diff options
| author | Christophe Leroy <[email protected]> | 2022-01-14 14:05:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2022-01-15 16:30:26 +0200 |
| commit | 677b2a8c1f25db5b09c1ef5bf72faa39ea81d9cf (patch) | |
| tree | 663d5a0a7a5fade5b9edaeb0c7ef16fd320b0d23 /tools/perf/scripts/python/bin | |
| parent | 43b93121056c524e2af77d561900ea856d32029c (diff) | |
gup: avoid multiple user access locking/unlocking in fault_in_{read/write}able
fault_in_readable() and fault_in_writeable() perform __get_user() and
__put_user() in a loop, implying multiple user access locking/unlocking.
To avoid that, use user access blocks.
Link: https://lkml.kernel.org/r/720dcf79314acca1a78fae56d478cc851952149d.1637084492.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <[email protected]>
Reviewed-by: Andreas Gruenbacher <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions