diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-03 12:12:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-03 12:12:16 -0700 |
| commit | 1e512b08da88dc2f28afb70406c5a6b2cd7531e4 (patch) | |
| tree | f713fdaa4c5ee9e817de1ede39f6035ed29e9319 /include/linux/backing-dev.h | |
| parent | 1c65ae63c061c8eb22c780d99ebcd4492743c04e (diff) | |
| parent | 758dd7fdffd60507624edce34fff122a63163b3f (diff) | |
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Mainly sending this off now for the writeback fixes, since they fix a
real regression introduced with the cgroup writeback changes. The
NVMe fix could wait for next pull for this series, but it's simple
enough that we might as well include it.
This contains:
- two cgroup writeback fixes from Tejun, fixing a user reported issue
with luks crypt devices hanging when being closed.
- NVMe error cleanup fix from Jon Derrick, fixing a case where we'd
attempt to free an unregistered IRQ"
* 'for-linus' of git://git.kernel.dk/linux-block:
NVMe: Fix irq freeing when queue_request_irq fails
writeback: don't drain bdi_writeback_congested on bdi destruction
writeback: don't embed root bdi_writeback_congested in bdi_writeback
Diffstat (limited to 'include/linux/backing-dev.h')
| -rw-r--r-- | include/linux/backing-dev.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 0e6d4828a77a..0fe9df983ab7 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -15,6 +15,7 @@ #include <linux/writeback.h> #include <linux/blk-cgroup.h> #include <linux/backing-dev-defs.h> +#include <linux/slab.h> int __must_check bdi_init(struct backing_dev_info *bdi); void bdi_destroy(struct backing_dev_info *bdi); @@ -465,11 +466,14 @@ static inline bool inode_cgwb_enabled(struct inode *inode) static inline struct bdi_writeback_congested * wb_congested_get_create(struct backing_dev_info *bdi, int blkcg_id, gfp_t gfp) { - return bdi->wb.congested; + atomic_inc(&bdi->wb_congested->refcnt); + return bdi->wb_congested; } static inline void wb_congested_put(struct bdi_writeback_congested *congested) { + if (atomic_dec_and_test(&congested->refcnt)) + kfree(congested); } static inline struct bdi_writeback *wb_find_current(struct backing_dev_info *bdi) |