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btrfs: send: fix lost error return value in will_overwrite_ref()

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The direct-return refactoring in commit b3047a42f5 ("btrfs: send:
directly return from will_overwrite_ref() and simplify it") changed
will_overwrite_ref() to return directly instead of going through the
common out label.

That resulted in a negative return value from is_inode_existent() to
start being converted to 0, making lookup errors unable to be
distinguished from the inode not existing.

process_recorded_refs() expects negative errors from
will_overwrite_ref() and aborts processing when it receives one.

Return the value from is_inode_existent() to restore the previous error
propagation behavior as it was before the refactor.

Fixes: b3047a42f5 ("btrfs: send: directly return from will_overwrite_ref() and simplify it")
Signed-off-by: Avi Weiss <thnkslprpt@gmail.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Avi Weiss 2026-08-10 12:47:01 +03:00 committed by David Sterba
parent 529c01c3dc
commit d0285dfbc3
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/send.c
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@ -2065,7 +2065,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
ret = is_inode_existent(sctx, dir, dir_gen, NULL, &parent_root_dir_gen);
if (ret <= 0)
return 0;
return ret;
/*
* If we have a parent root we need to verify that the parent dir was