Revision 26178ec11ef3c6c814bf16a0a2b9c2f7242e3c64 authored by Linus Torvalds on 15 December 2014, 23:07:33 UTC, committed by Linus Torvalds on 15 December 2014, 23:07:33 UTC
The VM_FAULT_RETRY handling was confusing and incorrect for the case of returning to kernel mode. We need to handle the exception table fixup if we return to kernel mode due to a fatal signal - it will basically look to the kernel user mode access like the access failed due to the VM going away from udner it. Which is correct - the process is dying - and avoids the whole "repeat endless kernel page faults" case. Handling the VM_FAULT_RETRY early and in just one place also simplifies the mmap_sem handling, since once we've taken care of VM_FAULT_RETRY we know that we can just drop the lock. The remaining accounting and possible error handling is thread-local and does not need the mmap_sem. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1.1 KB |
| .mailmap | -rw-r--r-- | 4.7 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 93.8 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 291.1 KB |
| Makefile | -rw-r--r-- | 53.2 KB |
| README | -rw-r--r-- | 18.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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