bcachefs: Don't reuse reflink btree keyspace

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We've been seeing difficult to debug "missing indirect extent" bugs,
that fsck doesn't seem to find.

One possibility is that there was a missing indirect extent, but then a
new indirect extent was created at the location of the previous indirect
extent.

This patch eliminates that possibility by always creating new indirect
extents right after the last one, at the end of the reflink btree.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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This commit is contained in:

Kent Overstreet 2023-05-25 23:37:06 -04:00

parent db32bb9a5f

commit fc0ee376bb

2 changed files with 4 additions and 17 deletions

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1

fs/bcachefs/bcachefs.h

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20

fs/bcachefs/reflink.c

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