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 |
|---|---|---|
| partitions | ||
| Kconfig | -rw-r--r-- | 3.7 KB |
| Kconfig.iosched | -rw-r--r-- | 1.6 KB |
| Makefile | -rw-r--r-- | 923 bytes |
| bio-integrity.c | -rw-r--r-- | 14.0 KB |
| bio.c | -rw-r--r-- | 51.2 KB |
| blk-cgroup.c | -rw-r--r-- | 29.6 KB |
| blk-cgroup.h | -rw-r--r-- | 16.6 KB |
| blk-core.c | -rw-r--r-- | 89.3 KB |
| blk-exec.c | -rw-r--r-- | 3.5 KB |
| blk-flush.c | -rw-r--r-- | 14.8 KB |
| blk-integrity.c | -rw-r--r-- | 12.4 KB |
| blk-ioc.c | -rw-r--r-- | 10.2 KB |
| blk-iopoll.c | -rw-r--r-- | 5.8 KB |
| blk-lib.c | -rw-r--r-- | 7.3 KB |
| blk-map.c | -rw-r--r-- | 8.2 KB |
| blk-merge.c | -rw-r--r-- | 14.9 KB |
| blk-mq-cpu.c | -rw-r--r-- | 1.6 KB |
| blk-mq-cpumap.c | -rw-r--r-- | 2.5 KB |
| blk-mq-sysfs.c | -rw-r--r-- | 10.6 KB |
| blk-mq-tag.c | -rw-r--r-- | 14.5 KB |
| blk-mq-tag.h | -rw-r--r-- | 2.0 KB |
| blk-mq.c | -rw-r--r-- | 49.5 KB |
| blk-mq.h | -rw-r--r-- | 3.2 KB |
| blk-settings.c | -rw-r--r-- | 27.2 KB |
| blk-softirq.c | -rw-r--r-- | 4.4 KB |
| blk-sysfs.c | -rw-r--r-- | 15.5 KB |
| blk-tag.c | -rw-r--r-- | 9.4 KB |
| blk-throttle.c | -rw-r--r-- | 45.8 KB |
| blk-timeout.c | -rw-r--r-- | 5.7 KB |
| blk.h | -rw-r--r-- | 8.6 KB |
| bounce.c | -rw-r--r-- | 6.5 KB |
| bsg-lib.c | -rw-r--r-- | 6.0 KB |
| bsg.c | -rw-r--r-- | 23.6 KB |
| cfq-iosched.c | -rw-r--r-- | 120.1 KB |
| cmdline-parser.c | -rw-r--r-- | 4.9 KB |
| compat_ioctl.c | -rw-r--r-- | 20.8 KB |
| deadline-iosched.c | -rw-r--r-- | 11.3 KB |
| elevator.c | -rw-r--r-- | 23.7 KB |
| genhd.c | -rw-r--r-- | 44.3 KB |
| ioctl.c | -rw-r--r-- | 10.7 KB |
| ioprio.c | -rw-r--r-- | 5.0 KB |
| noop-iosched.c | -rw-r--r-- | 2.7 KB |
| partition-generic.c | -rw-r--r-- | 14.0 KB |
| scsi_ioctl.c | -rw-r--r-- | 19.6 KB |
| t10-pi.c | -rw-r--r-- | 5.1 KB |
Computing file changes ...
