diff options
| author | Anton Ivanov <[email protected]> | 2018-12-05 12:37:41 +0000 |
|---|---|---|
| committer | Richard Weinberger <[email protected]> | 2018-12-27 22:48:34 +0100 |
| commit | 8892d8545f2d0342b9c550defbfb165db237044b (patch) | |
| tree | 0b48c4df948da4a350321e4d8067cf243562a37b /arch/um/kernel/tlb.c | |
| parent | 38e3cbd9b82c815006c505ad2995013a61af143e (diff) | |
um: Avoid marking pages with "changed protection"
Changing protection is a very high cost operation in UML
because in addition to an extra syscall it also interrupts
mmap merge sequences generated by the tlb.
While the condition is not particularly common it is worth
avoiding.
Signed-off-by: Anton Ivanov <[email protected]>
Signed-off-by: Richard Weinberger <[email protected]>
Diffstat (limited to 'arch/um/kernel/tlb.c')
0 files changed, 0 insertions, 0 deletions