This is a small follow up to the conversation with Hou in the following
thread:
https://lore.kernel.org/bpf/[email protected]/T/#u
Namely, the conversation was about that comments in <linux/bpf.h>
describing the return values from the batch operations are not 100%
obvious. I tried to make comments more clear. While doing this I also
found that this is better to patch how __htab_map_lookup_and_delete_batch
sets return values: the output parameter count could be set to non-zero in
case of error, which may confuse some userspace apps (as errno && non-zero
counter is considered a partially successful operation for batch ops).
Anton Protopopov (2):
bpf: fix setting return values for htab batch ops
bpf: update uapi/linux/bpf.h docs on the batch map ops
include/uapi/linux/bpf.h | 22 ++++++++++++----------
kernel/bpf/hashtab.c | 14 +++++++-------
2 files changed, 19 insertions(+), 17 deletions(-)
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2.34.1