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c77a8c6100
The member extent_map::block_start can be calculated from extent_map::disk_bytenr + extent_map::offset for regular extents. And otherwise just extent_map::disk_bytenr. And this is already validated by the validate_extent_map(). Now we can remove the member. However there is a special case in btrfs_create_dio_extent() where we for NOCOW/PREALLOC ordered extents cannot directly use the resulting btrfs_file_extent, as btrfs_split_ordered_extent() cannot handle them yet. So for that call site, we pass file_extent->disk_bytenr + file_extent->num_bytes as disk_bytenr for the ordered extent, and 0 for offset. Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
1096 lines
31 KiB
C
1096 lines
31 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2013 Fusion IO. All rights reserved.
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*/
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#include <linux/types.h>
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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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#include "../compression.h"
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#include "../accessors.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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/*
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* Passing a NULL trans handle is fine here, we have a dummy root eb
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* and the tree is a single node (level 0).
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*/
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btrfs_setup_item_for_insert(NULL, root, &path, &key, value_len);
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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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/*
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* Passing a NULL trans handle is fine here, we have a dummy root eb
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* and the tree is a single node (level 0).
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*/
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btrfs_setup_item_for_insert(NULL, root, &path, &key, value_len);
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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 - 6][ 6 - 4096 ][ 4096 - 4100][4100 - 8195][8195 - 12291]
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* [inline][hole but no extent][ hole ][ regular ][regular1 split]
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*
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* [12291 - 16387][16387 - 24579][24579 - 28675][ 28675 - 32771][32771 - 36867 ]
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* [ hole ][regular1 split][ prealloc ][ prealloc1 ][prealloc1 written]
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*
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* [36867 - 45059][45059 - 53251][53251 - 57347][57347 - 61443][61443- 69635]
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* [ prealloc1 ][ compressed ][ compressed1 ][ regular ][ compressed1]
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*
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* [69635-73731][ 73731 - 86019 ][86019-90115]
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* [ regular ][ hole but no extent][ regular ]
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*/
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static void setup_file_extents(struct btrfs_root *root, u32 sectorsize)
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{
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int slot = 0;
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u64 disk_bytenr = SZ_1M;
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u64 offset = 0;
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/*
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* Tree-checker has strict limits on inline extents that they can only
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* exist at file offset 0, thus we can only have one inline file extent
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* at most.
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*/
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insert_extent(root, offset, 6, 6, 0, 0, 0, BTRFS_FILE_EXTENT_INLINE, 0,
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slot);
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slot++;
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offset = sectorsize;
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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, sectorsize - 1, sectorsize - 1, 0,
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disk_bytenr, sectorsize - 1, BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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disk_bytenr += sectorsize;
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offset += sectorsize - 1;
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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, sectorsize, 4 * sectorsize, 0, disk_bytenr,
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4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, sectorsize, sectorsize, 0, 0, 0,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
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2 * sectorsize, disk_bytenr, 4 * sectorsize,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 2 * sectorsize;
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disk_bytenr += 4 * sectorsize;
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/* Now for a unwritten prealloc extent */
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insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
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sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += sectorsize;
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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 += 2 * sectorsize;
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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, sectorsize, 4 * sectorsize, 0, disk_bytenr,
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4 * sectorsize, BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, sectorsize, 4 * sectorsize, sectorsize,
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disk_bytenr, 4 * sectorsize, BTRFS_FILE_EXTENT_REG, 0,
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slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
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2 * sectorsize, disk_bytenr, 4 * sectorsize,
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BTRFS_FILE_EXTENT_PREALLOC, 0, slot);
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slot++;
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offset += 2 * sectorsize;
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disk_bytenr += 4 * sectorsize;
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/* Now a normal compressed extent */
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insert_extent(root, offset, 2 * sectorsize, 2 * sectorsize, 0,
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disk_bytenr, sectorsize, BTRFS_FILE_EXTENT_REG,
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BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += 2 * sectorsize;
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/* No merges */
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disk_bytenr += 2 * sectorsize;
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/* Now a split compressed extent */
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insert_extent(root, offset, sectorsize, 4 * sectorsize, 0, disk_bytenr,
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sectorsize, BTRFS_FILE_EXTENT_REG,
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BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, sectorsize, sectorsize, 0,
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disk_bytenr + sectorsize, sectorsize,
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BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += sectorsize;
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insert_extent(root, offset, 2 * sectorsize, 4 * sectorsize,
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2 * sectorsize, disk_bytenr, sectorsize,
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BTRFS_FILE_EXTENT_REG, BTRFS_COMPRESS_ZLIB, slot);
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slot++;
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offset += 2 * sectorsize;
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disk_bytenr += 2 * sectorsize;
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/* Now extents that have a hole but no hole extent */
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insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
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sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
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slot++;
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offset += 4 * sectorsize;
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disk_bytenr += sectorsize;
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insert_extent(root, offset, sectorsize, sectorsize, 0, disk_bytenr,
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sectorsize, BTRFS_FILE_EXTENT_REG, 0, slot);
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}
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static u32 prealloc_only = 0;
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static u32 compressed_only = 0;
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static u32 vacancy_only = 0;
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static noinline int test_btrfs_get_extent(u32 sectorsize, u32 nodesize)
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{
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struct btrfs_fs_info *fs_info = NULL;
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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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test_msg("running btrfs_get_extent tests");
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inode = btrfs_new_test_inode();
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if (!inode) {
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test_std_err(TEST_ALLOC_INODE);
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return ret;
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}
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fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
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if (!fs_info) {
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test_std_err(TEST_ALLOC_FS_INFO);
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goto out;
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}
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root = btrfs_alloc_dummy_root(fs_info);
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if (IS_ERR(root)) {
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test_std_err(TEST_ALLOC_ROOT);
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goto out;
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}
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root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
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if (!root->node) {
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test_std_err(TEST_ALLOC_ROOT);
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goto out;
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}
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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(BTRFS_I(inode), NULL, 0, sectorsize);
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if (IS_ERR(em)) {
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em = NULL;
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr != EXTENT_MAP_HOLE) {
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test_err("expected a hole, got %llu", em->disk_bytenr);
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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_map_range(BTRFS_I(inode), 0, (u64)-1, false);
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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, sectorsize);
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em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, (u64)-1);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr != EXTENT_MAP_INLINE) {
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test_err("expected an inline, got %llu", em->disk_bytenr);
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goto out;
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}
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/*
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* For inline extent, we always round up the em to sectorsize, as
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* they are either:
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*
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* a) a hidden hole
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* The range will be zeroed at inline extent read time.
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*
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* b) a file extent with unaligned bytenr
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* Tree checker will reject it.
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*/
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if (em->start != 0 || em->len != sectorsize) {
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test_err(
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"unexpected extent wanted start 0 len %u, got start %llu len %llu",
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sectorsize, 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_err("unexpected flags set, want 0 have %u", 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(BTRFS_I(inode), NULL, offset, sectorsize);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr != EXTENT_MAP_HOLE) {
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test_err("expected a hole, got %llu", em->disk_bytenr);
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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_err(
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"unexpected extent wanted start %llu len 4, got start %llu len %llu",
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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_err("unexpected flags set, want 0 have %u", 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(BTRFS_I(inode), NULL, offset, sectorsize);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
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test_err("expected a real extent, got %llu", em->disk_bytenr);
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goto out;
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}
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if (em->start != offset || em->len != sectorsize - 1) {
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test_err(
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"unexpected extent wanted start %llu len 4095, got start %llu len %llu",
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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_err("unexpected flags set, want 0 have %u", em->flags);
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goto out;
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}
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if (em->offset != 0) {
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test_err("wrong offset, want 0, have %llu", em->offset);
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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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/* The next 3 are split extents */
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em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
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test_err("expected a real extent, got %llu", em->disk_bytenr);
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goto out;
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}
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if (em->start != offset || em->len != sectorsize) {
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test_err(
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"unexpected extent start %llu len %u, got start %llu len %llu",
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offset, sectorsize, 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_err("unexpected flags set, want 0 have %u", em->flags);
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goto out;
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}
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if (em->offset != 0) {
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test_err("wrong offset, want 0, have %llu", em->offset);
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goto out;
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}
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disk_bytenr = extent_map_block_start(em);
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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(BTRFS_I(inode), NULL, offset, sectorsize);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr != EXTENT_MAP_HOLE) {
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test_err("expected a hole, got %llu", em->disk_bytenr);
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goto out;
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}
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if (em->start != offset || em->len != sectorsize) {
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test_err(
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"unexpected extent wanted start %llu len %u, got start %llu len %llu",
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offset, sectorsize, 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_err("unexpected flags set, want 0 have %u", 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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|
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em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
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if (IS_ERR(em)) {
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test_err("got an error when we shouldn't have");
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goto out;
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}
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if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
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test_err("expected a real extent, got %llu", em->disk_bytenr);
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goto out;
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}
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if (em->start != offset || em->len != 2 * sectorsize) {
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test_err(
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"unexpected extent wanted start %llu len %u, got start %llu len %llu",
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offset, 2 * sectorsize, 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_err("unexpected flags set, want 0 have %u", em->flags);
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goto out;
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}
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if (em->start - em->offset != orig_start) {
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test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
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em->start, em->offset, orig_start);
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goto out;
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}
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disk_bytenr += (em->start - orig_start);
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if (extent_map_block_start(em) != disk_bytenr) {
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test_err("wrong block start, want %llu, have %llu",
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disk_bytenr, extent_map_block_start(em));
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goto out;
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|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
/* Prealloc extent */
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != prealloc_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
prealloc_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
/* The next 3 are a half written prealloc extent */
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != prealloc_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
prealloc_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
disk_bytenr = extent_map_block_start(em);
|
|
orig_start = em->start;
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_HOLE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_err("unexpected flags set, want 0 have %u", em->flags);
|
|
goto out;
|
|
}
|
|
if (em->start - em->offset != orig_start) {
|
|
test_err("unexpected offset, wanted %llu, have %llu",
|
|
em->start - orig_start, em->offset);
|
|
goto out;
|
|
}
|
|
if (extent_map_block_start(em) != disk_bytenr + em->offset) {
|
|
test_err("unexpected block start, wanted %llu, have %llu",
|
|
disk_bytenr + em->offset, extent_map_block_start(em));
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != 2 * sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, 2 * sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != prealloc_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
prealloc_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->start - em->offset != orig_start) {
|
|
test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
|
|
em->start, em->offset, orig_start);
|
|
goto out;
|
|
}
|
|
if (extent_map_block_start(em) != disk_bytenr + em->offset) {
|
|
test_err("unexpected block start, wanted %llu, have %llu",
|
|
disk_bytenr + em->offset, extent_map_block_start(em));
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
/* Now for the compressed extent */
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != 2 * sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, 2 * sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != compressed_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
compressed_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
|
|
test_err("unexpected compress type, wanted %d, got %d",
|
|
BTRFS_COMPRESS_ZLIB, extent_map_compression(em));
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
/* Split compressed extent */
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != compressed_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
compressed_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
|
|
test_err("unexpected compress type, wanted %d, got %d",
|
|
BTRFS_COMPRESS_ZLIB, extent_map_compression(em));
|
|
goto out;
|
|
}
|
|
disk_bytenr = extent_map_block_start(em);
|
|
orig_start = em->start;
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_err("unexpected flags set, want 0 have %u", em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (extent_map_block_start(em) != disk_bytenr) {
|
|
test_err("block start does not match, want %llu got %llu",
|
|
disk_bytenr, extent_map_block_start(em));
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != 2 * sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, 2 * sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != compressed_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
compressed_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->start - em->offset != orig_start) {
|
|
test_err("wrong offset, em->start=%llu em->offset=%llu orig_start=%llu",
|
|
em->start, em->offset, orig_start);
|
|
goto out;
|
|
}
|
|
if (extent_map_compression(em) != BTRFS_COMPRESS_ZLIB) {
|
|
test_err("unexpected compress type, wanted %d, got %d",
|
|
BTRFS_COMPRESS_ZLIB, extent_map_compression(em));
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
/* A hole between regular extents but no hole extent */
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset + 6, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_err("unexpected flags set, want 0 have %u", em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, SZ_4M);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr != EXTENT_MAP_HOLE) {
|
|
test_err("expected a hole extent, got %llu", em->disk_bytenr);
|
|
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 != 3 * sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, 3 * sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != vacancy_only) {
|
|
test_err("unexpected flags set, want %u have %u",
|
|
vacancy_only, em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
offset = em->start + em->len;
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, offset, sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr >= EXTENT_MAP_LAST_BYTE) {
|
|
test_err("expected a real extent, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != offset || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %llu len %u, got start %llu len %llu",
|
|
offset, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_err("unexpected flags set, want 0 have %u", em->flags);
|
|
goto out;
|
|
}
|
|
if (em->offset != 0) {
|
|
test_err("wrong orig offset, want 0, have %llu", em->offset);
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
out:
|
|
if (!IS_ERR(em))
|
|
free_extent_map(em);
|
|
iput(inode);
|
|
btrfs_free_dummy_root(root);
|
|
btrfs_free_dummy_fs_info(fs_info);
|
|
return ret;
|
|
}
|
|
|
|
static int test_hole_first(u32 sectorsize, u32 nodesize)
|
|
{
|
|
struct btrfs_fs_info *fs_info = NULL;
|
|
struct inode *inode = NULL;
|
|
struct btrfs_root *root = NULL;
|
|
struct extent_map *em = NULL;
|
|
int ret = -ENOMEM;
|
|
|
|
test_msg("running hole first btrfs_get_extent test");
|
|
|
|
inode = btrfs_new_test_inode();
|
|
if (!inode) {
|
|
test_std_err(TEST_ALLOC_INODE);
|
|
return ret;
|
|
}
|
|
|
|
fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
|
|
if (!fs_info) {
|
|
test_std_err(TEST_ALLOC_FS_INFO);
|
|
goto out;
|
|
}
|
|
|
|
root = btrfs_alloc_dummy_root(fs_info);
|
|
if (IS_ERR(root)) {
|
|
test_std_err(TEST_ALLOC_ROOT);
|
|
goto out;
|
|
}
|
|
|
|
root->node = alloc_dummy_extent_buffer(fs_info, nodesize);
|
|
if (!root->node) {
|
|
test_std_err(TEST_ALLOC_ROOT);
|
|
goto out;
|
|
}
|
|
|
|
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, sectorsize, sectorsize, sectorsize, 0, sectorsize,
|
|
sectorsize, BTRFS_FILE_EXTENT_REG, 0, 1);
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, 2 * sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (em->disk_bytenr != EXTENT_MAP_HOLE) {
|
|
test_err("expected a hole, got %llu", em->disk_bytenr);
|
|
goto out;
|
|
}
|
|
if (em->start != 0 || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start 0 len %u, got start %llu len %llu",
|
|
sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != vacancy_only) {
|
|
test_err("wrong flags, wanted %u, have %u", vacancy_only,
|
|
em->flags);
|
|
goto out;
|
|
}
|
|
free_extent_map(em);
|
|
|
|
em = btrfs_get_extent(BTRFS_I(inode), NULL, sectorsize, 2 * sectorsize);
|
|
if (IS_ERR(em)) {
|
|
test_err("got an error when we shouldn't have");
|
|
goto out;
|
|
}
|
|
if (extent_map_block_start(em) != sectorsize) {
|
|
test_err("expected a real extent, got %llu", extent_map_block_start(em));
|
|
goto out;
|
|
}
|
|
if (em->start != sectorsize || em->len != sectorsize) {
|
|
test_err(
|
|
"unexpected extent wanted start %u len %u, got start %llu len %llu",
|
|
sectorsize, sectorsize, em->start, em->len);
|
|
goto out;
|
|
}
|
|
if (em->flags != 0) {
|
|
test_err("unexpected flags set, wanted 0 got %u",
|
|
em->flags);
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
out:
|
|
if (!IS_ERR(em))
|
|
free_extent_map(em);
|
|
iput(inode);
|
|
btrfs_free_dummy_root(root);
|
|
btrfs_free_dummy_fs_info(fs_info);
|
|
return ret;
|
|
}
|
|
|
|
static int test_extent_accounting(u32 sectorsize, u32 nodesize)
|
|
{
|
|
struct btrfs_fs_info *fs_info = NULL;
|
|
struct inode *inode = NULL;
|
|
struct btrfs_root *root = NULL;
|
|
int ret = -ENOMEM;
|
|
|
|
test_msg("running outstanding_extents tests");
|
|
|
|
inode = btrfs_new_test_inode();
|
|
if (!inode) {
|
|
test_std_err(TEST_ALLOC_INODE);
|
|
return ret;
|
|
}
|
|
|
|
fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize);
|
|
if (!fs_info) {
|
|
test_std_err(TEST_ALLOC_FS_INFO);
|
|
goto out;
|
|
}
|
|
|
|
root = btrfs_alloc_dummy_root(fs_info);
|
|
if (IS_ERR(root)) {
|
|
test_std_err(TEST_ALLOC_ROOT);
|
|
goto out;
|
|
}
|
|
|
|
BTRFS_I(inode)->root = root;
|
|
|
|
/* [BTRFS_MAX_EXTENT_SIZE] */
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode), 0,
|
|
BTRFS_MAX_EXTENT_SIZE - 1, 0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 1) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 1, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode), BTRFS_MAX_EXTENT_SIZE,
|
|
BTRFS_MAX_EXTENT_SIZE + sectorsize - 1,
|
|
0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 2) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 2, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/* [BTRFS_MAX_EXTENT_SIZE/2][sectorsize HOLE][the rest] */
|
|
ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
|
|
BTRFS_MAX_EXTENT_SIZE >> 1,
|
|
(BTRFS_MAX_EXTENT_SIZE >> 1) + sectorsize - 1,
|
|
EXTENT_DELALLOC | EXTENT_DELALLOC_NEW |
|
|
EXTENT_UPTODATE, NULL);
|
|
if (ret) {
|
|
test_err("clear_extent_bit returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 2) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 2, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/* [BTRFS_MAX_EXTENT_SIZE][sectorsize] */
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode), BTRFS_MAX_EXTENT_SIZE >> 1,
|
|
(BTRFS_MAX_EXTENT_SIZE >> 1)
|
|
+ sectorsize - 1,
|
|
0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 2) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 2, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize HOLE][BTRFS_MAX_EXTENT_SIZE+sectorsize]
|
|
*/
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode),
|
|
BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize,
|
|
(BTRFS_MAX_EXTENT_SIZE << 1) + 3 * sectorsize - 1,
|
|
0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 4) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 4, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* [BTRFS_MAX_EXTENT_SIZE+sectorsize][sectorsize][BTRFS_MAX_EXTENT_SIZE+sectorsize]
|
|
*/
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode),
|
|
BTRFS_MAX_EXTENT_SIZE + sectorsize,
|
|
BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 3) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 3, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/* [BTRFS_MAX_EXTENT_SIZE+4k][4K HOLE][BTRFS_MAX_EXTENT_SIZE+4k] */
|
|
ret = clear_extent_bit(&BTRFS_I(inode)->io_tree,
|
|
BTRFS_MAX_EXTENT_SIZE + sectorsize,
|
|
BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1,
|
|
EXTENT_DELALLOC | EXTENT_DELALLOC_NEW |
|
|
EXTENT_UPTODATE, NULL);
|
|
if (ret) {
|
|
test_err("clear_extent_bit returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 4) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 4, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Refill the hole again just for good measure, because I thought it
|
|
* might fail and I'd rather satisfy my paranoia at this point.
|
|
*/
|
|
ret = btrfs_set_extent_delalloc(BTRFS_I(inode),
|
|
BTRFS_MAX_EXTENT_SIZE + sectorsize,
|
|
BTRFS_MAX_EXTENT_SIZE + 2 * sectorsize - 1, 0, NULL);
|
|
if (ret) {
|
|
test_err("btrfs_set_extent_delalloc returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents != 3) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 3, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
|
|
/* Empty */
|
|
ret = clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
|
|
EXTENT_DELALLOC | EXTENT_DELALLOC_NEW |
|
|
EXTENT_UPTODATE, NULL);
|
|
if (ret) {
|
|
test_err("clear_extent_bit returned %d", ret);
|
|
goto out;
|
|
}
|
|
if (BTRFS_I(inode)->outstanding_extents) {
|
|
ret = -EINVAL;
|
|
test_err("miscount, wanted 0, got %u",
|
|
BTRFS_I(inode)->outstanding_extents);
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
out:
|
|
if (ret)
|
|
clear_extent_bit(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
|
|
EXTENT_DELALLOC | EXTENT_DELALLOC_NEW |
|
|
EXTENT_UPTODATE, NULL);
|
|
iput(inode);
|
|
btrfs_free_dummy_root(root);
|
|
btrfs_free_dummy_fs_info(fs_info);
|
|
return ret;
|
|
}
|
|
|
|
int btrfs_test_inodes(u32 sectorsize, u32 nodesize)
|
|
{
|
|
int ret;
|
|
|
|
test_msg("running inode tests");
|
|
|
|
compressed_only |= EXTENT_FLAG_COMPRESS_ZLIB;
|
|
prealloc_only |= EXTENT_FLAG_PREALLOC;
|
|
|
|
ret = test_btrfs_get_extent(sectorsize, nodesize);
|
|
if (ret)
|
|
return ret;
|
|
ret = test_hole_first(sectorsize, nodesize);
|
|
if (ret)
|
|
return ret;
|
|
return test_extent_accounting(sectorsize, nodesize);
|
|
}
|