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-rw-r--r--fs/btrfs/check-integrity.c1066
1 files changed, 646 insertions, 420 deletions
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index b669a7d8e49..ce92ae30250 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -37,8 +37,9 @@
* the file system was mounted, (i.e., they have been
* referenced by the super block) or they have been
* written since then and the write completion callback
- * was called and a FLUSH request to the device where
- * these blocks are located was received and completed.
+ * was called and no write error was indicated and a
+ * FLUSH request to the device where these blocks are
+ * located was received and completed.
* 2b. All referenced blocks need to have a generation
* number which is equal to the parent's number.
*
@@ -76,24 +77,33 @@
* the integrity of (super)-block write requests, do not
* enable the config option BTRFS_FS_CHECK_INTEGRITY to
* include and compile the integrity check tool.
+ *
+ * Expect millions of lines of information in the kernel log with an
+ * enabled check_int_print_mask. Therefore set LOG_BUF_SHIFT in the
+ * kernel config to at least 26 (which is 64MB). Usually the value is
+ * limited to 21 (which is 2MB) in init/Kconfig. The file needs to be
+ * changed like this before LOG_BUF_SHIFT can be set to a high value:
+ * config LOG_BUF_SHIFT
+ * int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
+ * range 12 30
*/
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/buffer_head.h>
#include <linux/mutex.h>
-#include <linux/crc32c.h>
#include <linux/genhd.h>
#include <linux/blkdev.h>
#include "ctree.h"
#include "disk-io.h"
+#include "hash.h"
#include "transaction.h"
#include "extent_io.h"
-#include "disk-io.h"
#include "volumes.h"
#include "print-tree.h"
#include "locking.h"
#include "check-integrity.h"
+#include "rcu-string.h"
#define BTRFSIC_BLOCK_HASHTABLE_SIZE 0x10000
#define BTRFSIC_BLOCK_LINK_HASHTABLE_SIZE 0x10000
@@ -104,8 +114,6 @@
#define BTRFSIC_BLOCK_STACK_FRAME_MAGIC_NUMBER 20111300
#define BTRFSIC_TREE_DUMP_MAX_INDENT_LEVEL (200 - 6) /* in characters,
* excluding " [...]" */
-#define BTRFSIC_BLOCK_SIZE PAGE_SIZE
-
#define BTRFSIC_GENERATION_UNKNOWN ((u64)-1)
/*
@@ -125,6 +133,7 @@
#define BTRFSIC_PRINT_MASK_INITIAL_DATABASE 0x00000400
#define BTRFSIC_PRINT_MASK_NUM_COPIES 0x00000800
#define BTRFSIC_PRINT_MASK_TREE_WITH_ALL_MIRRORS 0x00001000
+#define BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE 0x00002000
struct btrfsic_dev_state;
struct btrfsic_state;
@@ -138,7 +147,7 @@ struct btrfsic_block {
unsigned int never_written:1; /* block was added because it was
* referenced, not because it was
* written */
- unsigned int mirror_num:2; /* large enough to hold
+ unsigned int mirror_num; /* large enough to hold
* BTRFS_SUPER_MIRROR_MAX */
struct btrfsic_dev_state *dev_state;
u64 dev_bytenr; /* key, physical byte num on disk */
@@ -211,8 +220,9 @@ struct btrfsic_block_data_ctx {
u64 dev_bytenr; /* physical bytenr on device */
u32 len;
struct btrfsic_dev_state *dev;
- char *data;
- struct buffer_head *bh; /* do not use if set to NULL */
+ char **datav;
+ struct page **pagev;
+ void *mem_to_free;
};
/* This structure is used to implement recursion without occupying
@@ -244,6 +254,8 @@ struct btrfsic_state {
struct btrfs_root *root;
u64 max_superblock_generation;
struct btrfsic_block *latest_superblock;
+ u32 metablock_size;
+ u32 datablock_size;
};
static void btrfsic_block_init(struct btrfsic_block *b);
@@ -291,8 +303,10 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
static int btrfsic_process_metablock(struct btrfsic_state *state,
struct btrfsic_block *block,
struct btrfsic_block_data_ctx *block_ctx,
- struct btrfs_header *hdr,
int limit_nesting, int force_iodone_flag);
+static void btrfsic_read_from_block_data(
+ struct btrfsic_block_data_ctx *block_ctx,
+ void *dst, u32 offset, size_t len);
static int btrfsic_create_link_to_next_block(
struct btrfsic_state *state,
struct btrfsic_block *block,
@@ -320,11 +334,11 @@ static int btrfsic_read_block(struct btrfsic_state *state,
struct btrfsic_block_data_ctx *block_ctx);
static void btrfsic_dump_database(struct btrfsic_state *state);
static int btrfsic_test_for_metadata(struct btrfsic_state *state,
- const u8 *data, unsigned int size);
+ char **datav, unsigned int num_pages);
static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
- u64 dev_bytenr, u8 *mapped_data,
- unsigned int len, struct bio *bio,
- int *bio_is_patched,
+ u64 dev_bytenr, char **mapped_datav,
+ unsigned int num_pages,
+ struct bio *bio, int *bio_is_patched,
struct buffer_head *bh,
int submit_bio_bh_rw);
static int btrfsic_process_written_superblock(
@@ -376,7 +390,7 @@ static struct btrfsic_dev_state *btrfsic_dev_state_lookup(
static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
u64 bytenr,
struct btrfsic_dev_state *dev_state,
- u64 dev_bytenr, char *data);
+ u64 dev_bytenr);
static struct mutex btrfsic_mutex;
static int btrfsic_is_initialized;
@@ -644,7 +658,7 @@ static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup(
static int btrfsic_process_superblock(struct btrfsic_state *state,
struct btrfs_fs_devices *fs_devices)
{
- int ret;
+ int ret = 0;
struct btrfs_super_block *selected_super;
struct list_head *dev_head = &fs_devices->devices;
struct btrfs_device *device;
@@ -652,7 +666,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
int pass;
BUG_ON(NULL == state);
- selected_super = kmalloc(sizeof(*selected_super), GFP_NOFS);
+ selected_super = kzalloc(sizeof(*selected_super), GFP_NOFS);
if (NULL == selected_super) {
printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
return -1;
@@ -696,15 +710,13 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
next_bytenr = btrfs_super_root(selected_super);
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "root@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "root@%llu\n", next_bytenr);
break;
case 1:
next_bytenr = btrfs_super_chunk_root(selected_super);
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "chunk@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "chunk@%llu\n", next_bytenr);
break;
case 2:
next_bytenr = btrfs_super_log_root(selected_super);
@@ -712,33 +724,31 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
continue;
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "log@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "log@%llu\n", next_bytenr);
break;
}
num_copies =
- btrfs_num_copies(&state->root->fs_info->mapping_tree,
- next_bytenr, PAGE_SIZE);
+ btrfs_num_copies(state->root->fs_info,
+ next_bytenr, state->metablock_size);
if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
- (unsigned long long)next_bytenr, num_copies);
+ next_bytenr, num_copies);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
struct btrfsic_block *next_block;
struct btrfsic_block_data_ctx tmp_next_block_ctx;
struct btrfsic_block_link *l;
- struct btrfs_header *hdr;
- ret = btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+ ret = btrfsic_map_block(state, next_bytenr,
+ state->metablock_size,
&tmp_next_block_ctx,
mirror_num);
if (ret) {
printk(KERN_INFO "btrfsic:"
" btrfsic_map_block(root @%llu,"
" mirror %d) failed!\n",
- (unsigned long long)next_bytenr,
- mirror_num);
+ next_bytenr, mirror_num);
kfree(selected_super);
return -1;
}
@@ -759,21 +769,18 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
BUG_ON(NULL == l);
ret = btrfsic_read_block(state, &tmp_next_block_ctx);
- if (ret < (int)BTRFSIC_BLOCK_SIZE) {
+ if (ret < (int)PAGE_CACHE_SIZE) {
printk(KERN_INFO
"btrfsic: read @logical %llu failed!\n",
- (unsigned long long)
tmp_next_block_ctx.start);
btrfsic_release_block_ctx(&tmp_next_block_ctx);
kfree(selected_super);
return -1;
}
- hdr = (struct btrfs_header *)tmp_next_block_ctx.data;
ret = btrfsic_process_metablock(state,
next_block,
&tmp_next_block_ctx,
- hdr,
BTRFS_MAX_LEVEL + 3, 1);
btrfsic_release_block_ctx(&tmp_next_block_ctx);
}
@@ -800,16 +807,21 @@ static int btrfsic_process_superblock_dev_mirror(
/* super block bytenr is always the unmapped device bytenr */
dev_bytenr = btrfs_sb_offset(superblock_mirror_num);
- bh = __bread(superblock_bdev, dev_bytenr / 4096, 4096);
+ if (dev_bytenr + BTRFS_SUPER_INFO_SIZE > device->total_bytes)
+ return -1;
+ bh = __bread(superblock_bdev, dev_bytenr / 4096,
+ BTRFS_SUPER_INFO_SIZE);
if (NULL == bh)
return -1;
super_tmp = (struct btrfs_super_block *)
(bh->b_data + (dev_bytenr & 4095));
if (btrfs_super_bytenr(super_tmp) != dev_bytenr ||
- strncmp((char *)(&(super_tmp->magic)), BTRFS_MAGIC,
- sizeof(super_tmp->magic)) ||
- memcmp(device->uuid, super_tmp->dev_item.uuid, BTRFS_UUID_SIZE)) {
+ btrfs_super_magic(super_tmp) != BTRFS_MAGIC ||
+ memcmp(device->uuid, super_tmp->dev_item.uuid, BTRFS_UUID_SIZE) ||
+ btrfs_super_nodesize(super_tmp) != state->metablock_size ||
+ btrfs_super_leafsize(super_tmp) != state->metablock_size ||
+ btrfs_super_sectorsize(super_tmp) != state->datablock_size) {
brelse(bh);
return 0;
}
@@ -836,13 +848,12 @@ static int btrfsic_process_superblock_dev_mirror(
superblock_tmp->never_written = 0;
superblock_tmp->mirror_num = 1 + superblock_mirror_num;
if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
- printk(KERN_INFO "New initial S-block (bdev %p, %s)"
- " @%llu (%s/%llu/%d)\n",
- superblock_bdev, device->name,
- (unsigned long long)dev_bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
- superblock_mirror_num);
+ printk_in_rcu(KERN_INFO "New initial S-block (bdev %p, %s)"
+ " @%llu (%s/%llu/%d)\n",
+ superblock_bdev,
+ rcu_str_deref(device->name), dev_bytenr,
+ dev_state->name, dev_bytenr,
+ superblock_mirror_num);
list_add(&superblock_tmp->all_blocks_node,
&state->all_blocks_list);
btrfsic_block_hashtable_add(superblock_tmp,
@@ -871,20 +882,20 @@ static int btrfsic_process_superblock_dev_mirror(
tmp_disk_key.offset = 0;
switch (pass) {
case 0:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_ROOT_TREE_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_ROOT_TREE_OBJECTID);
additional_string = "initial root ";
next_bytenr = btrfs_super_root(super_tmp);
break;
case 1:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_CHUNK_TREE_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_CHUNK_TREE_OBJECTID);
additional_string = "initial chunk ";
next_bytenr = btrfs_super_chunk_root(super_tmp);
break;
case 2:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_TREE_LOG_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_TREE_LOG_OBJECTID);
additional_string = "initial log ";
next_bytenr = btrfs_super_log_root(super_tmp);
if (0 == next_bytenr)
@@ -893,23 +904,23 @@ static int btrfsic_process_superblock_dev_mirror(
}
num_copies =
- btrfs_num_copies(&state->root->fs_info->mapping_tree,
- next_bytenr, PAGE_SIZE);
+ btrfs_num_copies(state->root->fs_info,
+ next_bytenr, state->metablock_size);
if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
- (unsigned long long)next_bytenr, num_copies);
+ next_bytenr, num_copies);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
struct btrfsic_block *next_block;
struct btrfsic_block_data_ctx tmp_next_block_ctx;
struct btrfsic_block_link *l;
- if (btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+ if (btrfsic_map_block(state, next_bytenr,
+ state->metablock_size,
&tmp_next_block_ctx,
mirror_num)) {
printk(KERN_INFO "btrfsic: btrfsic_map_block("
"bytenr @%llu, mirror %d) failed!\n",
- (unsigned long long)next_bytenr,
- mirror_num);
+ next_bytenr, mirror_num);
brelse(bh);
return -1;
}
@@ -967,13 +978,15 @@ static int btrfsic_process_metablock(
struct btrfsic_state *state,
struct btrfsic_block *const first_block,
struct btrfsic_block_data_ctx *const first_block_ctx,
- struct btrfs_header *const first_hdr,
int first_limit_nesting, int force_iodone_flag)
{
struct btrfsic_stack_frame initial_stack_frame = { 0 };
struct btrfsic_stack_frame *sf;
struct btrfsic_stack_frame *next_stack;
+ struct btrfs_header *const first_hdr =
+ (struct btrfs_header *)first_block_ctx->datav[0];
+ BUG_ON(!first_hdr);
sf = &initial_stack_frame;
sf->error = 0;
sf->i = -1;
@@ -991,19 +1004,17 @@ continue_with_new_stack_frame:
(struct btrfs_leaf *)sf->hdr;
if (-1 == sf->i) {
- sf->nr = le32_to_cpu(leafhdr->header.nritems);
+ sf->nr = btrfs_stack_header_nritems(&leafhdr->header);
if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO
"leaf %llu items %d generation %llu"
" owner %llu\n",
- (unsigned long long)
- sf->block_ctx->start,
- sf->nr,
- (unsigned long long)
- le64_to_cpu(leafhdr->header.generation),
- (unsigned long long)
- le64_to_cpu(leafhdr->header.owner));
+ sf->block_ctx->start, sf->nr,
+ btrfs_stack_header_generation(
+ &leafhdr->header),
+ btrfs_stack_header_owner(
+ &leafhdr->header));
}
continue_with_current_leaf_stack_frame:
@@ -1013,21 +1024,48 @@ continue_with_current_leaf_stack_frame:
}
if (sf->i < sf->nr) {
- struct btrfs_item *disk_item = leafhdr->items + sf->i;
- struct btrfs_disk_key *disk_key = &disk_item->key;
+ struct btrfs_item disk_item;
+ u32 disk_item_offset =
+ (uintptr_t)(leafhdr->items + sf->i) -
+ (uintptr_t)leafhdr;
+ struct btrfs_disk_key *disk_key;
u8 type;
- const u32 item_offset = le32_to_cpu(disk_item->offset);
+ u32 item_offset;
+ u32 item_size;
- type = disk_key->type;
+ if (disk_item_offset + sizeof(struct btrfs_item) >
+ sf->block_ctx->len) {
+leaf_item_out_of_bounce_error:
+ printk(KERN_INFO
+ "btrfsic: leaf item out of bounce at logical %llu, dev %s\n",
+ sf->block_ctx->start,
+ sf->block_ctx->dev->name);
+ goto one_stack_frame_backwards;
+ }
+ btrfsic_read_from_block_data(sf->block_ctx,
+ &disk_item,
+ disk_item_offset,
+ sizeof(struct btrfs_item));
+ item_offset = btrfs_stack_item_offset(&disk_item);
+ item_size = btrfs_stack_item_size(&disk_item);
+ disk_key = &disk_item.key;
+ type = btrfs_disk_key_type(disk_key);
if (BTRFS_ROOT_ITEM_KEY == type) {
- const struct btrfs_root_item *const root_item =
- (struct btrfs_root_item *)
- (sf->block_ctx->data +
- offsetof(struct btrfs_leaf, items) +
- item_offset);
- const u64 next_bytenr =
- le64_to_cpu(root_item->bytenr);
+ struct btrfs_root_item root_item;
+ u32 root_item_offset;
+ u64 next_bytenr;
+
+ root_item_offset = item_offset +
+ offsetof(struct btrfs_leaf, items);
+ if (root_item_offset + item_size >
+ sf->block_ctx->len)
+ goto leaf_item_out_of_bounce_error;
+ btrfsic_read_from_block_data(
+ sf->block_ctx, &root_item,
+ root_item_offset,
+ item_size);
+ next_bytenr = btrfs_root_bytenr(&root_item);
sf->error =
btrfsic_create_link_to_next_block(
@@ -1042,19 +1080,20 @@ continue_with_current_leaf_stack_frame:
&sf->num_copies,
&sf->mirror_num,
disk_key,
- le64_to_cpu(root_item->
- generation));
+ btrfs_root_generation(
+ &root_item));
if (sf->error)
goto one_stack_frame_backwards;
if (NULL != sf->next_block) {
struct btrfs_header *const next_hdr =
(struct btrfs_header *)
- sf->next_block_ctx.data;
+ sf->next_block_ctx.datav[0];
next_stack =
btrfsic_stack_frame_alloc();
if (NULL == next_stack) {
+ sf->error = -1;
btrfsic_release_block_ctx(
&sf->
next_block_ctx);
@@ -1091,18 +1130,17 @@ continue_with_current_leaf_stack_frame:
struct btrfs_node *const nodehdr = (struct btrfs_node *)sf->hdr;
if (-1 == sf->i) {
- sf->nr = le32_to_cpu(nodehdr->header.nritems);
+ sf->nr = btrfs_stack_header_nritems(&nodehdr->header);
if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO "node %llu level %d items %d"
" generation %llu owner %llu\n",
- (unsigned long long)
sf->block_ctx->start,
nodehdr->header.level, sf->nr,
- (unsigned long long)
- le64_to_cpu(nodehdr->header.generation),
- (unsigned long long)
- le64_to_cpu(nodehdr->header.owner));
+ btrfs_stack_header_generation(
+ &nodehdr->header),
+ btrfs_stack_header_owner(
+ &nodehdr->header));
}
continue_with_current_node_stack_frame:
@@ -1112,10 +1150,24 @@ continue_with_current_node_stack_frame:
}
if (sf->i < sf->nr) {
- struct btrfs_key_ptr *disk_key_ptr =
- nodehdr->ptrs + sf->i;
- const u64 next_bytenr =
- le64_to_cpu(disk_key_ptr->blockptr);
+ struct btrfs_key_ptr key_ptr;
+ u32 key_ptr_offset;
+ u64 next_bytenr;
+
+ key_ptr_offset = (uintptr_t)(nodehdr->ptrs + sf->i) -
+ (uintptr_t)nodehdr;
+ if (key_ptr_offset + sizeof(struct btrfs_key_ptr) >
+ sf->block_ctx->len) {
+ printk(KERN_INFO
+ "btrfsic: node item out of bounce at logical %llu, dev %s\n",
+ sf->block_ctx->start,
+ sf->block_ctx->dev->name);
+ goto one_stack_frame_backwards;
+ }
+ btrfsic_read_from_block_data(
+ sf->block_ctx, &key_ptr, key_ptr_offset,
+ sizeof(struct btrfs_key_ptr));
+ next_bytenr = btrfs_stack_key_blockptr(&key_ptr);
sf->error = btrfsic_create_link_to_next_block(
state,
@@ -1128,19 +1180,21 @@ continue_with_current_node_stack_frame:
force_iodone_flag,
&sf->num_copies,
&sf->mirror_num,
- &disk_key_ptr->key,
- le64_to_cpu(disk_key_ptr->generation));
+ &key_ptr.key,
+ btrfs_stack_key_generation(&key_ptr));
if (sf->error)
goto one_stack_frame_backwards;
if (NULL != sf->next_block) {
struct btrfs_header *const next_hdr =
(struct btrfs_header *)
- sf->next_block_ctx.data;
+ sf->next_block_ctx.datav[0];
next_stack = btrfsic_stack_frame_alloc();
- if (NULL == next_stack)
+ if (NULL == next_stack) {
+ sf->error = -1;
goto one_stack_frame_backwards;
+ }
next_stack->i = -1;
next_stack->block = sf->next_block;
@@ -1182,6 +1236,34 @@ one_stack_frame_backwards:
return sf->error;
}
+static void btrfsic_read_from_block_data(
+ struct btrfsic_block_data_ctx *block_ctx,
+ void *dstv, u32 offset, size_t len)
+{
+ size_t cur;
+ size_t offset_in_page;
+ char *kaddr;
+ char *dst = (char *)dstv;
+ size_t start_offset = block_ctx->start & ((u64)PAGE_CACHE_SIZE - 1);
+ unsigned long i = (start_offset + offset) >> PAGE_CACHE_SHIFT;
+
+ WARN_ON(offset + len > block_ctx->len);
+ offset_in_page = (start_offset + offset) & (PAGE_CACHE_SIZE - 1);
+
+ while (len > 0) {
+ cur = min(len, ((size_t)PAGE_CACHE_SIZE - offset_in_page));
+ BUG_ON(i >= (block_ctx->len + PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT);
+ kaddr = block_ctx->datav[i];
+ memcpy(dst, kaddr + offset_in_page, cur);
+
+ dst += cur;
+ len -= cur;
+ offset_in_page = 0;
+ i++;
+ }
+}
+
static int btrfsic_create_link_to_next_block(
struct btrfsic_state *state,
struct btrfsic_block *block,
@@ -1204,11 +1286,11 @@ static int btrfsic_create_link_to_next_block(
*next_blockp = NULL;
if (0 == *num_copiesp) {
*num_copiesp =
- btrfs_num_copies(&state->root->fs_info->mapping_tree,
- next_bytenr, PAGE_SIZE);
+ btrfs_num_copies(state->root->fs_info,
+ next_bytenr, state->metablock_size);
if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
- (unsigned long long)next_bytenr, *num_copiesp);
+ next_bytenr, *num_copiesp);
*mirror_nump = 1;
}
@@ -1220,12 +1302,12 @@ static int btrfsic_create_link_to_next_block(
"btrfsic_create_link_to_next_block(mirror_num=%d)\n",
*mirror_nump);
ret = btrfsic_map_block(state, next_bytenr,
- BTRFSIC_BLOCK_SIZE,
+ state->metablock_size,
next_block_ctx, *mirror_nump);
if (ret) {
printk(KERN_INFO
"btrfsic: btrfsic_map_block(@%llu, mirror=%d) failed!\n",
- (unsigned long long)next_bytenr, *mirror_nump);
+ next_bytenr, *mirror_nump);
btrfsic_release_block_ctx(next_block_ctx);
*next_blockp = NULL;
return -1;
@@ -1253,20 +1335,16 @@ static int btrfsic_create_link_to_next_block(
"Referenced block @%llu (%s/%llu/%d)"
" found in hash table, %c,"
" bytenr mismatch (!= stored %llu).\n",
- (unsigned long long)next_bytenr,
- next_block_ctx->dev->name,
- (unsigned long long)next_block_ctx->dev_bytenr,
- *mirror_nump,
+ next_bytenr, next_block_ctx->dev->name,
+ next_block_ctx->dev_bytenr, *mirror_nump,
btrfsic_get_block_type(state, next_block),
- (unsigned long long)next_block->logical_bytenr);
+ next_block->logical_bytenr);
} else if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO
"Referenced block @%llu (%s/%llu/%d)"
" found in hash table, %c.\n",
- (unsigned long long)next_bytenr,
- next_block_ctx->dev->name,
- (unsigned long long)next_block_ctx->dev_bytenr,
- *mirror_nump,
+ next_bytenr, next_block_ctx->dev->name,
+ next_block_ctx->dev_bytenr, *mirror_nump,
btrfsic_get_block_type(state, next_block));
next_block->logical_bytenr = next_bytenr;
@@ -1315,10 +1393,10 @@ static int btrfsic_create_link_to_next_block(
if (limit_nesting > 0 && did_alloc_block_link) {
ret = btrfsic_read_block(state, next_block_ctx);
- if (ret < (int)BTRFSIC_BLOCK_SIZE) {
+ if (ret < (int)next_block_ctx->len) {
printk(KERN_INFO
"btrfsic: read block @logical %llu failed!\n",
- (unsigned long long)next_bytenr);
+ next_bytenr);
btrfsic_release_block_ctx(next_block_ctx);
*next_blockp = NULL;
return -1;
@@ -1340,46 +1418,80 @@ static int btrfsic_handle_extent_data(
u32 item_offset, int force_iodone_flag)
{
int ret;
- struct btrfs_file_extent_item *file_extent_item =
- (struct btrfs_file_extent_item *)(block_ctx->data +
- offsetof(struct btrfs_leaf,
- items) + item_offset);
- u64 next_bytenr =
- le64_to_cpu(file_extent_item->disk_bytenr) +
- le64_to_cpu(file_extent_item->offset);
- u64 num_bytes = le64_to_cpu(file_extent_item->num_bytes);
- u64 generation = le64_to_cpu(file_extent_item->generation);
+ struct btrfs_file_extent_item file_extent_item;
+ u64 file_extent_item_offset;
+ u64 next_bytenr;
+ u64 num_bytes;
+ u64 generation;
struct btrfsic_block_link *l;
+ file_extent_item_offset = offsetof(struct btrfs_leaf, items) +
+ item_offset;
+ if (file_extent_item_offset +
+ offsetof(struct btrfs_file_extent_item, disk_num_bytes) >
+ block_ctx->len) {
+ printk(KERN_INFO
+ "btrfsic: file item out of bounce at logical %llu, dev %s\n",
+ block_ctx->start, block_ctx->dev->name);
+ return -1;
+ }
+
+ btrfsic_read_from_block_data(block_ctx, &file_extent_item,
+ file_extent_item_offset,
+ offsetof(struct btrfs_file_extent_item, disk_num_bytes));
+ if (BTRFS_FILE_EXTENT_REG != file_extent_item.type ||
+ btrfs_stack_file_extent_disk_bytenr(&file_extent_item) == 0) {
+ if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
+ printk(KERN_INFO "extent_data: type %u, disk_bytenr = %llu\n",
+ file_extent_item.type,
+ btrfs_stack_file_extent_disk_bytenr(
+ &file_extent_item));
+ return 0;
+ }
+
+ if (file_extent_item_offset + sizeof(struct btrfs_file_extent_item) >
+ block_ctx->len) {
+ printk(KERN_INFO
+ "btrfsic: file item out of bounce at logical %llu, dev %s\n",
+ block_ctx->start, block_ctx->dev->name);
+ return -1;
+ }
+ btrfsic_read_from_block_data(block_ctx, &file_extent_item,
+ file_extent_item_offset,
+ sizeof(struct btrfs_file_extent_item));
+ next_bytenr = btrfs_stack_file_extent_disk_bytenr(&file_extent_item);
+ if (btrfs_stack_file_extent_compression(&file_extent_item) ==
+ BTRFS_COMPRESS_NONE) {
+ next_bytenr += btrfs_stack_file_extent_offset(&file_extent_item);
+ num_bytes = btrfs_stack_file_extent_num_bytes(&file_extent_item);
+ } else {
+ num_bytes = btrfs_stack_file_extent_disk_num_bytes(&file_extent_item);
+ }
+ generation = btrfs_stack_file_extent_generation(&file_extent_item);
+
if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
printk(KERN_INFO "extent_data: type %u, disk_bytenr = %llu,"
" offset = %llu, num_bytes = %llu\n",
- file_extent_item->type,
- (unsigned long long)
- le64_to_cpu(file_extent_item->disk_bytenr),
- (unsigned long long)
- le64_to_cpu(file_extent_item->offset),
- (unsigned long long)
- le64_to_cpu(file_extent_item->num_bytes));
- if (BTRFS_FILE_EXTENT_REG != file_extent_item->type ||
- ((u64)0) == le64_to_cpu(file_extent_item->disk_bytenr))
- return 0;
+ file_extent_item.type,
+ btrfs_stack_file_extent_disk_bytenr(&file_extent_item),
+ btrfs_stack_file_extent_offset(&file_extent_item),
+ num_bytes);
while (num_bytes > 0) {
u32 chunk_len;
int num_copies;
int mirror_num;
- if (num_bytes > BTRFSIC_BLOCK_SIZE)
- chunk_len = BTRFSIC_BLOCK_SIZE;
+ if (num_bytes > state->datablock_size)
+ chunk_len = state->datablock_size;
else
chunk_len = num_bytes;
num_copies =
- btrfs_num_copies(&state->root->fs_info->mapping_tree,
- next_bytenr, PAGE_SIZE);
+ btrfs_num_copies(state->root->fs_info,
+ next_bytenr, state->datablock_size);
if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
- (unsigned long long)next_bytenr, num_copies);
+ next_bytenr, num_copies);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
struct btrfsic_block_data_ctx next_block_ctx;
struct btrfsic_block *next_block;
@@ -1391,8 +1503,7 @@ static int btrfsic_handle_extent_data(
if (state->print_mask & BTRFSIC_PRINT_MASK_VERY_VERBOSE)
printk(KERN_INFO
"\tdisk_bytenr = %llu, num_bytes %u\n",
- (unsigned long long)next_bytenr,
- chunk_len);
+ next_bytenr, chunk_len);
ret = btrfsic_map_block(state, next_bytenr,
chunk_len, &next_block_ctx,
mirror_num);
@@ -1400,8 +1511,7 @@ static int btrfsic_handle_extent_data(
printk(KERN_INFO
"btrfsic: btrfsic_map_block(@%llu,"
" mirror=%d) failed!\n",
- (unsigned long long)next_bytenr,
- mirror_num);
+ next_bytenr, mirror_num);
return -1;
}
@@ -1430,12 +1540,10 @@ static int btrfsic_handle_extent_data(
" found in hash table, D,"
" bytenr mismatch"
" (!= stored %llu).\n",
- (unsigned long long)next_bytenr,
+ next_bytenr,
next_block_ctx.dev->name,
- (unsigned long long)
next_block_ctx.dev_bytenr,
mirror_num,
- (unsigned long long)
next_block->logical_bytenr);
}
next_block->logical_bytenr = next_bytenr;
@@ -1468,19 +1576,31 @@ static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
struct btrfs_device *device;
length = len;
- ret = btrfs_map_block(&state->root->fs_info->mapping_tree, READ,
+ ret = btrfs_map_block(state->root->fs_info, READ,
bytenr, &length, &multi, mirror_num);
+ if (ret) {
+ block_ctx_out->start = 0;
+ block_ctx_out->dev_bytenr = 0;
+ block_ctx_out->len = 0;
+ block_ctx_out->dev = NULL;
+ block_ctx_out->datav = NULL;
+ block_ctx_out->pagev = NULL;
+ block_ctx_out->mem_to_free = NULL;
+
+ return ret;
+ }
+
device = multi->stripes[0].dev;
block_ctx_out->dev = btrfsic_dev_state_lookup(device->bdev);
block_ctx_out->dev_bytenr = multi->stripes[0].physical;
block_ctx_out->start = bytenr;
block_ctx_out->len = len;
- block_ctx_out->data = NULL;
- block_ctx_out->bh = NULL;
+ block_ctx_out->datav = NULL;
+ block_ctx_out->pagev = NULL;
+ block_ctx_out->mem_to_free = NULL;
- if (0 == ret)
- kfree(multi);
+ kfree(multi);
if (NULL == block_ctx_out->dev) {
ret = -ENXIO;
printk(KERN_INFO "btrfsic: error, cannot lookup dev (#1)!\n");
@@ -1497,8 +1617,9 @@ static int btrfsic_map_superblock(struct btrfsic_state *state, u64 bytenr,
block_ctx_out->dev_bytenr = bytenr;
block_ctx_out->start = bytenr;
block_ctx_out->len = len;
- block_ctx_out->data = NULL;
- block_ctx_out->bh = NULL;
+ block_ctx_out->datav = NULL;
+ block_ctx_out->pagev = NULL;
+ block_ctx_out->mem_to_free = NULL;
if (NULL != block_ctx_out->dev) {
return 0;
} else {
@@ -1509,34 +1630,110 @@ static int btrfsic_map_superblock(struct btrfsic_state *state, u64 bytenr,
static void btrfsic_release_block_ctx(struct btrfsic_block_data_ctx *block_ctx)
{
- if (NULL != block_ctx->bh) {
- brelse(block_ctx->bh);
- block_ctx->bh = NULL;
+ if (block_ctx->mem_to_free) {
+ unsigned int num_pages;
+
+ BUG_ON(!block_ctx->datav);
+ BUG_ON(!block_ctx->pagev);
+ num_pages = (block_ctx->len + (u64)PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
+ while (num_pages > 0) {
+ num_pages--;
+ if (block_ctx->datav[num_pages]) {
+ kunmap(block_ctx->pagev[num_pages]);
+ block_ctx->datav[num_pages] = NULL;
+ }
+ if (block_ctx->pagev[num_pages]) {
+ __free_page(block_ctx->pagev[num_pages]);
+ block_ctx->pagev[num_pages] = NULL;
+ }
+ }
+
+ kfree(block_ctx->mem_to_free);
+ block_ctx->mem_to_free = NULL;
+ block_ctx->pagev = NULL;
+ block_ctx->datav = NULL;
}
}
static int btrfsic_read_block(struct btrfsic_state *state,
struct btrfsic_block_data_ctx *block_ctx)
{
- block_ctx->bh = NULL;
- if (block_ctx->dev_bytenr & 4095) {
+ unsigned int num_pages;
+ unsigned int i;
+ u64 dev_bytenr;
+ int ret;
+
+ BUG_ON(block_ctx->datav);
+ BUG_ON(block_ctx->pagev);
+ BUG_ON(block_ctx->mem_to_free);
+ if (block_ctx->dev_bytenr & ((u64)PAGE_CACHE_SIZE - 1)) {
printk(KERN_INFO
"btrfsic: read_block() with unaligned bytenr %llu\n",
- (unsigned long long)block_ctx->dev_bytenr);
+ block_ctx->dev_bytenr);
return -1;
}
- if (block_ctx->len > 4096) {
- printk(KERN_INFO
- "btrfsic: read_block() with too huge size %d\n",
- block_ctx->len);
+
+ num_pages = (block_ctx->len + (u64)PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
+ block_ctx->mem_to_free = kzalloc((sizeof(*block_ctx->datav) +
+ sizeof(*block_ctx->pagev)) *
+ num_pages, GFP_NOFS);
+ if (!block_ctx->mem_to_free)
return -1;
+ block_ctx->datav = block_ctx->mem_to_free;
+ block_ctx->pagev = (struct page **)(block_ctx->datav + num_pages);
+ for (i = 0; i < num_pages; i++) {
+ block_ctx->pagev[i] = alloc_page(GFP_NOFS);
+ if (!block_ctx->pagev[i])
+ return -1;
}
- block_ctx->bh = __bread(block_ctx->dev->bdev,
- block_ctx->dev_bytenr >> 12, 4096);
- if (NULL == block_ctx->bh)
- return -1;
- block_ctx->data = block_ctx->bh->b_data;
+ dev_bytenr = block_ctx->dev_bytenr;
+ for (i = 0; i < num_pages;) {
+ struct bio *bio;
+ unsigned int j;
+
+ bio = btrfs_io_bio_alloc(GFP_NOFS, num_pages - i);
+ if (!bio) {
+ printk(KERN_INFO
+ "btrfsic: bio_alloc() for %u pages failed!\n",
+ num_pages - i);
+ return -1;
+ }
+ bio->bi_bdev = block_ctx->dev->bdev;
+ bio->bi_iter.bi_sector = dev_bytenr >> 9;
+
+ for (j = i; j < num_pages; j++) {
+ ret = bio_add_page(bio, block_ctx->pagev[j],
+ PAGE_CACHE_SIZE, 0);
+ if (PAGE_CACHE_SIZE != ret)
+ break;
+ }
+ if (j == i) {
+ printk(KERN_INFO
+ "btrfsic: error, failed to add a single page!\n");
+ return -1;
+ }
+ if (submit_bio_wait(READ, bio)) {
+ printk(KERN_INFO
+ "btrfsic: read error at logical %llu dev %s!\n",
+ block_ctx->start, block_ctx->dev->name);
+ bio_put(bio);
+ return -1;
+ }
+ bio_put(bio);
+ dev_bytenr += (j - i) * PAGE_CACHE_SIZE;
+ i = j;
+ }
+ for (i = 0; i < num_pages; i++) {
+ block_ctx->datav[i] = kmap(block_ctx->pagev[i]);
+ if (!block_ctx->datav[i]) {
+ printk(KERN_INFO "btrfsic: kmap() failed (dev %s)!\n",
+ block_ctx->dev->name);
+ return -1;
+ }
+ }
return block_ctx->len;
}
@@ -1557,10 +1754,8 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
printk(KERN_INFO "%c-block @%llu (%s/%llu/%d)\n",
btrfsic_get_block_type(state, b_all),
- (unsigned long long)b_all->logical_bytenr,
- b_all->dev_state->name,
- (unsigned long long)b_all->dev_bytenr,
- b_all->mirror_num);
+ b_all->logical_bytenr, b_all->dev_state->name,
+ b_all->dev_bytenr, b_all->mirror_num);
list_for_each(elem_ref_to, &b_all->ref_to_list) {
const struct btrfsic_block_link *const l =
@@ -1572,16 +1767,13 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
" refers %u* to"
" %c @%llu (%s/%llu/%d)\n",
btrfsic_get_block_type(state, b_all),
- (unsigned long long)b_all->logical_bytenr,
- b_all->dev_state->name,
- (unsigned long long)b_all->dev_bytenr,
- b_all->mirror_num,
+ b_all->logical_bytenr, b_all->dev_state->name,
+ b_all->dev_bytenr, b_all->mirror_num,
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
}
@@ -1595,16 +1787,12 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
" is ref %u* from"
" %c @%llu (%s/%llu/%d)\n",
btrfsic_get_block_type(state, b_all),
- (unsigned long long)b_all->logical_bytenr,
- b_all->dev_state->name,
- (unsigned long long)b_all->dev_bytenr,
- b_all->mirror_num,
+ b_all->logical_bytenr, b_all->dev_state->name,
+ b_all->dev_bytenr, b_all->mirror_num,
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_from),
- (unsigned long long)
l->block_ref_from->logical_bytenr,
l->block_ref_from->dev_state->name,
- (unsigned long long)
l->block_ref_from->dev_bytenr,
l->block_ref_from->mirror_num);
}
@@ -1618,32 +1806,39 @@ static void btrfsic_dump_database(struct btrfsic_state *state)
* (note that this test fails for the super block)
*/
static int btrfsic_test_for_metadata(struct btrfsic_state *state,
- const u8 *data, unsigned int size)
+ char **datav, unsigned int num_pages)
{
struct btrfs_header *h;
u8 csum[BTRFS_CSUM_SIZE];
u32 crc = ~(u32)0;
- int fail = 0;
- int crc_fail = 0;
+ unsigned int i;
- h = (struct btrfs_header *)data;
+ if (num_pages * PAGE_CACHE_SIZE < state->metablock_size)
+ return 1; /* not metadata */
+ num_pages = state->metablock_size >> PAGE_CACHE_SHIFT;
+ h = (struct btrfs_header *)datav[0];
if (memcmp(h->fsid, state->root->fs_info->fsid, BTRFS_UUID_SIZE))
- fail++;
+ return 1;
- crc = crc32c(crc, data + BTRFS_CSUM_SIZE, PAGE_SIZE - BTRFS_CSUM_SIZE);
+ for (i = 0; i < num_pages; i++) {
+ u8 *data = i ? datav[i] : (datav[i] + BTRFS_CSUM_SIZE);
+ size_t sublen = i ? PAGE_CACHE_SIZE :
+ (PAGE_CACHE_SIZE - BTRFS_CSUM_SIZE);
+
+ crc = btrfs_crc32c(crc, data, sublen);
+ }
btrfs_csum_final(crc, csum);
if (memcmp(csum, h->csum, state->csum_size))
- crc_fail++;
+ return 1;
- return fail || crc_fail;
+ return 0; /* is metadata */
}
static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
- u64 dev_bytenr,
- u8 *mapped_data, unsigned int len,
- struct bio *bio,
- int *bio_is_patched,
+ u64 dev_bytenr, char **mapped_datav,
+ unsigned int num_pages,
+ struct bio *bio, int *bio_is_patched,
struct buffer_head *bh,
int submit_bio_bh_rw)
{
@@ -1653,12 +1848,19 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
int ret;
struct btrfsic_state *state = dev_state->state;
struct block_device *bdev = dev_state->bdev;
+ unsigned int processed_len;
- WARN_ON(len > PAGE_SIZE);
- is_metadata = (0 == btrfsic_test_for_metadata(state, mapped_data, len));
if (NULL != bio_is_patched)
*bio_is_patched = 0;
+again:
+ if (num_pages == 0)
+ return;
+
+ processed_len = 0;
+ is_metadata = (0 == btrfsic_test_for_metadata(state, mapped_datav,
+ num_pages));
+
block = btrfsic_block_hashtable_lookup(bdev, dev_bytenr,
&state->block_hashtable);
if (NULL != block) {
@@ -1667,9 +1869,17 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
struct list_head *tmp_ref_to;
if (block->is_superblock) {
- bytenr = le64_to_cpu(((struct btrfs_super_block *)
- mapped_data)->bytenr);
+ bytenr = btrfs_super_bytenr((struct btrfs_super_block *)
+ mapped_datav[0]);
+ if (num_pages * PAGE_CACHE_SIZE <
+ BTRFS_SUPER_INFO_SIZE) {
+ printk(KERN_INFO
+ "btrfsic: cannot work with too short bios!\n");
+ return;
+ }
is_metadata = 1;
+ BUG_ON(BTRFS_SUPER_INFO_SIZE & (PAGE_CACHE_SIZE - 1));
+ processed_len = BTRFS_SUPER_INFO_SIZE;
if (state->print_mask &
BTRFSIC_PRINT_MASK_TREE_BEFORE_SB_WRITE) {
printk(KERN_INFO
@@ -1679,46 +1889,54 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
}
if (is_metadata) {
if (!block->is_superblock) {
- bytenr = le64_to_cpu(((struct btrfs_header *)
- mapped_data)->bytenr);
+ if (num_pages * PAGE_CACHE_SIZE <
+ state->metablock_size) {
+ printk(KERN_INFO
+ "btrfsic: cannot work with too short bios!\n");
+ return;
+ }
+ processed_len = state->metablock_size;
+ bytenr = btrfs_stack_header_bytenr(
+ (struct btrfs_header *)
+ mapped_datav[0]);
btrfsic_cmp_log_and_dev_bytenr(state, bytenr,
dev_state,
- dev_bytenr,
- mapped_data);
+ dev_bytenr);
}
- if (block->logical_bytenr != bytenr) {
+ if (block->logical_bytenr != bytenr &&
+ !(!block->is_metadata &&
+ block->logical_bytenr == 0))
printk(KERN_INFO
"Written block @%llu (%s/%llu/%d)"
" found in hash table, %c,"
" bytenr mismatch"
" (!= stored %llu).\n",
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
+ bytenr, dev_state->name, dev_bytenr,
block->mirror_num,
btrfsic_get_block_type(state, block),
- (unsigned long long)
block->logical_bytenr);
- block->logical_bytenr = bytenr;
- } else if (state->print_mask &
- BTRFSIC_PRINT_MASK_VERBOSE)
+ else if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO
"Written block @%llu (%s/%llu/%d)"
" found in hash table, %c.\n",
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
+ bytenr, dev_state->name, dev_bytenr,
block->mirror_num,
btrfsic_get_block_type(state, block));
+ block->logical_bytenr = bytenr;
} else {
+ if (num_pages * PAGE_CACHE_SIZE <
+ state->datablock_size) {
+ printk(KERN_INFO
+ "btrfsic: cannot work with too short bios!\n");
+ return;
+ }
+ processed_len = state->datablock_size;
bytenr = block->logical_bytenr;
if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO
"Written block @%llu (%s/%llu/%d)"
" found in hash table, %c.\n",
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
+ bytenr, dev_state->name, dev_bytenr,
block->mirror_num,
btrfsic_get_block_type(state, block));
}
@@ -1735,21 +1953,14 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
" new(gen=%llu),"
" which is referenced by most recent superblock"
" (superblockgen=%llu)!\n",
- btrfsic_get_block_type(state, block),
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
- block->mirror_num,
- (unsigned long long)block->generation,
- (unsigned long long)
- le64_to_cpu(block->disk_key.objectid),
+ btrfsic_get_block_type(state, block), bytenr,
+ dev_state->name, dev_bytenr, block->mirror_num,
+ block->generation,
+ btrfs_disk_key_objectid(&block->disk_key),
block->disk_key.type,
- (unsigned long long)
- le64_to_cpu(block->disk_key.offset),
- (unsigned long long)
- le64_to_cpu(((struct btrfs_header *)
- mapped_data)->generation),
- (unsigned long long)
+ btrfs_disk_key_offset(&block->disk_key),
+ btrfs_stack_header_generation(
+ (struct btrfs_header *) mapped_datav[0]),
state->max_superblock_generation);
btrfsic_dump_tree(state);
}
@@ -1758,18 +1969,15 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
printk(KERN_INFO "btrfs: attempt to overwrite %c-block"
" @%llu (%s/%llu/%d), oldgen=%llu, newgen=%llu,"
" which is not yet iodone!\n",
- btrfsic_get_block_type(state, block),
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr,
- block->mirror_num,
- (unsigned long long)block->generation,
- (unsigned long long)
- le64_to_cpu(((struct btrfs_header *)
- mapped_data)->generation));
+ btrfsic_get_block_type(state, block), bytenr,
+ dev_state->name, dev_bytenr, block->mirror_num,
+ block->generation,
+ btrfs_stack_header_generation(
+ (struct btrfs_header *)
+ mapped_datav[0]));
/* it would not be safe to go on */
btrfsic_dump_tree(state);
- return;
+ goto continue_loop;
}
/*
@@ -1797,18 +2005,19 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
}
if (block->is_superblock)
- ret = btrfsic_map_superblock(state, bytenr, len,
+ ret = btrfsic_map_superblock(state, bytenr,
+ processed_len,
bdev, &block_ctx);
else
- ret = btrfsic_map_block(state, bytenr, len,
+ ret = btrfsic_map_block(state, bytenr, processed_len,
&block_ctx, 0);
if (ret) {
printk(KERN_INFO
"btrfsic: btrfsic_map_block(root @%llu)"
- " failed!\n", (unsigned long long)bytenr);
- return;
+ " failed!\n", bytenr);
+ goto continue_loop;
}
- block_ctx.data = mapped_data;
+ block_ctx.datav = mapped_datav;
/* the following is required in case of writes to mirrors,
* use the same that was used for the lookup */
block_ctx.dev = dev_state;
@@ -1864,11 +2073,13 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
block->logical_bytenr = bytenr;
block->is_metadata = 1;
if (block->is_superblock) {
+ BUG_ON(PAGE_CACHE_SIZE !=
+ BTRFS_SUPER_INFO_SIZE);
ret = btrfsic_process_written_superblock(
state,
block,
(struct btrfs_super_block *)
- mapped_data);
+ mapped_datav[0]);
if (state->print_mask &
BTRFSIC_PRINT_MASK_TREE_AFTER_SB_WRITE) {
printk(KERN_INFO
@@ -1881,15 +2092,13 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
state,
block,
&block_ctx,
- (struct btrfs_header *)
- block_ctx.data,
0, 0);
}
if (ret)
printk(KERN_INFO
"btrfsic: btrfsic_process_metablock"
"(root @%llu) failed!\n",
- (unsigned long long)dev_bytenr);
+ dev_bytenr);
} else {
block->is_metadata = 0;
block->mirror_num = 0; /* unknown */
@@ -1913,45 +2122,47 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
u64 bytenr;
if (!is_metadata) {
+ processed_len = state->datablock_size;
if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO "Written block (%s/%llu/?)"
" !found in hash table, D.\n",
- dev_state->name,
- (unsigned long long)dev_bytenr);
- if (!state->include_extent_data)
- return; /* ignore that written D block */
+ dev_state->name, dev_bytenr);
+ if (!state->include_extent_data) {
+ /* ignore that written D block */
+ goto continue_loop;
+ }
/* this is getting ugly for the
* include_extent_data case... */
bytenr = 0; /* unknown */
block_ctx.start = bytenr;
- block_ctx.len = len;
- block_ctx.bh = NULL;
+ block_ctx.len = processed_len;
+ block_ctx.mem_to_free = NULL;
+ block_ctx.pagev = NULL;
} else {
- bytenr = le64_to_cpu(((struct btrfs_header *)
- mapped_data)->bytenr);
+ processed_len = state->metablock_size;
+ bytenr = btrfs_stack_header_bytenr(
+ (struct btrfs_header *)
+ mapped_datav[0]);
btrfsic_cmp_log_and_dev_bytenr(state, bytenr, dev_state,
- dev_bytenr,
- mapped_data);
+ dev_bytenr);
if (state->print_mask & BTRFSIC_PRINT_MASK_VERBOSE)
printk(KERN_INFO
"Written block @%llu (%s/%llu/?)"
" !found in hash table, M.\n",
- (unsigned long long)bytenr,
- dev_state->name,
- (unsigned long long)dev_bytenr);
+ bytenr, dev_state->name, dev_bytenr);
- ret = btrfsic_map_block(state, bytenr, len, &block_ctx,
- 0);
+ ret = btrfsic_map_block(state, bytenr, processed_len,
+ &block_ctx, 0);
if (ret) {
printk(KERN_INFO
"btrfsic: btrfsic_map_block(root @%llu)"
" failed!\n",
- (unsigned long long)dev_bytenr);
- return;
+ dev_bytenr);
+ goto continue_loop;
}
}
- block_ctx.data = mapped_data;
+ block_ctx.datav = mapped_datav;
/* the following is required in case of writes to mirrors,
* use the same that was used for the lookup */
block_ctx.dev = dev_state;
@@ -1961,7 +2172,7 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
if (NULL == block) {
printk(KERN_INFO "btrfsic: error, kmalloc failed!\n");
btrfsic_release_block_ctx(&block_ctx);
- return;
+ goto continue_loop;
}
block->dev_state = dev_state;
block->dev_bytenr = dev_bytenr;
@@ -2012,26 +2223,29 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
printk(KERN_INFO
"New written %c-block @%llu (%s/%llu/%d)\n",
is_metadata ? 'M' : 'D',
- (unsigned long long)block->logical_bytenr,
- block->dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num);
+ block->logical_bytenr, block->dev_state->name,
+ block->dev_bytenr, block->mirror_num);
list_add(&block->all_blocks_node, &state->all_blocks_list);
btrfsic_block_hashtable_add(block, &state->block_hashtable);
if (is_metadata) {
ret = btrfsic_process_metablock(state, block,
- &block_ctx,
- (struct btrfs_header *)
- block_ctx.data, 0, 0);
+ &block_ctx, 0, 0);
if (ret)
printk(KERN_INFO
"btrfsic: process_metablock(root @%llu)"
" failed!\n",
- (unsigned long long)dev_bytenr);
+ dev_bytenr);
}
btrfsic_release_block_ctx(&block_ctx);
}
+
+continue_loop:
+ BUG_ON(!processed_len);
+ dev_bytenr += processed_len;
+ mapped_datav += processed_len >> PAGE_CACHE_SHIFT;
+ num_pages -= processed_len >> PAGE_CACHE_SHIFT;
+ goto again;
}
static void btrfsic_bio_end_io(struct bio *bp, int bio_error_status)
@@ -2059,10 +2273,8 @@ static void btrfsic_bio_end_io(struct bio *bp, int bio_error_status)
"bio_end_io(err=%d) for %c @%llu (%s/%llu/%d)\n",
bio_error_status,
btrfsic_get_block_type(dev_state->state, block),
- (unsigned long long)block->logical_bytenr,
- dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num);
+ block->logical_bytenr, dev_state->name,
+ block->dev_bytenr, block->mirror_num);
next_block = block->next_in_same_bio;
block->iodone_w_error = iodone_w_error;
if (block->submit_bio_bh_rw & REQ_FLUSH) {
@@ -2072,7 +2284,6 @@ static void btrfsic_bio_end_io(struct bio *bp, int bio_error_status)
printk(KERN_INFO
"bio_end_io() new %s flush_gen=%llu\n",
dev_state->name,
- (unsigned long long)
dev_state->last_flush_gen);
}
if (block->submit_bio_bh_rw & REQ_FUA)
@@ -2098,10 +2309,8 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
"bh_end_io(error=%d) for %c @%llu (%s/%llu/%d)\n",
iodone_w_error,
btrfsic_get_block_type(dev_state->state, block),
- (unsigned long long)block->logical_bytenr,
- block->dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num);
+ block->logical_bytenr, block->dev_state->name,
+ block->dev_bytenr, block->mirror_num);
block->iodone_w_error = iodone_w_error;
if (block->submit_bio_bh_rw & REQ_FLUSH) {
@@ -2110,8 +2319,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int uptodate)
BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
printk(KERN_INFO
"bh_end_io() new %s flush_gen=%llu\n",
- dev_state->name,
- (unsigned long long)dev_state->last_flush_gen);
+ dev_state->name, dev_state->last_flush_gen);
}
if (block->submit_bio_bh_rw & REQ_FUA)
block->flush_gen = 0; /* FUA completed means block is on disk */
@@ -2136,26 +2344,20 @@ static int btrfsic_process_written_superblock(
printk(KERN_INFO
"btrfsic: superblock @%llu (%s/%llu/%d)"
" with old gen %llu <= %llu\n",
- (unsigned long long)superblock->logical_bytenr,
+ superblock->logical_bytenr,
superblock->dev_state->name,
- (unsigned long long)superblock->dev_bytenr,
- superblock->mirror_num,
- (unsigned long long)
+ superblock->dev_bytenr, superblock->mirror_num,
btrfs_super_generation(super_hdr),
- (unsigned long long)
state->max_superblock_generation);
} else {
if (state->print_mask & BTRFSIC_PRINT_MASK_SUPERBLOCK_WRITE)
printk(KERN_INFO
"btrfsic: got new superblock @%llu (%s/%llu/%d)"
" with new gen %llu > %llu\n",
- (unsigned long long)superblock->logical_bytenr,
+ superblock->logical_bytenr,
superblock->dev_state->name,
- (unsigned long long)superblock->dev_bytenr,
- superblock->mirror_num,
- (unsigned long long)
+ superblock->dev_bytenr, superblock->mirror_num,
btrfs_super_generation(super_hdr),
- (unsigned long long)
state->max_superblock_generation);
state->max_superblock_generation =
@@ -2172,52 +2374,50 @@ static int btrfsic_process_written_superblock(
int num_copies;
int mirror_num;
const char *additional_string = NULL;
- struct btrfs_disk_key tmp_disk_key;
+ struct btrfs_disk_key tmp_disk_key = {0};
- tmp_disk_key.type = BTRFS_ROOT_ITEM_KEY;
- tmp_disk_key.offset = 0;
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_ROOT_ITEM_KEY);
+ btrfs_set_disk_key_objectid(&tmp_disk_key, 0);
switch (pass) {
case 0:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_ROOT_TREE_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_ROOT_TREE_OBJECTID);
additional_string = "root ";
next_bytenr = btrfs_super_root(super_hdr);
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "root@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "root@%llu\n", next_bytenr);
break;
case 1:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_CHUNK_TREE_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_CHUNK_TREE_OBJECTID);
additional_string = "chunk ";
next_bytenr = btrfs_super_chunk_root(super_hdr);
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "chunk@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "chunk@%llu\n", next_bytenr);
break;
case 2:
- tmp_disk_key.objectid =
- cpu_to_le64(BTRFS_TREE_LOG_OBJECTID);
+ btrfs_set_disk_key_objectid(&tmp_disk_key,
+ BTRFS_TREE_LOG_OBJECTID);
additional_string = "log ";
next_bytenr = btrfs_super_log_root(super_hdr);
if (0 == next_bytenr)
continue;
if (state->print_mask &
BTRFSIC_PRINT_MASK_ROOT_CHUNK_LOG_TREE_LOCATION)
- printk(KERN_INFO "log@%llu\n",
- (unsigned long long)next_bytenr);
+ printk(KERN_INFO "log@%llu\n", next_bytenr);
break;
}
num_copies =
- btrfs_num_copies(&state->root->fs_info->mapping_tree,
- next_bytenr, PAGE_SIZE);
+ btrfs_num_copies(state->root->fs_info,
+ next_bytenr, BTRFS_SUPER_INFO_SIZE);
if (state->print_mask & BTRFSIC_PRINT_MASK_NUM_COPIES)
printk(KERN_INFO "num_copies(log_bytenr=%llu) = %d\n",
- (unsigned long long)next_bytenr, num_copies);
+ next_bytenr, num_copies);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
int was_created;
@@ -2225,15 +2425,15 @@ static int btrfsic_process_written_superblock(
printk(KERN_INFO
"btrfsic_process_written_superblock("
"mirror_num=%d)\n", mirror_num);
- ret = btrfsic_map_block(state, next_bytenr, PAGE_SIZE,
+ ret = btrfsic_map_block(state, next_bytenr,
+ BTRFS_SUPER_INFO_SIZE,
&tmp_next_block_ctx,
mirror_num);
if (ret) {
printk(KERN_INFO
"btrfsic: btrfsic_map_block(@%llu,"
" mirror=%d) failed!\n",
- (unsigned long long)next_bytenr,
- mirror_num);
+ next_bytenr, mirror_num);
return -1;
}
@@ -2267,10 +2467,8 @@ static int btrfsic_process_written_superblock(
}
}
- if (-1 == btrfsic_check_all_ref_blocks(state, superblock, 0)) {
- WARN_ON(1);
+ if (WARN_ON(-1 == btrfsic_check_all_ref_blocks(state, superblock, 0)))
btrfsic_dump_tree(state);
- }
return 0;
}
@@ -2318,26 +2516,22 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
" %u* refers to %c @%llu (%s/%llu/%d)\n",
recursion_level,
btrfsic_get_block_type(state, block),
- (unsigned long long)block->logical_bytenr,
- block->dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num,
+ block->logical_bytenr, block->dev_state->name,
+ block->dev_bytenr, block->mirror_num,
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
if (l->block_ref_to->never_written) {
printk(KERN_INFO "btrfs: attempt to write superblock"
" which references block %c @%llu (%s/%llu/%d)"
" which is never written!\n",
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
ret = -1;
} else if (!l->block_ref_to->is_iodone) {
@@ -2345,10 +2539,19 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
" which references block %c @%llu (%s/%llu/%d)"
" which is not yet iodone!\n",
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->dev_bytenr,
+ l->block_ref_to->mirror_num);
+ ret = -1;
+ } else if (l->block_ref_to->iodone_w_error) {
+ printk(KERN_INFO "btrfs: attempt to write superblock"
+ " which references block %c @%llu (%s/%llu/%d)"
+ " which has write error!\n",
+ btrfsic_get_block_type(state, l->block_ref_to),
+ l->block_ref_to->logical_bytenr,
+ l->block_ref_to->dev_state->name,
+ l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
ret = -1;
} else if (l->parent_generation !=
@@ -2362,13 +2565,12 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
" with generation %llu !="
" parent generation %llu!\n",
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num,
- (unsigned long long)l->block_ref_to->generation,
- (unsigned long long)l->parent_generation);
+ l->block_ref_to->generation,
+ l->parent_generation);
ret = -1;
} else if (l->block_ref_to->flush_gen >
l->block_ref_to->dev_state->last_flush_gen) {
@@ -2378,13 +2580,10 @@ static int btrfsic_check_all_ref_blocks(struct btrfsic_state *state,
" (block flush_gen=%llu,"
" dev->flush_gen=%llu)!\n",
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)
l->block_ref_to->logical_bytenr,
l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
- l->block_ref_to->mirror_num,
- (unsigned long long)block->flush_gen,
- (unsigned long long)
+ l->block_ref_to->dev_bytenr,
+ l->block_ref_to->mirror_num, block->flush_gen,
l->block_ref_to->dev_state->last_flush_gen);
ret = -1;
} else if (-1 == btrfsic_check_all_ref_blocks(state,
@@ -2429,16 +2628,12 @@ static int btrfsic_is_block_ref_by_superblock(
" is ref %u* from %c @%llu (%s/%llu/%d)\n",
recursion_level,
btrfsic_get_block_type(state, block),
- (unsigned long long)block->logical_bytenr,
- block->dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num,
+ block->logical_bytenr, block->dev_state->name,
+ block->dev_bytenr, block->mirror_num,
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_from),
- (unsigned long long)
l->block_ref_from->logical_bytenr,
l->block_ref_from->dev_state->name,
- (unsigned long long)
l->block_ref_from->dev_bytenr,
l->block_ref_from->mirror_num);
if (l->block_ref_from->is_superblock &&
@@ -2465,14 +2660,12 @@ static void btrfsic_print_add_link(const struct btrfsic_state *state,
" to %c @%llu (%s/%llu/%d).\n",
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_from),
- (unsigned long long)l->block_ref_from->logical_bytenr,
+ l->block_ref_from->logical_bytenr,
l->block_ref_from->dev_state->name,
- (unsigned long long)l->block_ref_from->dev_bytenr,
- l->block_ref_from->mirror_num,
+ l->block_ref_from->dev_bytenr, l->block_ref_from->mirror_num,
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)l->block_ref_to->logical_bytenr,
- l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->logical_bytenr,
+ l->block_ref_to->dev_state->name, l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
}
@@ -2484,14 +2677,12 @@ static void btrfsic_print_rem_link(const struct btrfsic_state *state,
" to %c @%llu (%s/%llu/%d).\n",
l->ref_cnt,
btrfsic_get_block_type(state, l->block_ref_from),
- (unsigned long long)l->block_ref_from->logical_bytenr,
+ l->block_ref_from->logical_bytenr,
l->block_ref_from->dev_state->name,
- (unsigned long long)l->block_ref_from->dev_bytenr,
- l->block_ref_from->mirror_num,
+ l->block_ref_from->dev_bytenr, l->block_ref_from->mirror_num,
btrfsic_get_block_type(state, l->block_ref_to),
- (unsigned long long)l->block_ref_to->logical_bytenr,
- l->block_ref_to->dev_state->name,
- (unsigned long long)l->block_ref_to->dev_bytenr,
+ l->block_ref_to->logical_bytenr,
+ l->block_ref_to->dev_state->name, l->block_ref_to->dev_bytenr,
l->block_ref_to->mirror_num);
}
@@ -2535,10 +2726,8 @@ static void btrfsic_dump_tree_sub(const struct btrfsic_state *state,
*/
indent_add = sprintf(buf, "%c-%llu(%s/%llu/%d)",
btrfsic_get_block_type(state, block),
- (unsigned long long)block->logical_bytenr,
- block->dev_state->name,
- (unsigned long long)block->dev_bytenr,
- block->mirror_num);
+ block->logical_bytenr, block->dev_state->name,
+ block->dev_bytenr, block->mirror_num);
if (indent_level + indent_add > BTRFSIC_TREE_DUMP_MAX_INDENT_LEVEL) {
printk("[...]\n");
return;
@@ -2671,10 +2860,8 @@ static struct btrfsic_block *btrfsic_block_lookup_or_add(
"New %s%c-block @%llu (%s/%llu/%d)\n",
additional_string,
btrfsic_get_block_type(state, block),
- (unsigned long long)block->logical_bytenr,
- dev_state->name,
- (unsigned long long)block->dev_bytenr,
- mirror_num);
+ block->logical_bytenr, dev_state->name,
+ block->dev_bytenr, mirror_num);
list_add(&block->all_blocks_node, &state->all_blocks_list);
btrfsic_block_hashtable_add(block, &state->block_hashtable);
if (NULL != was_created)
@@ -2690,7 +2877,7 @@ static struct btrfsic_block *btrfsic_block_lookup_or_add(
static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
u64 bytenr,
struct btrfsic_dev_state *dev_state,
- u64 dev_bytenr, char *data)
+ u64 dev_bytenr)
{
int num_copies;
int mirror_num;
@@ -2698,17 +2885,17 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
struct btrfsic_block_data_ctx block_ctx;
int match = 0;
- num_copies = btrfs_num_copies(&state->root->fs_info->mapping_tree,
- bytenr, PAGE_SIZE);
+ num_copies = btrfs_num_copies(state->root->fs_info,
+ bytenr, state->metablock_size);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
- ret = btrfsic_map_block(state, bytenr, PAGE_SIZE,
+ ret = btrfsic_map_block(state, bytenr, state->metablock_size,
&block_ctx, mirror_num);
if (ret) {
printk(KERN_INFO "btrfsic:"
" btrfsic_map_block(logical @%llu,"
" mirror %d) failed!\n",
- (unsigned long long)bytenr, mirror_num);
+ bytenr, mirror_num);
continue;
}
@@ -2721,26 +2908,23 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state,
btrfsic_release_block_ctx(&block_ctx);
}
- if (!match) {
+ if (WARN_ON(!match)) {
printk(KERN_INFO "btrfs: attempt to write M-block which contains logical bytenr that doesn't map to dev+physical bytenr of submit_bio,"
" buffer->log_bytenr=%llu, submit_bio(bdev=%s,"
" phys_bytenr=%llu)!\n",
- (unsigned long long)bytenr, dev_state->name,
- (unsigned long long)dev_bytenr);
+ bytenr, dev_state->name, dev_bytenr);
for (mirror_num = 1; mirror_num <= num_copies; mirror_num++) {
- ret = btrfsic_map_block(state, bytenr, PAGE_SIZE,
+ ret = btrfsic_map_block(state, bytenr,
+ state->metablock_size,
&block_ctx, mirror_num);
if (ret)
continue;
printk(KERN_INFO "Read logical bytenr @%llu maps to"
" (%s/%llu/%d)\n",
- (unsigned long long)bytenr,
- block_ctx.dev->name,
- (unsigned long long)block_ctx.dev_bytenr,
- mirror_num);
+ bytenr, block_ctx.dev->name,
+ block_ctx.dev_bytenr, mirror_num);
}
- WARN_ON(1);
}
}
@@ -2775,20 +2959,18 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bh(rw=0x%x, blocknr=%lu (bytenr %llu),"
- " size=%lu, data=%p, bdev=%p)\n",
- rw, (unsigned long)bh->b_blocknr,
- (unsigned long long)dev_bytenr,
- (unsigned long)bh->b_size, bh->b_data,
- bh->b_bdev);
+ "submit_bh(rw=0x%x, blocknr=%llu (bytenr %llu),"
+ " size=%zu, data=%p, bdev=%p)\n",
+ rw, (unsigned long long)bh->b_blocknr,
+ dev_bytenr, bh->b_size, bh->b_data, bh->b_bdev);
btrfsic_process_written_block(dev_state, dev_bytenr,
- bh->b_data, bh->b_size, NULL,
+ &bh->b_data, 1, NULL,
NULL, bh, rw);
} else if (NULL != dev_state && (rw & REQ_FLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bh(rw=0x%x) FLUSH, bdev=%p)\n",
+ "submit_bh(rw=0x%x FLUSH, bdev=%p)\n",
rw, bh->b_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
@@ -2819,14 +3001,12 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
return submit_bh(rw, bh);
}
-void btrfsic_submit_bio(int rw, struct bio *bio)
+static void __btrfsic_submit_bio(int rw, struct bio *bio)
{
struct btrfsic_dev_state *dev_state;
- if (!btrfsic_is_initialized) {
- submit_bio(rw, bio);
+ if (!btrfsic_is_initialized)
return;
- }
mutex_lock(&btrfsic_mutex);
/* since btrfsic_submit_bio() is also called before
@@ -2836,48 +3016,59 @@ void btrfsic_submit_bio(int rw, struct bio *bio)
(rw & WRITE) && NULL != bio->bi_io_vec) {
unsigned int i;
u64 dev_bytenr;
+ u64 cur_bytenr;
int bio_is_patched;
+ char **mapped_datav;
- dev_bytenr = 512 * bio->bi_sector;
+ dev_bytenr = 512 * bio->bi_iter.bi_sector;
bio_is_patched = 0;
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
"submit_bio(rw=0x%x, bi_vcnt=%u,"
- " bi_sector=%lu (bytenr %llu), bi_bdev=%p)\n",
- rw, bio->bi_vcnt, (unsigned long)bio->bi_sector,
- (unsigned long long)dev_bytenr,
- bio->bi_bdev);
-
+ " bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
+ rw, bio->bi_vcnt,
+ (unsigned long long)bio->bi_iter.bi_sector,
+ dev_bytenr, bio->bi_bdev);
+
+ mapped_datav = kmalloc(sizeof(*mapped_datav) * bio->bi_vcnt,
+ GFP_NOFS);
+ if (!mapped_datav)
+ goto leave;
+ cur_bytenr = dev_bytenr;
for (i = 0; i < bio->bi_vcnt; i++) {
- u8 *mapped_data;
-
- mapped_data = kmap(bio->bi_io_vec[i].bv_page);
- if ((BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
- BTRFSIC_PRINT_MASK_VERBOSE) ==
- (dev_state->state->print_mask &
- (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
- BTRFSIC_PRINT_MASK_VERBOSE)))
+ BUG_ON(bio->bi_io_vec[i].bv_len != PAGE_CACHE_SIZE);
+ mapped_datav[i] = kmap(bio->bi_io_vec[i].bv_page);
+ if (!mapped_datav[i]) {
+ while (i > 0) {
+ i--;
+ kunmap(bio->bi_io_vec[i].bv_page);
+ }
+ kfree(mapped_datav);
+ goto leave;
+ }
+ if (dev_state->state->print_mask &
+ BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH_VERBOSE)
printk(KERN_INFO
- "#%u: page=%p, mapped=%p, len=%u,"
- " offset=%u\n",
- i, bio->bi_io_vec[i].bv_page,
- mapped_data,
- bio->bi_io_vec[i].bv_len,
+ "#%u: bytenr=%llu, len=%u, offset=%u\n",
+ i, cur_bytenr, bio->bi_io_vec[i].bv_len,
bio->bi_io_vec[i].bv_offset);
- btrfsic_process_written_block(dev_state, dev_bytenr,
- mapped_data,
- bio->bi_io_vec[i].bv_len,
- bio, &bio_is_patched,
- NULL, rw);
+ cur_bytenr += bio->bi_io_vec[i].bv_len;
+ }
+ btrfsic_process_written_block(dev_state, dev_bytenr,
+ mapped_datav, bio->bi_vcnt,
+ bio, &bio_is_patched,
+ NULL, rw);
+ while (i > 0) {
+ i--;
kunmap(bio->bi_io_vec[i].bv_page);
- dev_bytenr += bio->bi_io_vec[i].bv_len;
}
+ kfree(mapped_datav);
} else if (NULL != dev_state && (rw & REQ_FLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=0x%x) FLUSH, bdev=%p)\n",
+ "submit_bio(rw=0x%x FLUSH, bdev=%p)\n",
rw, bio->bi_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
@@ -2904,11 +3095,22 @@ void btrfsic_submit_bio(int rw, struct bio *bio)
bio->bi_end_io = btrfsic_bio_end_io;
}
}
+leave:
mutex_unlock(&btrfsic_mutex);
+}
+void btrfsic_submit_bio(int rw, struct bio *bio)
+{
+ __btrfsic_submit_bio(rw, bio);
submit_bio(rw, bio);
}
+int btrfsic_submit_bio_wait(int rw, struct bio *bio)
+{
+ __btrfsic_submit_bio(rw, bio);
+ return submit_bio_wait(rw, bio);
+}
+
int btrfsic_mount(struct btrfs_root *root,
struct btrfs_fs_devices *fs_devices,
int including_extent_data, u32 print_mask)
@@ -2918,6 +3120,30 @@ int btrfsic_mount(struct btrfs_root *root,
struct list_head *dev_head = &fs_devices->devices;
struct btrfs_device *device;
+ if (root->nodesize != root->leafsize) {
+ printk(KERN_INFO
+ "btrfsic: cannot handle nodesize %d != leafsize %d!\n",
+ root->nodesize, root->leafsize);
+ return -1;
+ }
+ if (root->nodesize & ((u64)PAGE_CACHE_SIZE - 1)) {
+ printk(KERN_INFO
+ "btrfsic: cannot handle nodesize %d not being a multiple of PAGE_CACHE_SIZE %ld!\n",
+ root->nodesize, PAGE_CACHE_SIZE);
+ return -1;
+ }
+ if (root->leafsize & ((u64)PAGE_CACHE_SIZE - 1)) {
+ printk(KERN_INFO
+ "btrfsic: cannot handle leafsize %d not being a multiple of PAGE_CACHE_SIZE %ld!\n",
+ root->leafsize, PAGE_CACHE_SIZE);
+ return -1;
+ }
+ if (root->sectorsize & ((u64)PAGE_CACHE_SIZE - 1)) {
+ printk(KERN_INFO
+ "btrfsic: cannot handle sectorsize %d not being a multiple of PAGE_CACHE_SIZE %ld!\n",
+ root->sectorsize, PAGE_CACHE_SIZE);
+ return -1;
+ }
state = kzalloc(sizeof(*state), GFP_NOFS);
if (NULL == state) {
printk(KERN_INFO "btrfs check-integrity: kmalloc() failed!\n");
@@ -2934,6 +3160,8 @@ int btrfsic_mount(struct btrfs_root *root,
state->print_mask = print_mask;
state->include_extent_data = including_extent_data;
state->csum_size = 0;
+ state->metablock_size = root->nodesize;
+ state->datablock_size = root->sectorsize;
INIT_LIST_HEAD(&state->all_blocks_list);
btrfsic_block_hashtable_init(&state->block_hashtable);
btrfsic_block_link_hashtable_init(&state->block_link_hashtable);
@@ -3050,17 +3278,15 @@ void btrfsic_unmount(struct btrfs_root *root,
btrfsic_block_link_free(l);
}
- if (b_all->is_iodone)
+ if (b_all->is_iodone || b_all->never_written)
btrfsic_block_free(b_all);
else
printk(KERN_INFO "btrfs: attempt to free %c-block"
" @%llu (%s/%llu/%d) on umount which is"
" not yet iodone!\n",
btrfsic_get_block_type(state, b_all),
- (unsigned long long)b_all->logical_bytenr,
- b_all->dev_state->name,
- (unsigned long long)b_all->dev_bytenr,
- b_all->mirror_num);
+ b_all->logical_bytenr, b_all->dev_state->name,
+ b_all->dev_bytenr, b_all->mirror_num);
}
mutex_unlock(&btrfsic_mutex);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 22:43:37 +0000