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authorKent Overstreet <kent.overstreet@gmail.com>2022-03-17 20:51:27 -0400
committerKent Overstreet <kent.overstreet@linux.dev>2023-10-22 17:09:50 -0400
commita8c752bb1d93a24a0de753e209d4f4d58d65c878 (patch)
treec0acc070a99c2c869e535b34be3fdff39ee9bd06 /fs/bcachefs/Makefile
parent920e69bc3db88d3825c69190cafd43f0a1918d3b (diff)
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bcachefs: New on disk format: Backpointers
This patch adds backpointers: we now have a reverse index from device and offset on that device (specifically, offset within a bucket) back to btree nodes and (non cached) data extents. The first 40 backpointers within a bucket are stored in the alloc key; after that backpointers spill over to the next backpointers btree. This is to help avoid performance regressions from additional btree updates on large streaming workloads. This patch adds all the code for creating, checking and repairing backpointers. The next patch in the series is going to use backpointers for copygc - finally getting rid of the need to scan all extents to do copygc. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/Makefile')
-rw-r--r--fs/bcachefs/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/bcachefs/Makefile b/fs/bcachefs/Makefile
index c0e715760c8b..456d540441ce 100644
--- a/fs/bcachefs/Makefile
+++ b/fs/bcachefs/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_BCACHEFS_FS) += bcachefs.o
bcachefs-y := \
alloc_background.o \
alloc_foreground.o \
+ backpointers.o \
bkey.o \
bkey_methods.o \
bkey_sort.o \