mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux
synced 2025-10-29 18:20:30 +10:00
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: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Josef Bacik
Chris Mason
parent
294e30fee3
commit
aaedb55bc0
@ -15,4 +15,5 @@ btrfs-$(CONFIG_BTRFS_FS_POSIX_ACL) += acl.o
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btrfs-$(CONFIG_BTRFS_FS_CHECK_INTEGRITY) += check-integrity.o
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btrfs-$(CONFIG_BTRFS_FS_RUN_SANITY_TESTS) += tests/free-space-tests.o \
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tests/extent-buffer-tests.o tests/btrfs-tests.o tests/extent-io-tests.o
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tests/extent-buffer-tests.o tests/btrfs-tests.o \
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tests/extent-io-tests.o tests/inode-tests.o
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@ -4034,5 +4034,9 @@ static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info)
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return signal_pending(current);
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}
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/* Sanity test specific functions */
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#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
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void btrfs_test_destroy_inode(struct inode *inode);
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#endif
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#endif
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@ -7795,6 +7795,14 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
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return inode;
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}
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#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
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void btrfs_test_destroy_inode(struct inode *inode)
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{
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btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
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kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
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}
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#endif
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static void btrfs_i_callback(struct rcu_head *head)
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{
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struct inode *inode = container_of(head, struct inode, i_rcu);
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@ -1802,6 +1802,9 @@ static int btrfs_run_sanity_tests(void)
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if (ret)
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goto out;
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ret = btrfs_test_extent_io();
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if (ret)
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goto out;
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ret = btrfs_test_inodes();
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out:
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btrfs_destroy_test_fs();
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return ret;
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@ -24,11 +24,17 @@
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static struct vfsmount *test_mnt = NULL;
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static const struct super_operations btrfs_test_super_ops = {
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.alloc_inode = btrfs_alloc_inode,
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.destroy_inode = btrfs_test_destroy_inode,
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};
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static struct dentry *btrfs_test_mount(struct file_system_type *fs_type,
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int flags, const char *dev_name,
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void *data)
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{
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return mount_pseudo(fs_type, "btrfs_test:", NULL, NULL, BTRFS_TEST_MAGIC);
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return mount_pseudo(fs_type, "btrfs_test:", &btrfs_test_super_ops,
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NULL, BTRFS_TEST_MAGIC);
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}
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static struct file_system_type test_type = {
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@ -26,6 +26,7 @@
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int btrfs_test_free_space_cache(void);
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int btrfs_test_extent_buffer_operations(void);
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int btrfs_test_extent_io(void);
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int btrfs_test_inodes(void);
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int btrfs_init_test_fs(void);
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void btrfs_destroy_test_fs(void);
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struct inode *btrfs_new_test_inode(void);
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@ -49,6 +50,10 @@ static inline int btrfs_test_extent_io(void)
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{
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return 0;
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}
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static inline int btrfs_test_inodes(void)
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{
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return 0;
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}
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#endif
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#endif
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832
fs/btrfs/tests/inode-tests.c
Normal file
832
fs/btrfs/tests/inode-tests.c
Normal file
@ -0,0 +1,832 @@
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/*
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* Copyright (C) 2013 Fusion IO. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "btrfs-tests.h"
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#include "../ctree.h"
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#include "../btrfs_inode.h"
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#include "../disk-io.h"
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#include "../extent_io.h"
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#include "../volumes.h"
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static struct btrfs_fs_info *alloc_dummy_fs_info(void)
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{
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struct btrfs_fs_info *fs_info = kzalloc(sizeof(struct btrfs_fs_info),
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GFP_NOFS);
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if (!fs_info)
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return fs_info;
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fs_info->fs_devices = kzalloc(sizeof(struct btrfs_fs_devices),
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GFP_NOFS);
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if (!fs_info->fs_devices) {
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kfree(fs_info);
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return NULL;
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}
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return fs_info;
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}
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static void free_dummy_root(struct btrfs_root *root)
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{
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if (!root)
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return;
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if (root->fs_info) {
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kfree(root->fs_info->fs_devices);
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kfree(root->fs_info);
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}
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if (root->node)
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free_extent_buffer(root->node);
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kfree(root);
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}
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static void insert_extent(struct btrfs_root *root, u64 start, u64 len,
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u64 ram_bytes, u64 offset, u64 disk_bytenr,
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u64 disk_len, u32 type, u8 compression, int slot)
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{
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struct btrfs_path path;
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struct btrfs_file_extent_item *fi;
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struct extent_buffer *leaf = root->node;
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struct btrfs_key key;
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u32 value_len = sizeof(struct btrfs_file_extent_item);
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if (type == BTRFS_FILE_EXTENT_INLINE)
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value_len += len;
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memset(&path, 0, sizeof(path));
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path.nodes[0] = leaf;
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path.slots[0] = slot;
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key.objectid = BTRFS_FIRST_FREE_OBJECTID;
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key.type = BTRFS_EXTENT_DATA_KEY;
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key.offset = start;
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setup_items_for_insert(root, &path, &key, &value_len, value_len,
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value_len + sizeof(struct btrfs_item), 1);
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fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
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btrfs_set_file_extent_generation(leaf, fi, 1);
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btrfs_set_file_extent_type(leaf, fi, type);
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btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
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btrfs_set_file_extent_disk_num_bytes(leaf, fi, disk_len);
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btrfs_set_file_extent_offset(leaf, fi, offset);
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btrfs_set_file_extent_num_bytes(leaf, fi, len);
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btrfs_set_file_extent_ram_bytes(leaf, fi, ram_bytes);
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btrfs_set_file_extent_compression(leaf, fi, compression);
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btrfs_set_file_extent_encryption(leaf, fi, 0);
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btrfs_set_file_extent_other_encoding(leaf, fi, 0);
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}
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/*
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* Build the most complicated map of extents the earth has ever seen. We want
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* this so we can test all of the corner cases of btrfs_get_extent. Here is a
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* diagram of how the extents will look though this may not be possible we still
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* want to make sure everything acts normally (the last number is not inclusive)
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*
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* [0 - 5][5 - 6][6 - 10][10 - 4096][ 4096 - 8192 ][8192 - 12288]
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* [hole ][inline][ hole ][ regular ][regular1 split][ hole ]
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*
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* [ 12288 - 20480][20480 - 24576][ 24576 - 28672 ][28672 - 36864][36864 - 45056]
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* [regular1 split][ prealloc1 ][prealloc1 written][ prealloc1 ][ compressed ]
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*
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* [45056 - 49152][49152-53248][53248-61440][61440-65536][ 65536+81920 ]
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* [ compressed1 ][ regular ][compressed1][ regular ][ hole but no extent]
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*
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* [81920-86016]
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* [ regular ]
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*/
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static void setup_file_extents(struct btrfs_root *root)
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{
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int slot = 0;
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u64 disk_bytenr = 1 * 1024 * 1024;
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u64 offset = 0;
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/* First we want a hole */
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insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
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slot);
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slot++;
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offset += 5;
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/*
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* Now we want an inline extent, I don't think this is possible but hey
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* why not? Also keep in mind if we have an inline extent it counts as
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* the whole first page. If we were to expand it we would have to cow
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* and we wouldn't have an inline extent anymore.
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*/
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insert_extent(root, offset, 1, 1, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
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slot);
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slot++;
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offset = 4096;
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/* Now another hole */
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insert_extent(root, offset, 4, 4, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0,
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slot);
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slot++;
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offset += 4;
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/* Now for a regular extent */
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insert_extent(root, offset, 4095, 4095, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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disk_bytenr += 4096;
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offset += 4095;
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/*
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* Now for 3 extents that were split from a hole punch so we test
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* offsets properly.
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*/
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insert_extent(root, offset, 4096, 16384, 0, disk_bytenr, 16384,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 4096, 4096, 0, 0, 0, BTRFS_FILE_EXTENT_REG,
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0, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 8192, 16384, 8192, disk_bytenr, 16384,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 8192;
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disk_bytenr += 16384;
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/* Now for a unwritten prealloc extent */
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insert_extent(root, offset, 4096, 4096, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += 4096;
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/*
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* We want to jack up disk_bytenr a little more so the em stuff doesn't
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* merge our records.
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*/
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disk_bytenr += 8192;
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/*
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* Now for a partially written prealloc extent, basically the same as
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* the hole punch example above. Ram_bytes never changes when you mark
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* extents written btw.
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*/
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insert_extent(root, offset, 4096, 16384, 0, disk_bytenr, 16384,
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BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 4096, 16384, 4096, disk_bytenr, 16384,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 8192, 16384, 8192, disk_bytenr, 16384,
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BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += 8192;
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disk_bytenr += 16384;
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/* Now a normal compressed extent */
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insert_extent(root, offset, 8192, 8192, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += 8192;
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/* No merges */
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disk_bytenr += 8192;
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/* Now a split compressed extent */
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insert_extent(root, offset, 4096, 16384, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 4096, 4096, 0, disk_bytenr + 4096, 4096,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 4096;
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insert_extent(root, offset, 8192, 16384, 8192, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += 8192;
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disk_bytenr += 8192;
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/* Now extents that have a hole but no hole extent */
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insert_extent(root, offset, 4096, 4096, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 16384;
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disk_bytenr += 4096;
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insert_extent(root, offset, 4096, 4096, 0, disk_bytenr, 4096,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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}
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static unsigned long prealloc_only = 0;
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static unsigned long compressed_only = 0;
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static unsigned long vacancy_only = 0;
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static noinline int test_btrfs_get_extent(void)
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{
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struct inode *inode = NULL;
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struct btrfs_root *root = NULL;
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struct extent_map *em = NULL;
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u64 orig_start;
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u64 disk_bytenr;
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u64 offset;
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int ret = -ENOMEM;
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set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
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set_bit(EXTENT_FLAG_VACANCY, &vacancy_only);
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set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
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inode = btrfs_new_test_inode();
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if (!inode) {
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test_msg("Couldn't allocate inode\n");
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return ret;
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}
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BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
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BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
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BTRFS_I(inode)->location.offset = 0;
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root = btrfs_alloc_dummy_root();
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if (IS_ERR(root)) {
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test_msg("Couldn't allocate root\n");
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goto out;
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}
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/*
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* We do this since btrfs_get_extent wants to assign em->bdev to
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* root->fs_info->fs_devices->latest_bdev.
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*/
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root->fs_info = alloc_dummy_fs_info();
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if (!root->fs_info) {
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test_msg("Couldn't allocate dummy fs info\n");
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goto out;
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}
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root->node = alloc_dummy_extent_buffer(0, 4096);
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if (!root->node) {
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test_msg("Couldn't allocate dummy buffer\n");
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goto out;
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}
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/*
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* We will just free a dummy node if it's ref count is 2 so we need an
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* extra ref so our searches don't accidently release our page.
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*/
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extent_buffer_get(root->node);
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btrfs_set_header_nritems(root->node, 0);
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btrfs_set_header_level(root->node, 0);
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ret = -EINVAL;
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/* First with no extents */
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BTRFS_I(inode)->root = root;
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em = btrfs_get_extent(inode, NULL, 0, 0, 4096, 0);
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if (IS_ERR(em)) {
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em = NULL;
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test_msg("Got an error when we shouldn't have\n");
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goto out;
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}
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if (em->block_start != EXTENT_MAP_HOLE) {
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test_msg("Expected a hole, got %llu\n", em->block_start);
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goto out;
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}
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if (!test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
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test_msg("Vacancy flag wasn't set properly\n");
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goto out;
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}
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free_extent_map(em);
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btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
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/*
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* All of the magic numbers are based on the mapping setup in
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* setup_file_extents, so if you change anything there you need to
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* update the comment and update the expected values below.
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*/
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setup_file_extents(root);
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em = btrfs_get_extent(inode, NULL, 0, 0, (u64)-1, 0);
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if (IS_ERR(em)) {
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test_msg("Got an error when we shouldn't have\n");
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goto out;
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}
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if (em->block_start != EXTENT_MAP_HOLE) {
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test_msg("Expected a hole, got %llu\n", em->block_start);
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goto out;
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}
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if (em->start != 0 || em->len != 5) {
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test_msg("Unexpected extent wanted start 0 len 5, got start "
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"%llu len %llu\n", em->start, em->len);
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goto out;
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}
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if (em->flags != 0) {
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test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
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goto out;
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}
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offset = em->start + em->len;
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free_extent_map(em);
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em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
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if (IS_ERR(em)) {
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test_msg("Got an error when we shouldn't have\n");
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goto out;
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}
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if (em->block_start != EXTENT_MAP_INLINE) {
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test_msg("Expected an inline, got %llu\n", em->block_start);
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goto out;
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}
|
||||
if (em->start != offset || em->len != 4091) {
|
||||
test_msg("Unexpected extent wanted start %llu len 1, got start "
|
||||
"%llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
/*
|
||||
* We don't test anything else for inline since it doesn't get set
|
||||
* unless we have a page for it to write into. Maybe we should change
|
||||
* this?
|
||||
*/
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != EXTENT_MAP_HOLE) {
|
||||
test_msg("Expected a hole, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4, got start "
|
||||
"%llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* Regular extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4095) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4095, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* The next 3 are split extents */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
disk_bytenr = em->block_start;
|
||||
orig_start = em->start;
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != EXTENT_MAP_HOLE) {
|
||||
test_msg("Expected a hole, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 8192) {
|
||||
test_msg("Unexpected extent wanted start %llu len 8192, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != orig_start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n",
|
||||
orig_start, em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
disk_bytenr += (em->start - orig_start);
|
||||
if (em->block_start != disk_bytenr) {
|
||||
test_msg("Wrong block start, want %llu, have %llu\n",
|
||||
disk_bytenr, em->block_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* Prealloc extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != prealloc_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
prealloc_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* The next 3 are a half written prealloc extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != prealloc_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
prealloc_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
disk_bytenr = em->block_start;
|
||||
orig_start = em->start;
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_HOLE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != orig_start) {
|
||||
test_msg("Unexpected orig offset, wanted %llu, have %llu\n",
|
||||
orig_start, em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
|
||||
test_msg("Unexpected block start, wanted %llu, have %llu\n",
|
||||
disk_bytenr + (em->start - em->orig_start),
|
||||
em->block_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 8192) {
|
||||
test_msg("Unexpected extent wanted start %llu len 8192, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != prealloc_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
prealloc_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != orig_start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", orig_start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != (disk_bytenr + (em->start - em->orig_start))) {
|
||||
test_msg("Unexpected block start, wanted %llu, have %llu\n",
|
||||
disk_bytenr + (em->start - em->orig_start),
|
||||
em->block_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* Now for the compressed extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 8192) {
|
||||
test_msg("Unexpected extent wanted start %llu len 8192, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != compressed_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
compressed_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n",
|
||||
em->start, em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
|
||||
test_msg("Unexpected compress type, wanted %d, got %d\n",
|
||||
BTRFS_COMPRESS_ZLIB, em->compress_type);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* Split compressed extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != compressed_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
compressed_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n",
|
||||
em->start, em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
|
||||
test_msg("Unexpected compress type, wanted %d, got %d\n",
|
||||
BTRFS_COMPRESS_ZLIB, em->compress_type);
|
||||
goto out;
|
||||
}
|
||||
disk_bytenr = em->block_start;
|
||||
orig_start = em->start;
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != disk_bytenr) {
|
||||
test_msg("Block start does not match, want %llu got %llu\n",
|
||||
disk_bytenr, em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 8192) {
|
||||
test_msg("Unexpected extent wanted start %llu len 8192, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != compressed_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
compressed_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != orig_start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n",
|
||||
em->start, orig_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->compress_type != BTRFS_COMPRESS_ZLIB) {
|
||||
test_msg("Unexpected compress type, wanted %d, got %d\n",
|
||||
BTRFS_COMPRESS_ZLIB, em->compress_type);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
/* A hole between regular extents but no hole extent */
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset + 6, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096 * 1024, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start != EXTENT_MAP_HOLE) {
|
||||
test_msg("Expected a hole extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
/*
|
||||
* Currently we just return a length that we requested rather than the
|
||||
* length of the actual hole, if this changes we'll have to change this
|
||||
* test.
|
||||
*/
|
||||
if (em->start != offset || em->len != 12288) {
|
||||
test_msg("Unexpected extent wanted start %llu len 12288, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != vacancy_only) {
|
||||
test_msg("Unexpected flags set, want %lu have %lu\n",
|
||||
vacancy_only, em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
offset = em->start + em->len;
|
||||
free_extent_map(em);
|
||||
|
||||
em = btrfs_get_extent(inode, NULL, 0, offset, 4096, 0);
|
||||
if (IS_ERR(em)) {
|
||||
test_msg("Got an error when we shouldn't have\n");
|
||||
goto out;
|
||||
}
|
||||
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
||||
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
||||
goto out;
|
||||
}
|
||||
if (em->start != offset || em->len != 4096) {
|
||||
test_msg("Unexpected extent wanted start %llu len 4096, got "
|
||||
"start %llu len %llu\n", offset, em->start, em->len);
|
||||
goto out;
|
||||
}
|
||||
if (em->flags != 0) {
|
||||
test_msg("Unexpected flags set, want 0 have %lu\n", em->flags);
|
||||
goto out;
|
||||
}
|
||||
if (em->orig_start != em->start) {
|
||||
test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
|
||||
em->orig_start);
|
||||
goto out;
|
||||
}
|
||||
ret = 0;
|
||||
out:
|
||||
if (!IS_ERR(em))
|
||||
free_extent_map(em);
|
||||
iput(inode);
|
||||
free_dummy_root(root);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int btrfs_test_inodes(void)
|
||||
{
|
||||
test_msg("Running btrfs_get_extent tests\n");
|
||||
return test_btrfs_get_extent();
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user