btrfs: do not BUG_ON() on tree mod log failures at btrfs_del_ptr()

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At btrfs_del_ptr(), instead of doing a BUG_ON() in case we fail to record
tree mod log operations, do a transaction abort and return the error to
the callers. There's really no need for the BUG_ON() as we can release all
resources in the context of all callers, and we have to abort because other
future tree searches that use the tree mod log (btrfs_search_old_slot())
may get inconsistent results if other operations modify the tree after
that failure and before the tree mod log based search.

This implies btrfs_del_ptr() return an int instead of void, and making all
callers check for returned errors.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Filipe Manana 2023-06-08 11:27:49 +01:00 • committed by David Sterba

parent 50b5d1fc41

commit 751a27615d

2 changed files with 41 additions and 15 deletions

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52

fs/btrfs/ctree.c

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4

fs/btrfs/ctree.h

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