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| author | Shaohua Li <shaohua.li@intel.com> | 2011-03-22 08:35:35 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-03-22 08:35:35 +0100 |
| commit | 1e9bb8808ac11094d711d20d580e7b45a4992d0c (patch) | |
| tree | d0e228b619664b7f507e37e5eba4a5ebeef103a0 /fs/partitions/check.c | |
| parent | 5e84ea3a9c662dc2d7a48703a4468fad954a3b7f (diff) | |
| download | op-kernel-dev-1e9bb8808ac11094d711d20d580e7b45a4992d0c.zip op-kernel-dev-1e9bb8808ac11094d711d20d580e7b45a4992d0c.tar.gz | |
block: fix non-atomic access to genhd inflight structures
After the stack plugging introduction, these are called lockless.
Ensure that the counters are updated atomically.
Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs/partitions/check.c')
| -rw-r--r-- | fs/partitions/check.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 9c21119..ac54697 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -290,7 +290,8 @@ ssize_t part_inflight_show(struct device *dev, { struct hd_struct *p = dev_to_part(dev); - return sprintf(buf, "%8u %8u\n", p->in_flight[0], p->in_flight[1]); + return sprintf(buf, "%8u %8u\n", atomic_read(&p->in_flight[0]), + atomic_read(&p->in_flight[1])); } #ifdef CONFIG_FAIL_MAKE_REQUEST |
