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btrfs: cleanup calculation of lockend in lock_and_cleanup_extent_if_need()
We're just doing rounding up to sectorsize to calculate the lockend. There is no need to do the unnecessary length calculation, just direct round_up() is enough. Reviewed-by: Nikolay Borisov <nborisov@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>
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@ -1477,9 +1477,7 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages,
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int ret = 0;
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start_pos = round_down(pos, fs_info->sectorsize);
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last_pos = start_pos
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+ round_up(pos + write_bytes - start_pos,
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fs_info->sectorsize) - 1;
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last_pos = round_up(pos + write_bytes, fs_info->sectorsize) - 1;
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if (start_pos < inode->vfs_inode.i_size) {
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struct btrfs_ordered_extent *ordered;
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