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| author | Carlos Llamas <cmllamas@google.com> | 2023-05-02 20:12:17 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-30 14:03:19 +0100 |
| commit | 7e6b8548549e1fa87fbdd6b54f07b8c37a6d4b5e (patch) | |
| tree | 51a8f72bd9854426fdaeb960dffc393829f30171 /lib/debugobjects.c | |
| parent | 8069bcaa5b392ce3972dd72f184b2cc4b1b8262b (diff) | |
Revert "binder_alloc: add missing mmap_lock calls when using the VMA"
commit b15655b12ddca7ade09807f790bafb6fab61b50a upstream.
This reverts commit 44e602b4e52f70f04620bbbf4fe46ecb40170bde.
This caused a performance regression particularly when pages are getting
reclaimed. We don't need to acquire the mmap_lock to determine when the
binder buffer has been fully initialized. A subsequent patch will bring
back the lockless approach for this.
[cmllamas: resolved trivial conflicts with renaming of alloc->mm]
Fixes: 44e602b4e52f ("binder_alloc: add missing mmap_lock calls when using the VMA")
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20230502201220.1756319-1-cmllamas@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/debugobjects.c')
0 files changed, 0 insertions, 0 deletions