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| author |   Bart Van Assche <bart.vanassche@sandisk.com> | 2017-02-09 17:28:50 -0800 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2017-06-12 13:20:20 +0200 |
| commit | 19e72d3abb63cb16d021a4066ce1a18880509e99 (patch) | |
| tree | 4d8228390a3f8b4697552bfa807232f71731bd8f /fs/configfs | |
| parent | configfs: Fix race between create_link and configfs_rmdir (diff) | |
| download | linux-dev-19e72d3abb63cb16d021a4066ce1a18880509e99.tar.xz linux-dev-19e72d3abb63cb16d021a4066ce1a18880509e99.zip | |
configfs: Introduce config_item_get_unless_zero()
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
[hch: minor style tweak]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/configfs')
| -rw-r--r-- | fs/configfs/item.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/configfs/item.c b/fs/configfs/item.c index 8b2a994042dd..a66f6624d899 100644 --- a/fs/configfs/item.c +++ b/fs/configfs/item.c @@ -138,6 +138,14 @@ struct config_item *config_item_get(struct config_item *item) } EXPORT_SYMBOL(config_item_get); +struct config_item *config_item_get_unless_zero(struct config_item *item) +{ + if (item && kref_get_unless_zero(&item->ci_kref)) + return item; + return NULL; +} +EXPORT_SYMBOL(config_item_get_unless_zero); + static void config_item_cleanup(struct config_item *item) { struct config_item_type *t = item->ci_type; |