summaryrefslogtreecommitdiffstats
path: root/drivers/dax
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2021-08-26 15:55:08 +0200
committerDan Williams <dan.j.williams@intel.com>2021-08-26 16:52:03 -0700
commit60b8340f0d6587d7b51990689fcdae567f309fbf (patch)
tree6f9e5e08b881c05bd5b377c18359f82e835b7a09 /drivers/dax
parentcd93a2a4d1b076f5c73d70d836c202bbcbeea49e (diff)
downloadlinux-60b8340f0d6587d7b51990689fcdae567f309fbf.tar.bz2
dax: stub out dax_supported for !CONFIG_FS_DAX
dax_supported calls into ->dax_supported which checks for fsdax support. Don't bother building it for !CONFIG_FS_DAX as it will always return false. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/r/20210826135510.6293-8-hch@lst.de Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dax')
-rw-r--r--drivers/dax/super.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index 8e8ccb3e956b..eed02729add3 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -201,6 +201,24 @@ bool generic_fsdax_supported(struct dax_device *dax_dev,
return true;
}
EXPORT_SYMBOL_GPL(generic_fsdax_supported);
+
+bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
+ int blocksize, sector_t start, sector_t len)
+{
+ bool ret = false;
+ int id;
+
+ if (!dax_dev)
+ return false;
+
+ id = dax_read_lock();
+ if (dax_alive(dax_dev) && dax_dev->ops->dax_supported)
+ ret = dax_dev->ops->dax_supported(dax_dev, bdev, blocksize,
+ start, len);
+ dax_read_unlock(id);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(dax_supported);
#endif /* CONFIG_FS_DAX */
/**
@@ -350,24 +368,6 @@ long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages,
}
EXPORT_SYMBOL_GPL(dax_direct_access);
-bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
- int blocksize, sector_t start, sector_t len)
-{
- bool ret = false;
- int id;
-
- if (!dax_dev)
- return false;
-
- id = dax_read_lock();
- if (dax_alive(dax_dev) && dax_dev->ops->dax_supported)
- ret = dax_dev->ops->dax_supported(dax_dev, bdev, blocksize,
- start, len);
- dax_read_unlock(id);
- return ret;
-}
-EXPORT_SYMBOL_GPL(dax_supported);
-
size_t dax_copy_from_iter(struct dax_device *dax_dev, pgoff_t pgoff, void *addr,
size_t bytes, struct iov_iter *i)
{