faa2dbf004
This exercises the various parts of the new qgroup accounting code. We do some basic stuff and do some things with the shared refs to make sure all that code works. I had to add a bunch of infrastructure because I needed to be able to insert items into a fake tree without having to do all the hard work myself, hopefully this will be usefull in the future. Thanks, Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
929 lines
26 KiB
C
929 lines
26 KiB
C
/*
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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 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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static void insert_inode_item_key(struct btrfs_root *root)
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{
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struct btrfs_path path;
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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 = 0;
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memset(&path, 0, sizeof(path));
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path.nodes[0] = leaf;
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path.slots[0] = 0;
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key.objectid = BTRFS_INODE_ITEM_KEY;
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key.type = BTRFS_INODE_ITEM_KEY;
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key.offset = 0;
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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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}
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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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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 = btrfs_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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}
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if (em->start != offset || em->len != 4091) {
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test_msg("Unexpected extent wanted start %llu len 1, got start "
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"%llu len %llu\n", offset, 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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/*
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* We don't test anything else for inline since it doesn't get set
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* unless we have a page for it to write into. Maybe we should change
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* this?
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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_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 != offset || em->len != 4) {
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test_msg("Unexpected extent wanted start %llu len 4, got start "
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"%llu len %llu\n", offset, 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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/* Regular extent */
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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_LAST_BYTE) {
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test_msg("Expected a real extent, got %llu\n", em->block_start);
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goto out;
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}
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if (em->start != offset || em->len != 4095) {
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test_msg("Unexpected extent wanted start %llu len 4095, got "
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"start %llu len %llu\n", offset, 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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if (em->orig_start != em->start) {
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test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
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em->orig_start);
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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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|
|
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/* The next 3 are split extents */
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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_LAST_BYTE) {
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test_msg("Expected a real extent, got %llu\n", em->block_start);
|
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goto out;
|
|
}
|
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if (em->start != offset || em->len != 4096) {
|
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test_msg("Unexpected extent wanted start %llu len 4096, got "
|
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"start %llu len %llu\n", offset, em->start, em->len);
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goto out;
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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;
|
|
}
|
|
if (em->orig_start != em->start) {
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test_msg("Wrong orig offset, want %llu, have %llu\n", em->start,
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em->orig_start);
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goto out;
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}
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disk_bytenr = em->block_start;
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orig_start = em->start;
|
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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");
|
|
goto out;
|
|
}
|
|
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;
|
|
}
|
|
if (em->start != offset || em->len != 4096) {
|
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test_msg("Unexpected extent wanted start %llu len 4096, got "
|
|
"start %llu len %llu\n", offset, 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;
|
|
}
|
|
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);
|
|
if (IS_ERR(em)) {
|
|
test_msg("Got an error when we shouldn't have\n");
|
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goto out;
|
|
}
|
|
if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
|
|
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
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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);
|
|
btrfs_free_dummy_root(root);
|
|
return ret;
|
|
}
|
|
|
|
static int test_hole_first(void)
|
|
{
|
|
struct inode *inode = NULL;
|
|
struct btrfs_root *root = NULL;
|
|
struct extent_map *em = NULL;
|
|
int ret = -ENOMEM;
|
|
|
|
inode = btrfs_new_test_inode();
|
|
if (!inode) {
|
|
test_msg("Couldn't allocate inode\n");
|
|
return ret;
|
|
}
|
|
|
|
BTRFS_I(inode)->location.type = BTRFS_INODE_ITEM_KEY;
|
|
BTRFS_I(inode)->location.objectid = BTRFS_FIRST_FREE_OBJECTID;
|
|
BTRFS_I(inode)->location.offset = 0;
|
|
|
|
root = btrfs_alloc_dummy_root();
|
|
if (IS_ERR(root)) {
|
|
test_msg("Couldn't allocate root\n");
|
|
goto out;
|
|
}
|
|
|
|
root->fs_info = btrfs_alloc_dummy_fs_info();
|
|
if (!root->fs_info) {
|
|
test_msg("Couldn't allocate dummy fs info\n");
|
|
goto out;
|
|
}
|
|
|
|
root->node = alloc_dummy_extent_buffer(0, 4096);
|
|
if (!root->node) {
|
|
test_msg("Couldn't allocate dummy buffer\n");
|
|
goto out;
|
|
}
|
|
|
|
extent_buffer_get(root->node);
|
|
btrfs_set_header_nritems(root->node, 0);
|
|
btrfs_set_header_level(root->node, 0);
|
|
BTRFS_I(inode)->root = root;
|
|
ret = -EINVAL;
|
|
|
|
/*
|
|
* Need a blank inode item here just so we don't confuse
|
|
* btrfs_get_extent.
|
|
*/
|
|
insert_inode_item_key(root);
|
|
insert_extent(root, 4096, 4096, 4096, 0, 4096, 4096,
|
|
BTRFS_FILE_EXTENT_REG, 0, 1);
|
|
em = btrfs_get_extent(inode, NULL, 0, 0, 8192, 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 != 0 || em->len != 4096) {
|
|
test_msg("Unexpected extent wanted start 0 len 4096, got start "
|
|
"%llu len %llu\n", em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != vacancy_only) {
|
|
test_msg("Wrong flags, wanted %lu, have %lu\n", vacancy_only,
|
|
em->flags);
|
|
goto out;
|
|
}
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(inode, NULL, 0, 4096, 8192, 0);
|
|
if (IS_ERR(em)) {
|
|
test_msg("Got an error when we shouldn't have\n");
|
|
goto out;
|
|
}
|
|
if (em->block_start != 4096) {
|
|
test_msg("Expected a real extent, got %llu\n", em->block_start);
|
|
goto out;
|
|
}
|
|
if (em->start != 4096 || em->len != 4096) {
|
|
test_msg("Unexpected extent wanted start 4096 len 4096, got "
|
|
"start %llu len %llu\n", em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_msg("Unexpected flags set, wanted 0 got %lu\n",
|
|
em->flags);
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
out:
|
|
if (!IS_ERR(em))
|
|
free_extent_map(em);
|
|
iput(inode);
|
|
btrfs_free_dummy_root(root);
|
|
return ret;
|
|
}
|
|
|
|
int btrfs_test_inodes(void)
|
|
{
|
|
int ret;
|
|
|
|
set_bit(EXTENT_FLAG_COMPRESSED, &compressed_only);
|
|
set_bit(EXTENT_FLAG_VACANCY, &vacancy_only);
|
|
set_bit(EXTENT_FLAG_PREALLOC, &prealloc_only);
|
|
|
|
test_msg("Running btrfs_get_extent tests\n");
|
|
ret = test_btrfs_get_extent();
|
|
if (ret)
|
|
return ret;
|
|
test_msg("Running hole first btrfs_get_extent test\n");
|
|
return test_hole_first();
|
|
}
|