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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-11-26 12:24:38 -0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-12-12 14:24:13 +0100 |
| commit | 253ca8678d30bcf94410b54476fc1e0f1627a137 (patch) | |
| tree | 4727be75e2660bf1a1a54701f16dddb74a35b335 /Documentation/doc-guide | |
| parent | 7cb537b6f6d7d6529be04139178f929d9a63b918 (diff) | |
| download | linux-253ca8678d30bcf94410b54476fc1e0f1627a137.tar.gz linux-253ca8678d30bcf94410b54476fc1e0f1627a137.tar.bz2 linux-253ca8678d30bcf94410b54476fc1e0f1627a137.zip | |
Improve __fget_files_rcu() code generation (and thus __fget_light())
Commit 0ede61d8589c ("file: convert to SLAB_TYPESAFE_BY_RCU") caused a
performance regression as reported by the kernel test robot.
The __fget_light() function is one of those critical ones for some
loads, and the code generation was unnecessarily impacted. Let's just
write that function to better.
Reported-by: kernel test robot <oliver.sang@intel.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Closes: https://lore.kernel.org/oe-lkp/202311201406.2022ca3f-oliver.sang@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/CAHk-=wiCJtLbFWNURB34b9a_R_unaH3CiMRXfkR0-iihB_z68A@mail.gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'Documentation/doc-guide')
0 files changed, 0 insertions, 0 deletions