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| author | Jan Kara <jack@suse.cz> | 2018-02-26 13:01:39 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-02-26 09:48:42 -0700 |
| commit | 9df6c29912315186fef1c79cc15b758ace84175b (patch) | |
| tree | f750cc3053a805b3e2d7b0caac7acd281a64b94a /block/genhd.c | |
| parent | 3079c22ea815775837a4f389ce2f7e1e7b202e09 (diff) | |
| download | linux-9df6c29912315186fef1c79cc15b758ace84175b.tar.gz linux-9df6c29912315186fef1c79cc15b758ace84175b.tar.bz2 linux-9df6c29912315186fef1c79cc15b758ace84175b.zip | |
genhd: Add helper put_disk_and_module()
Add a proper counterpart to get_disk_and_module() -
put_disk_and_module(). Currently it is opencoded in several places.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/block/genhd.c b/block/genhd.c index 21b2843b27d0..4c0590434591 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -817,10 +817,7 @@ struct gendisk *get_gendisk(dev_t devt, int *partno) } if (disk && unlikely(disk->flags & GENHD_FL_HIDDEN)) { - struct module *owner = disk->fops->owner; - - put_disk(disk); - module_put(owner); + put_disk_and_module(disk); disk = NULL; } return disk; @@ -1483,6 +1480,21 @@ void put_disk(struct gendisk *disk) } EXPORT_SYMBOL(put_disk); +/* + * This is a counterpart of get_disk_and_module() and thus also of + * get_gendisk(). + */ +void put_disk_and_module(struct gendisk *disk) +{ + if (disk) { + struct module *owner = disk->fops->owner; + + put_disk(disk); + module_put(owner); + } +} +EXPORT_SYMBOL(put_disk_and_module); + static void set_disk_ro_uevent(struct gendisk *gd, int ro) { char event[] = "DISK_RO=1"; |