mirror of
https://github.com/torvalds/linux.git
synced 2026-05-05 23:05:25 -04:00
4ef4ac3601
The routine gets called for every path component during lookup. ->i_mode is going to be cached on account of permission checks, while ->i_rdev is an area which is most likely cache-cold. gcc 14.2 is kind enough to emit one branch: movzwl (%rbx),%eax mov %eax,%edx and $0xb000,%dx cmp $0x2000,%dx je 11bc <inode_permission+0xec> This patch is lazy in that I don't know if the ->i_rdev branch makes any sense with the newly added mode check upfront. I am not changing any semantics here though. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/20250416221626.2710239-3-mjguzik@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>