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| author | Keith Busch <keith.busch@intel.com> | 2014-08-26 09:05:36 -0600 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-11-05 20:27:40 +0000 |
| commit | a288cafeceb6e18ba4fd10ec8d3270593472cca6 (patch) | |
| tree | 3ec11e6f9758e5620b7d4f8ad55bc77ba9dd8083 /block/elevator.c | |
| parent | 1cc8e21690688b24b0b9388dbb14e1d2cf4f94b4 (diff) | |
| download | kernel_samsung_smdk4412-a288cafeceb6e18ba4fd10ec8d3270593472cca6.zip kernel_samsung_smdk4412-a288cafeceb6e18ba4fd10ec8d3270593472cca6.tar.gz kernel_samsung_smdk4412-a288cafeceb6e18ba4fd10ec8d3270593472cca6.tar.bz2 | |
block: Fix dev_t minor allocation lifetime
commit 2da78092dda13f1efd26edbbf99a567776913750 upstream.
Releases the dev_t minor when all references are closed to prevent
another device from acquiring the same major/minor.
Since the partition's release may be invoked from call_rcu's soft-irq
context, the ext_dev_idr's mutex had to be replaced with a spinlock so
as not so sleep.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
[bwh: Backported to 3.2:
- Adjust filename
- idr insertion API is different, and blk_alloc_devt() is preallocating
a node in a different way]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'block/elevator.c')
0 files changed, 0 insertions, 0 deletions