bcachefs: Handle dropping pointers in data_update path

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Cached pointers are generally dropped, not moved: this led to an
assertion firing in the data update path when there were no new replicas
being written.

This path adds a data_options field for pointers to be dropped, and
tweaks move_extent() to check if we're only dropping pointers, not
writing new ones, before kicking off a data update operation.

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

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This commit is contained in:

Kent Overstreet 2022-10-09 03:32:17 -04:00

parent 160dff6dad

commit 1be887979b

3 changed files with 78 additions and 3 deletions

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23

fs/bcachefs/data_update.c

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2

fs/bcachefs/data_update.h

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56

fs/bcachefs/move.c

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