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author	Kent Overstreet <kent.overstreet@linux.dev>
	Mon, 28 Oct 2024 00:40:20 +0000 (20:40 -0400)
committer	Kent Overstreet <kent.overstreet@linux.dev>
	Thu, 7 Nov 2024 21:48:17 +0000 (16:48 -0500)
commit	fd00045f383f51b66a7a46084a0e92b8de563157
tree	d905d0bcbe2fd8322876970757cf46fd81ba6549	tree
parent	59b723cd2adbac2a34fc8e12c74ae26ae45bf230	commit \| diff

bcachefs: Fix null ptr deref in bucket_gen_get()

bucket_gen() checks if we're lookup up a valid bucket and returns NULL
otherwise, but bucket_gen_get() was failing to check; other callers were
correct.

Also do a bit of cleanup on callers.

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

fs/bcachefs/btree_node_scan.c		diff \| blob \| history
fs/bcachefs/buckets.h		diff \| blob \| history
fs/bcachefs/io_read.c		diff \| blob \| history
fs/bcachefs/io_write.c		diff \| blob \| history

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