GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

fs: allow per-device dax status checking for filesystems

Browse source 
Change bdev_dax_supported so it takes a bdev parameter.  This enables
multi-device filesystems like xfs to check that a dax device can work for
the particular filesystem.  Once that's in place, actually fix all the
parts of XFS where we need to be able to distinguish between datadev and
rtdev.

This patch fixes the problem where we screw up the dax support checking
in xfs if the datadev and rtdev have different dax capabilities.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[rez: Re-added __bdev_dax_supported() for !CONFIG_FS_DAX cases]
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
This commit is contained in:
Darrick J. Wong 2018-05-30 13:03:45 -07:00
parent d25522f10c
commit ba23cba9b3
7 changed files with 55 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

9
include/linux/dax.h
View file

@ -64,10 +64,10 @@ static inline bool dax_write_cache_enabled(struct dax_device *dax_dev)
struct writeback_control;
int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff);
#if IS_ENABLED(CONFIG_FS_DAX)
int __bdev_dax_supported(struct super_block *sb, int blocksize);
static inline int bdev_dax_supported(struct super_block *sb, int blocksize)
int __bdev_dax_supported(struct block_device *bdev, int blocksize);
static inline int bdev_dax_supported(struct block_device *bdev, int blocksize)
{
return __bdev_dax_supported(sb, blocksize);
return __bdev_dax_supported(bdev, blocksize);
}
static inline struct dax_device *fs_dax_get_by_host(const char *host)
@ -84,7 +84,8 @@ struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev);
int dax_writeback_mapping_range(struct address_space *mapping,
struct block_device *bdev, struct writeback_control *wbc);
#else
static inline int bdev_dax_supported(struct super_block *sb, int blocksize)
static inline int bdev_dax_supported(struct block_device *bdev,
int blocksize)
{
return -EOPNOTSUPP;
}