diff options
author | Josef Bacik <josef@toxicpanda.com> | 2020-01-17 09:02:24 -0500 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2020-03-23 17:01:24 +0100 |
commit | 3f1c64ce04387773d2b0d8ef6a7e573ff80e4436 (patch) | |
tree | 78cc491d9041f9ef99b0ad1f523a06ba6f14e05f | |
parent | d923afe96d7eabbe868a478bae0997dfecb8a5a3 (diff) |
btrfs: delete the ordered isize update code
Now that we have a safe way to update the isize, remove all of this code
as it's no longer needed.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r-- | fs/btrfs/ordered-data.c | 128 | ||||
-rw-r--r-- | fs/btrfs/ordered-data.h | 7 | ||||
-rw-r--r-- | include/trace/events/btrfs.h | 1 |
3 files changed, 0 insertions, 136 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index a65f189a5b94..66170c8cea6f 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -786,134 +786,6 @@ out: } /* - * After an extent is done, call this to conditionally update the on disk - * i_size. i_size is updated to cover any fully written part of the file. - */ -int btrfs_ordered_update_i_size(struct inode *inode, u64 offset, - struct btrfs_ordered_extent *ordered) -{ - struct btrfs_ordered_inode_tree *tree = &BTRFS_I(inode)->ordered_tree; - u64 disk_i_size; - u64 new_i_size; - u64 i_size = i_size_read(inode); - struct rb_node *node; - struct rb_node *prev = NULL; - struct btrfs_ordered_extent *test; - int ret = 1; - u64 orig_offset = offset; - - spin_lock_irq(&tree->lock); - if (ordered) { - offset = entry_end(ordered); - if (test_bit(BTRFS_ORDERED_TRUNCATED, &ordered->flags)) - offset = min(offset, - ordered->file_offset + - ordered->truncated_len); - } else { - offset = ALIGN(offset, btrfs_inode_sectorsize(inode)); - } - disk_i_size = BTRFS_I(inode)->disk_i_size; - - /* - * truncate file. - * If ordered is not NULL, then this is called from endio and - * disk_i_size will be updated by either truncate itself or any - * in-flight IOs which are inside the disk_i_size. - * - * Because btrfs_setsize() may set i_size with disk_i_size if truncate - * fails somehow, we need to make sure we have a precise disk_i_size by - * updating it as usual. - * - */ - if (!ordered && disk_i_size > i_size) { - BTRFS_I(inode)->disk_i_size = orig_offset; - ret = 0; - goto out; - } - - /* - * if the disk i_size is already at the inode->i_size, or - * this ordered extent is inside the disk i_size, we're done - */ - if (disk_i_size == i_size) - goto out; - - /* - * We still need to update disk_i_size if outstanding_isize is greater - * than disk_i_size. - */ - if (offset <= disk_i_size && - (!ordered || ordered->outstanding_isize <= disk_i_size)) - goto out; - - /* - * walk backward from this ordered extent to disk_i_size. - * if we find an ordered extent then we can't update disk i_size - * yet - */ - if (ordered) { - node = rb_prev(&ordered->rb_node); - } else { - prev = tree_search(tree, offset); - /* - * we insert file extents without involving ordered struct, - * so there should be no ordered struct cover this offset - */ - if (prev) { - test = rb_entry(prev, struct btrfs_ordered_extent, - rb_node); - BUG_ON(offset_in_entry(test, offset)); - } - node = prev; - } - for (; node; node = rb_prev(node)) { - test = rb_entry(node, struct btrfs_ordered_extent, rb_node); - - /* We treat this entry as if it doesn't exist */ - if (test_bit(BTRFS_ORDERED_UPDATED_ISIZE, &test->flags)) - continue; - - if (entry_end(test) <= disk_i_size) - break; - if (test->file_offset >= i_size) - break; - - /* - * We don't update disk_i_size now, so record this undealt - * i_size. Or we will not know the real i_size. - */ - if (test->outstanding_isize < offset) - test->outstanding_isize = offset; - if (ordered && - ordered->outstanding_isize > test->outstanding_isize) - test->outstanding_isize = ordered->outstanding_isize; - goto out; - } - new_i_size = min_t(u64, offset, i_size); - - /* - * Some ordered extents may completed before the current one, and - * we hold the real i_size in ->outstanding_isize. - */ - if (ordered && ordered->outstanding_isize > new_i_size) - new_i_size = min_t(u64, ordered->outstanding_isize, i_size); - BTRFS_I(inode)->disk_i_size = new_i_size; - ret = 0; -out: - /* - * We need to do this because we can't remove ordered extents until - * after the i_disk_size has been updated and then the inode has been - * updated to reflect the change, so we need to tell anybody who finds - * this ordered extent that we've already done all the real work, we - * just haven't completed all the other work. - */ - if (ordered) - set_bit(BTRFS_ORDERED_UPDATED_ISIZE, &ordered->flags); - spin_unlock_irq(&tree->lock); - return ret; -} - -/* * search the ordered extents for one corresponding to 'offset' and * try to find a checksum. This is used because we allow pages to * be reclaimed before their checksum is actually put into the btree diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index 3beb4da4ab41..a46f319d9ae0 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -52,11 +52,6 @@ enum { BTRFS_ORDERED_DIRECT, /* We had an io error when writing this out */ BTRFS_ORDERED_IOERR, - /* - * indicates whether this ordered extent has done its due diligence in - * updating the isize - */ - BTRFS_ORDERED_UPDATED_ISIZE, /* Set when we have to truncate an extent */ BTRFS_ORDERED_TRUNCATED, /* Regular IO for COW */ @@ -182,8 +177,6 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range( struct btrfs_inode *inode, u64 file_offset, u64 len); -int btrfs_ordered_update_i_size(struct inode *inode, u64 offset, - struct btrfs_ordered_extent *ordered); int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr, u8 *sum, int len); u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr, diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h index 16ade35e8170..f1f2b6a04052 100644 --- a/include/trace/events/btrfs.h +++ b/include/trace/events/btrfs.h @@ -469,7 +469,6 @@ DEFINE_EVENT( { (1 << BTRFS_ORDERED_PREALLOC), "PREALLOC" }, \ { (1 << BTRFS_ORDERED_DIRECT), "DIRECT" }, \ { (1 << BTRFS_ORDERED_IOERR), "IOERR" }, \ - { (1 << BTRFS_ORDERED_UPDATED_ISIZE), "UPDATED_ISIZE" }, \ { (1 << BTRFS_ORDERED_TRUNCATED), "TRUNCATED" }) |