strutc io_failure_record and the io_failure_tree tree are unused now,
so remove them.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/btrfs/btrfs_inode.h | 7 -
fs/btrfs/extent-io-tree.h | 1 -
fs/btrfs/extent_io.c | 260 --------------------------------------
fs/btrfs/extent_io.h | 31 -----
fs/btrfs/inode.c | 16 ---
5 files changed, 315 deletions(-)
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 99430d0ebbb5fd..78c7979b8dcac7 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -93,12 +93,6 @@ struct btrfs_inode {
/* the io_tree does range state (DIRTY, LOCKED etc) */
struct extent_io_tree io_tree;
- /* special utility tree used to record which mirrors have already been
- * tried when checksums fail for a given block
- */
- struct rb_root io_failure_tree;
- spinlock_t io_failure_lock;
-
/*
* Keep track of where the inode has extent items mapped in order to
* make sure the i_size adjustments are accurate
@@ -414,7 +408,6 @@ static inline void btrfs_inode_split_flags(u64 inode_item_flags,
void btrfs_submit_data_write_bio(struct btrfs_inode *inode, struct bio *bio, int mirror_num);
void btrfs_submit_data_read_bio(struct btrfs_inode *inode, struct bio *bio,
int mirror_num, enum btrfs_compression_type compress_type);
-void btrfs_submit_dio_repair_bio(struct btrfs_inode *inode, struct bio *bio, int mirror_num);
blk_status_t btrfs_submit_bio_start(struct btrfs_inode *inode, struct bio *bio);
blk_status_t btrfs_submit_bio_start_direct_io(struct btrfs_inode *inode,
struct bio *bio,
diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h
index e3eeec380844c7..21766e49ec02e7 100644
--- a/fs/btrfs/extent-io-tree.h
+++ b/fs/btrfs/extent-io-tree.h
@@ -6,7 +6,6 @@
#include "misc.h"
struct extent_changeset;
-struct io_failure_record;
/* Bits for the extent state */
enum {
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 81f44b6c9fad50..75b717a7b0f97d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -515,266 +515,6 @@ void extent_clear_unlock_delalloc(struct btrfs_inode *inode, u64 start, u64 end,
start, end, page_ops, NULL);
}
-static int insert_failrec(struct btrfs_inode *inode,
- struct io_failure_record *failrec)
-{
- struct rb_node *exist;
-
- spin_lock(&inode->io_failure_lock);
- exist = rb_simple_insert(&inode->io_failure_tree, failrec->bytenr,
- &failrec->rb_node);
- spin_unlock(&inode->io_failure_lock);
-
- return (exist == NULL) ? 0 : -EEXIST;
-}
-
-static struct io_failure_record *get_failrec(struct btrfs_inode *inode, u64 start)
-{
- struct rb_node *node;
- struct io_failure_record *failrec = ERR_PTR(-ENOENT);
-
- spin_lock(&inode->io_failure_lock);
- node = rb_simple_search(&inode->io_failure_tree, start);
- if (node)
- failrec = rb_entry(node, struct io_failure_record, rb_node);
- spin_unlock(&inode->io_failure_lock);
- return failrec;
-}
-
-static void free_io_failure(struct btrfs_inode *inode,
- struct io_failure_record *rec)
-{
- spin_lock(&inode->io_failure_lock);
- rb_erase(&rec->rb_node, &inode->io_failure_tree);
- spin_unlock(&inode->io_failure_lock);
-
- kfree(rec);
-}
-
-static int next_mirror(const struct io_failure_record *failrec, int cur_mirror)
-{
- if (cur_mirror == failrec->num_copies)
- return cur_mirror + 1 - failrec->num_copies;
- return cur_mirror + 1;
-}
-
-static int prev_mirror(const struct io_failure_record *failrec, int cur_mirror)
-{
- if (cur_mirror == 1)
- return failrec->num_copies;
- return cur_mirror - 1;
-}
-
-/*
- * each time an IO finishes, we do a fast check in the IO failure tree
- * to see if we need to process or clean up an io_failure_record
- */
-int btrfs_clean_io_failure(struct btrfs_inode *inode, u64 start,
- struct page *page, unsigned int pg_offset)
-{
- struct btrfs_fs_info *fs_info = inode->root->fs_info;
- struct extent_io_tree *io_tree = &inode->io_tree;
- u64 ino = btrfs_ino(inode);
- u64 locked_start, locked_end;
- struct io_failure_record *failrec;
- int mirror;
- int ret;
-
- failrec = get_failrec(inode, start);
- if (IS_ERR(failrec))
- return 0;
-
- BUG_ON(!failrec->this_mirror);
-
- if (sb_rdonly(fs_info->sb))
- goto out;
-
- ret = find_first_extent_bit(io_tree, failrec->bytenr, &locked_start,
- &locked_end, EXTENT_LOCKED, NULL);
- if (ret || locked_start > failrec->bytenr ||
- locked_end < failrec->bytenr + failrec->len - 1)
- goto out;
-
- mirror = failrec->this_mirror;
- do {
- mirror = prev_mirror(failrec, mirror);
- btrfs_repair_io_failure(fs_info, ino, start, failrec->len,
- failrec->logical, page, pg_offset, mirror);
- } while (mirror != failrec->failed_mirror);
-
-out:
- free_io_failure(inode, failrec);
- return 0;
-}
-
-/*
- * Can be called when
- * - hold extent lock
- * - under ordered extent
- * - the inode is freeing
- */
-void btrfs_free_io_failure_record(struct btrfs_inode *inode, u64 start, u64 end)
-{
- struct io_failure_record *failrec;
- struct rb_node *node, *next;
-
- if (RB_EMPTY_ROOT(&inode->io_failure_tree))
- return;
-
- spin_lock(&inode->io_failure_lock);
- node = rb_simple_search_first(&inode->io_failure_tree, start);
- while (node) {
- failrec = rb_entry(node, struct io_failure_record, rb_node);
- if (failrec->bytenr > end)
- break;
-
- next = rb_next(node);
- rb_erase(&failrec->rb_node, &inode->io_failure_tree);
- kfree(failrec);
-
- node = next;
- }
- spin_unlock(&inode->io_failure_lock);
-}
-
-static struct io_failure_record *btrfs_get_io_failure_record(struct inode *inode,
- struct btrfs_bio *bbio,
- unsigned int bio_offset)
-{
- struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
- u64 start = bbio->file_offset + bio_offset;
- struct io_failure_record *failrec;
- const u32 sectorsize = fs_info->sectorsize;
- int ret;
-
- failrec = get_failrec(BTRFS_I(inode), start);
- if (!IS_ERR(failrec)) {
- btrfs_debug(fs_info,
- "Get IO Failure Record: (found) logical=%llu, start=%llu, len=%llu",
- failrec->logical, failrec->bytenr, failrec->len);
- /*
- * when data can be on disk more than twice, add to failrec here
- * (e.g. with a list for failed_mirror) to make
- * clean_io_failure() clean all those errors at once.
- */
- ASSERT(failrec->this_mirror == bbio->mirror_num);
- ASSERT(failrec->len == fs_info->sectorsize);
- return failrec;
- }
-
- failrec = kzalloc(sizeof(*failrec), GFP_NOFS);
- if (!failrec)
- return ERR_PTR(-ENOMEM);
-
- RB_CLEAR_NODE(&failrec->rb_node);
- failrec->bytenr = start;
- failrec->len = sectorsize;
- failrec->failed_mirror = bbio->mirror_num;
- failrec->this_mirror = bbio->mirror_num;
- failrec->logical = (bbio->iter.bi_sector << SECTOR_SHIFT) + bio_offset;
-
- btrfs_debug(fs_info,
- "new io failure record logical %llu start %llu",
- failrec->logical, start);
-
- failrec->num_copies = btrfs_num_copies(fs_info, failrec->logical, sectorsize);
- if (failrec->num_copies == 1) {
- /*
- * We only have a single copy of the data, so don't bother with
- * all the retry and error correction code that follows. No
- * matter what the error is, it is very likely to persist.
- */
- btrfs_debug(fs_info,
- "cannot repair logical %llu num_copies %d",
- failrec->logical, failrec->num_copies);
- kfree(failrec);
- return ERR_PTR(-EIO);
- }
-
- /* Set the bits in the private failure tree */
- ret = insert_failrec(BTRFS_I(inode), failrec);
- if (ret) {
- kfree(failrec);
- return ERR_PTR(ret);
- }
-
- return failrec;
-}
-
-int btrfs_repair_one_sector(struct btrfs_inode *inode, struct btrfs_bio *failed_bbio,
- u32 bio_offset, struct page *page, unsigned int pgoff,
- bool submit_buffered)
-{
- u64 start = failed_bbio->file_offset + bio_offset;
- struct io_failure_record *failrec;
- struct btrfs_fs_info *fs_info = inode->root->fs_info;
- struct bio *failed_bio = &failed_bbio->bio;
- const int icsum = bio_offset >> fs_info->sectorsize_bits;
- struct bio *repair_bio;
- struct btrfs_bio *repair_bbio;
-
- btrfs_debug(fs_info,
- "repair read error: read error at %llu", start);
-
- BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE);
-
- failrec = btrfs_get_io_failure_record(&inode->vfs_inode, failed_bbio, bio_offset);
- if (IS_ERR(failrec))
- return PTR_ERR(failrec);
-
- /*
- * There are two premises:
- * a) deliver good data to the caller
- * b) correct the bad sectors on disk
- *
- * Since we're only doing repair for one sector, we only need to get
- * a good copy of the failed sector and if we succeed, we have setup
- * everything for btrfs_repair_io_failure to do the rest for us.
- */
- failrec->this_mirror = next_mirror(failrec, failrec->this_mirror);
- if (failrec->this_mirror == failrec->failed_mirror) {
- btrfs_debug(fs_info,
- "failed to repair num_copies %d this_mirror %d failed_mirror %d",
- failrec->num_copies, failrec->this_mirror, failrec->failed_mirror);
- free_io_failure(inode, failrec);
- return -EIO;
- }
-
- repair_bio = btrfs_bio_alloc(1, REQ_OP_READ, failed_bbio->inode,
- failed_bbio->end_io,
- failed_bbio->private);
- repair_bbio = btrfs_bio(repair_bio);
- repair_bbio->file_offset = start;
- repair_bio->bi_iter.bi_sector = failrec->logical >> 9;
-
- if (failed_bbio->csum) {
- const u32 csum_size = fs_info->csum_size;
-
- repair_bbio->csum = repair_bbio->csum_inline;
- memcpy(repair_bbio->csum,
- failed_bbio->csum + csum_size * icsum, csum_size);
- }
-
- bio_add_page(repair_bio, page, failrec->len, pgoff);
-
- btrfs_debug(fs_info,
- "repair read error: submitting new read to mirror %d",
- failrec->this_mirror);
-
- /*
- * At this point we have a bio, so any errors from bio submission will
- * be handled by the endio on the repair_bio, so we can't return an
- * error here.
- */
- if (submit_buffered)
- btrfs_submit_data_read_bio(inode, repair_bio,
- failrec->this_mirror, 0);
- else
- btrfs_submit_dio_repair_bio(inode, repair_bio, failrec->this_mirror);
-
- return BLK_STS_OK;
-}
-
static void end_page_read(struct page *page, bool uptodate, u64 start, u32 len)
{
struct btrfs_fs_info *fs_info = btrfs_sb(page->mapping->host->i_sb);
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index a2c82448b2e076..1b311cd6978321 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -60,11 +60,9 @@ enum {
#define BITMAP_LAST_BYTE_MASK(nbits) \
(BYTE_MASK >> (-(nbits) & (BITS_PER_BYTE - 1)))
-struct btrfs_bio;
struct btrfs_root;
struct btrfs_inode;
struct btrfs_fs_info;
-struct io_failure_record;
struct extent_io_tree;
struct btrfs_tree_parent_check;
@@ -279,35 +277,6 @@ int btrfs_alloc_page_array(unsigned int nr_pages, struct page **page_array);
void end_extent_writepage(struct page *page, int err, u64 start, u64 end);
-/*
- * When IO fails, either with EIO or csum verification fails, we
- * try other mirrors that might have a good copy of the data. This
- * io_failure_record is used to record state as we go through all the
- * mirrors. If another mirror has good data, the sector is set up to date
- * and things continue. If a good mirror can't be found, the original
- * bio end_io callback is called to indicate things have failed.
- */
-struct io_failure_record {
- /* Use rb_simple_node for search/insert */
- struct {
- struct rb_node rb_node;
- u64 bytenr;
- };
- struct page *page;
- u64 len;
- u64 logical;
- int this_mirror;
- int failed_mirror;
- int num_copies;
-};
-
-int btrfs_repair_one_sector(struct btrfs_inode *inode, struct btrfs_bio *failed_bbio,
- u32 bio_offset, struct page *page, unsigned int pgoff,
- bool submit_buffered);
-void btrfs_free_io_failure_record(struct btrfs_inode *inode, u64 start, u64 end);
-int btrfs_clean_io_failure(struct btrfs_inode *inode, u64 start,
- struct page *page, unsigned int pg_offset);
-
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
bool find_lock_delalloc_range(struct inode *inode,
struct page *locked_page, u64 *start,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c63160cf135d98..190c5ba92f9320 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3249,8 +3249,6 @@ int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
ordered_extent->disk_num_bytes);
}
- btrfs_free_io_failure_record(inode, start, end);
-
if (test_bit(BTRFS_ORDERED_TRUNCATED, &ordered_extent->flags)) {
truncated = true;
logical_len = ordered_extent->truncated_len;
@@ -5395,8 +5393,6 @@ void btrfs_evict_inode(struct inode *inode)
if (is_bad_inode(inode))
goto no_delete;
- btrfs_free_io_failure_record(BTRFS_I(inode), 0, (u64)-1);
-
if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags))
goto no_delete;
@@ -7839,16 +7835,6 @@ static void btrfs_dio_private_put(struct btrfs_dio_private *dip)
bio_endio(&dip->bio);
}
-void btrfs_submit_dio_repair_bio(struct btrfs_inode *inode, struct bio *bio, int mirror_num)
-{
- struct btrfs_dio_private *dip = btrfs_bio(bio)->private;
-
- BUG_ON(bio_op(bio) == REQ_OP_WRITE);
-
- refcount_inc(&dip->refs);
- btrfs_submit_bio(inode->root->fs_info, bio, mirror_num);
-}
-
blk_status_t btrfs_submit_bio_start_direct_io(struct btrfs_inode *inode,
struct bio *bio,
u64 dio_file_offset)
@@ -8714,7 +8700,6 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
ei->last_log_commit = 0;
spin_lock_init(&ei->lock);
- spin_lock_init(&ei->io_failure_lock);
ei->outstanding_extents = 0;
if (sb->s_magic != BTRFS_TEST_MAGIC)
btrfs_init_metadata_block_rsv(fs_info, &ei->block_rsv,
@@ -8734,7 +8719,6 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
ei->io_tree.inode = ei;
extent_io_tree_init(fs_info, &ei->file_extent_tree,
IO_TREE_INODE_FILE_EXTENT);
- ei->io_failure_tree = RB_ROOT;
atomic_set(&ei->sync_writers, 0);
mutex_init(&ei->log_mutex);
btrfs_ordered_inode_tree_init(&ei->ordered_tree);
--
2.39.0
