bcachefs: bch2_dev_data_drop_by_backpointers()

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Currently, device removal has to scan all metadata for pointers to the
device being removed.

Add a new method, with the same interface as bch2_dev_data_drop(), that
scans by backpointers instead - this will drastically speed up device
removal.

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

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This commit is contained in:

Kent Overstreet 2025-05-03 21:36:23 -04:00

parent b3f80d0923

commit 09fa6c3039

2 changed files with 105 additions and 15 deletions

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117

fs/bcachefs/migrate.c

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3

fs/bcachefs/migrate.h

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