diff options
| author | Tiwei Bie <[email protected]> | 2024-10-11 18:23:53 +0800 |
|---|---|---|
| committer | Johannes Berg <[email protected]> | 2024-10-23 09:52:49 +0200 |
| commit | 2717c6b649e1840328c2758a478bf4034a22ac3e (patch) | |
| tree | e25a72d6d3a34140f62d645ba72c6ae78cbedb65 /arch/um/include/shared/os.h | |
| parent | 90daca7c8f6f33e9482591446d2e76b18a21be49 (diff) | |
um: Abandon the _PAGE_NEWPROT bit
When a PTE is updated in the page table, the _PAGE_NEWPAGE bit will
always be set. And the corresponding page will always be mapped or
unmapped depending on whether the PTE is present or not. The check
on the _PAGE_NEWPROT bit is not really reachable. Abandoning it will
allow us to simplify the code and remove the unreachable code.
Reviewed-by: Benjamin Berg <[email protected]>
Signed-off-by: Tiwei Bie <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Johannes Berg <[email protected]>
Diffstat (limited to 'arch/um/include/shared/os.h')
| -rw-r--r-- | arch/um/include/shared/os.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index bf539fee7831..09f8201de5db 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -279,8 +279,6 @@ int map(struct mm_id *mm_idp, unsigned long virt, unsigned long len, int prot, int phys_fd, unsigned long long offset); int unmap(struct mm_id *mm_idp, unsigned long addr, unsigned long len); -int protect(struct mm_id *mm_idp, unsigned long addr, - unsigned long len, unsigned int prot); /* skas/process.c */ extern int is_skas_winch(int pid, int fd, void *data); |