add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/btrfs/Makefile
..
..
@@ -10,7 +10,8 @@
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 	   export.o tree-log.o free-space-cache.o zlib.o lzo.o zstd.o \
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 	   compression.o delayed-ref.o relocation.o delayed-inode.o scrub.o \
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 	   reada.o backref.o ulist.o qgroup.o send.o dev-replace.o raid56.o \
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-	   uuid-tree.o props.o free-space-tree.o tree-checker.o
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+	   uuid-tree.o props.o free-space-tree.o tree-checker.o space-info.o \
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+	   block-rsv.o delalloc-space.o block-group.o discard.o reflink.o
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 btrfs-$(CONFIG_BTRFS_FS_POSIX_ACL) += acl.o
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 btrfs-$(CONFIG_BTRFS_FS_CHECK_INTEGRITY) += check-integrity.o