wireguard-linux/fs/bcachefs/btree_node_scan.h, branch update-toolchainWireGuard for the Linux kernelhttps://git.zx2c4.com/wireguard-linux/atom/fs/bcachefs/btree_node_scan.h?h=update-toolchain2024-04-03T18:44:18Zbcachefs: Repair pass for scanning for btree nodes2024-04-03T18:44:18ZKent Overstreetkent.overstreet@linux.dev2024-03-12T03:11:46Zurn:sha1:4409b8081d1624af814a9cda781ad9cdda3973cb
If a btree root or interior btree node goes bad, we're going to lose a
lot of data, unless we can recover the nodes that it pointed to by
scanning.
Fortunately btree node headers are fully self describing, and
additionally the magic number is xored with the filesytem UUID, so we
can do so safely.
This implements the scanning - next patch will rework topology repair to
make use of the found nodes.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>