From: Hou Tao <houtao1@xxxxxxxxxx>
Hi,
The simple patch set aims to replace GFP_ATOMIC by GFP_KERNEL in
bpf_event_entry_gen(). These two patches in the patch set were
preparatory patches in "Fix the release of inner map" patchset [1] and
are not needed for v2, so re-post it to bpf-next tree.
Patch #1 reduces the scope of rcu_read_lock when updating fd map and
patch #2 replaces GFP_ATOMIC by GFP_KERNEL. Please see individual
patches for more details.
Comments are always welcome.
Change Log:
v3:
* patch #1: fallback to patch #1 in v1. Update comments in
bpf_fd_htab_map_update_elem() to explain the reason for
rcu_read_lock() (Alexei)
v2: https://lore.kernel.org/bpf/20231211073843.1888058-1-houtao@xxxxxxxxxxxxxxx/
* patch #1: add rcu_read_lock/unlock() for bpf_fd_array_map_update_elem
as well to make it consistent with
bpf_fd_htab_map_update_elem and update commit message
accordingly (Alexei)
* patch #1/#2: collects ack tags from Yonghong
v1: https://lore.kernel.org/bpf/20231208103357.2637299-1-houtao@xxxxxxxxxxxxxxx/
[1]: https://lore.kernel.org/bpf/20231107140702.1891778-1-houtao@xxxxxxxxxxxxxxx/
Hou Tao (2):
bpf: Reduce the scope of rcu_read_lock when updating fd map
bpf: Use GFP_KERNEL in bpf_event_entry_gen()
kernel/bpf/arraymap.c | 2 +-
kernel/bpf/hashtab.c | 6 ++++++
kernel/bpf/syscall.c | 4 ----
3 files changed, 7 insertions(+), 5 deletions(-)
--
2.29.2
