forked from luck/tmp_suning_uos_patched
f33ea7f404
Checking pte_dirty instead of pte_write in __follow_page is problematic for s390, and for copy_one_pte which leaves dirty when clearing write. So revert __follow_page to check pte_write as before, and make do_wp_page pass back a special extra VM_FAULT_WRITE bit to say it has done its full job: once get_user_pages receives this value, it no longer requires pte_write in __follow_page. But most callers of handle_mm_fault, in the various architectures, have switch statements which do not expect this new case. To avoid changing them all in a hurry, make an inline wrapper function (using the old name) that masks off the new bit, and use the extended interface with double underscores. Yes, we do have a call to do_wp_page from do_swap_page, but no need to change that: in rare case it's needed, another do_wp_page will follow. Signed-off-by: Hugh Dickins <hugh@veritas.com> [ Cleanups by Nick Piggin ] Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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acpi | ||
asm-alpha | ||
asm-arm | ||
asm-arm26 | ||
asm-cris | ||
asm-frv | ||
asm-generic | ||
asm-h8300 | ||
asm-i386 | ||
asm-ia64 | ||
asm-m32r | ||
asm-m68k | ||
asm-m68knommu | ||
asm-mips | ||
asm-parisc | ||
asm-ppc | ||
asm-ppc64 | ||
asm-s390 | ||
asm-sh | ||
asm-sh64 | ||
asm-sparc | ||
asm-sparc64 | ||
asm-um | ||
asm-v850 | ||
asm-x86_64 | ||
asm-xtensa | ||
linux | ||
math-emu | ||
media | ||
mtd | ||
net | ||
pcmcia | ||
rxrpc | ||
scsi | ||
sound | ||
video |