https://github.com/torvalds/linux
Revision 66657b318e0e443ada229fccd40c8be86cfebdbf authored by Josef Bacik on 01 August 2012, 19:36:24 UTC, committed by Chris Mason on 28 August 2012, 20:53:33 UTC
We need a barrir before calling waitqueue_active otherwise we will miss wakeups. So in places that do atomic_dec(); then atomic_read() use atomic_dec_return() which imply a memory barrier (see memory-barriers.txt) and then add an explicit memory barrier everywhere else that need them. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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History 
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Tip revision: 66657b318e0e443ada229fccd40c8be86cfebdbf authored by Josef Bacik on 01 August 2012, 19:36:24 UTC
Btrfs: barrier before waitqueue_active
Btrfs: barrier before waitqueue_active
Tip revision: 66657b3
| 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-- | 1014 bytes |
| .mailmap | -rw-r--r-- | 4.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 92.7 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 208.2 KB |
| Makefile | -rw-r--r-- | 46.0 KB |
| README | -rw-r--r-- | 17.3 KB |
| REPORTING-BUGS | -rw-r--r-- | 3.3 KB |
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