bcachefs: Whiteout changes

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More prep work for snapshots: extents will soon be using
KEY_TYPE_deleted for whiteouts, with 0 size. But we wen't be able to
keep these whiteouts with the rest of the extents in the btree node, due
to sorting invariants breaking.

We can deal with this by immediately moving the new whiteouts to the
unwritten whiteouts area - this just means those whiteouts won't be
sorted, so we need new code to sort them prior to merging them with the
rest of the keys to be written.

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

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This commit is contained in:

Kent Overstreet 2019-11-29 14:08:51 -05:00 • committed by Kent Overstreet

parent 183797e31d

commit c9bebae65e

5 changed files with 119 additions and 56 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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1

fs/bcachefs/btree_cache.c

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99

fs/bcachefs/btree_io.c

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1

fs/bcachefs/btree_types.h

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29

fs/bcachefs/btree_update_interior.h

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49

fs/bcachefs/btree_update_leaf.c

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