.  Thanks,

Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
Signed-off-by: default avatarChris Mason <chris.mason@fusionio.com>
parent 294e30fe

fs/btrfs/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -15,4 +15,5 @@ btrfs-$(CONFIG_BTRFS_FS_POSIX_ACL) += acl.o 
btrfs-$(CONFIG_BTRFS_FS_CHECK_INTEGRITY) += check-integrity.o



btrfs-$(CONFIG_BTRFS_FS_RUN_SANITY_TESTS) += tests/free-space-tests.o \

	tests/extent-buffer-tests.o tests/btrfs-tests.o tests/extent-io-tests.o
 
	tests/extent-buffer-tests.o tests/btrfs-tests.o \

	tests/extent-io-tests.o tests/inode-tests.o

fs/btrfs/ctree.h

+4 −0
Original line number Diff line number Diff line
@@ -4034,5 +4034,9 @@ static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) 
	return signal_pending(current);

}



/* Sanity test specific functions */

#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS

void btrfs_test_destroy_inode(struct inode *inode);

#endif



#endif

fs/btrfs/inode.c

+8 −0
Original line number Diff line number Diff line
@@ -7795,6 +7795,14 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) 
	return inode;

}



#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS

void btrfs_test_destroy_inode(struct inode *inode)

{

	btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);

	kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));

}

#endif



static void btrfs_i_callback(struct rcu_head *head)

{

	struct inode *inode = container_of(head, struct inode, i_rcu);

fs/btrfs/super.c

+3 −0
Original line number Diff line number Diff line
@@ -1802,6 +1802,9 @@ static int btrfs_run_sanity_tests(void) 
	if (ret)

		goto out;

	ret = btrfs_test_extent_io();

	if (ret)

		goto out;

	ret = btrfs_test_inodes();

out:

	btrfs_destroy_test_fs();

	return ret;

fs/btrfs/tests/btrfs-tests.c

+7 −1
Original line number Diff line number Diff line
@@ -24,11 +24,17 @@ 


static struct vfsmount *test_mnt = NULL;



static const struct super_operations btrfs_test_super_ops = {

	.alloc_inode	= btrfs_alloc_inode,

	.destroy_inode	= btrfs_test_destroy_inode,

};



static struct dentry *btrfs_test_mount(struct file_system_type *fs_type,

				       int flags, const char *dev_name,

				       void *data)

{

	return mount_pseudo(fs_type, "btrfs_test:", NULL, NULL, BTRFS_TEST_MAGIC);

	return mount_pseudo(fs_type, "btrfs_test:", &btrfs_test_super_ops,

			    NULL, BTRFS_TEST_MAGIC);

}



static struct file_system_type test_type = {