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| author | Christoph Hellwig <hch@lst.de> | 2021-08-26 15:55:08 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2021-08-26 16:52:03 -0700 |
| commit | 60b8340f0d6587d7b51990689fcdae567f309fbf (patch) | |
| tree | 6f9e5e08b881c05bd5b377c18359f82e835b7a09 /drivers/dax | |
| parent | cd93a2a4d1b076f5c73d70d836c202bbcbeea49e (diff) | |
| download | lwn-60b8340f0d6587d7b51990689fcdae567f309fbf.tar.gz lwn-60b8340f0d6587d7b51990689fcdae567f309fbf.zip | |
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.c | 36 |
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) { |