xfs: add a xfs_inode_buftarg helper
Add a new xfs_inode_buftarg helper that gets the data I/O buftarg for a
given inode. Replace the existing xfs_find_bdev_for_inode and
xfs_find_daxdev_for_inode helpers with this new general one and cleanup
some of the callers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 5d3503f..3a688eb 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -30,32 +30,6 @@ XFS_WPC(struct iomap_writepage_ctx *ctx)
return container_of(ctx, struct xfs_writepage_ctx, ctx);
}
-struct block_device *
-xfs_find_bdev_for_inode(
- struct inode *inode)
-{
- struct xfs_inode *ip = XFS_I(inode);
- struct xfs_mount *mp = ip->i_mount;
-
- if (XFS_IS_REALTIME_INODE(ip))
- return mp->m_rtdev_targp->bt_bdev;
- else
- return mp->m_ddev_targp->bt_bdev;
-}
-
-struct dax_device *
-xfs_find_daxdev_for_inode(
- struct inode *inode)
-{
- struct xfs_inode *ip = XFS_I(inode);
- struct xfs_mount *mp = ip->i_mount;
-
- if (XFS_IS_REALTIME_INODE(ip))
- return mp->m_rtdev_targp->bt_daxdev;
- else
- return mp->m_ddev_targp->bt_daxdev;
-}
-
/*
* Fast and loose check if this write could update the on-disk inode size.
*/
@@ -609,9 +583,11 @@ xfs_dax_writepages(
struct address_space *mapping,
struct writeback_control *wbc)
{
- xfs_iflags_clear(XFS_I(mapping->host), XFS_ITRUNCATED);
+ struct xfs_inode *ip = XFS_I(mapping->host);
+
+ xfs_iflags_clear(ip, XFS_ITRUNCATED);
return dax_writeback_mapping_range(mapping,
- xfs_find_bdev_for_inode(mapping->host), wbc);
+ xfs_inode_buftarg(ip)->bt_bdev, wbc);
}
STATIC sector_t
@@ -661,7 +637,7 @@ xfs_iomap_swapfile_activate(
struct file *swap_file,
sector_t *span)
{
- sis->bdev = xfs_find_bdev_for_inode(file_inode(swap_file));
+ sis->bdev = xfs_inode_buftarg(XFS_I(file_inode(swap_file)))->bt_bdev;
return iomap_swapfile_activate(sis, swap_file, span,
&xfs_read_iomap_ops);
}
diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
index 687b11f3..e0bd684 100644
--- a/fs/xfs/xfs_aops.h
+++ b/fs/xfs/xfs_aops.h
@@ -11,7 +11,4 @@ extern const struct address_space_operations xfs_dax_aops;
int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
-extern struct block_device *xfs_find_bdev_for_inode(struct inode *);
-extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *);
-
#endif /* __XFS_AOPS_H__ */
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 99bf372..ba53201d 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -53,15 +53,16 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
*/
int
xfs_zero_extent(
- struct xfs_inode *ip,
- xfs_fsblock_t start_fsb,
- xfs_off_t count_fsb)
+ struct xfs_inode *ip,
+ xfs_fsblock_t start_fsb,
+ xfs_off_t count_fsb)
{
- struct xfs_mount *mp = ip->i_mount;
- xfs_daddr_t sector = xfs_fsb_to_db(ip, start_fsb);
- sector_t block = XFS_BB_TO_FSBT(mp, sector);
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_buftarg *target = xfs_inode_buftarg(ip);
+ xfs_daddr_t sector = xfs_fsb_to_db(ip, start_fsb);
+ sector_t block = XFS_BB_TO_FSBT(mp, sector);
- return blkdev_issue_zeroout(xfs_find_bdev_for_inode(VFS_I(ip)),
+ return blkdev_issue_zeroout(target->bt_bdev,
block << (mp->m_super->s_blocksize_bits - 9),
count_fsb << (mp->m_super->s_blocksize_bits - 9),
GFP_NOFS, 0);
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 2465966..ee4ebb7 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1229,22 +1229,22 @@ static const struct vm_operations_struct xfs_file_vm_ops = {
STATIC int
xfs_file_mmap(
- struct file *filp,
- struct vm_area_struct *vma)
+ struct file *file,
+ struct vm_area_struct *vma)
{
- struct dax_device *dax_dev;
+ struct inode *inode = file_inode(file);
+ struct xfs_buftarg *target = xfs_inode_buftarg(XFS_I(inode));
- dax_dev = xfs_find_daxdev_for_inode(file_inode(filp));
/*
* We don't support synchronous mappings for non-DAX files and
* for DAX files if underneath dax_device is not synchronous.
*/
- if (!daxdev_mapping_supported(vma, dax_dev))
+ if (!daxdev_mapping_supported(vma, target->bt_daxdev))
return -EOPNOTSUPP;
- file_accessed(filp);
+ file_accessed(file);
vma->vm_ops = &xfs_file_vm_ops;
- if (IS_DAX(file_inode(filp)))
+ if (IS_DAX(inode))
vma->vm_flags |= VM_HUGEPAGE;
return 0;
}
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 558173f..bcfb35a 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -220,6 +220,13 @@ static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip)
}
/*
+ * Return the buftarg used for data allocations on a given inode.
+ */
+#define xfs_inode_buftarg(ip) \
+ (XFS_IS_REALTIME_INODE(ip) ? \
+ (ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp)
+
+/*
* In-core inode flags.
*/
#define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index d58f0d6..b7b5c17 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1311,10 +1311,9 @@ xfs_ioctl_setattr_dax_invalidate(
* have to check the device for dax support or flush pagecache.
*/
if (fa->fsx_xflags & FS_XFLAG_DAX) {
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
- return -EINVAL;
- if (!bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)),
- sb->s_blocksize))
+ struct xfs_buftarg *target = xfs_inode_buftarg(ip);
+
+ if (!bdev_dax_supported(target->bt_bdev, sb->s_blocksize))
return -EINVAL;
}
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index e8fb500..8317b93 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -57,6 +57,7 @@ xfs_bmbt_to_iomap(
u16 flags)
{
struct xfs_mount *mp = ip->i_mount;
+ struct xfs_buftarg *target = xfs_inode_buftarg(ip);
if (unlikely(!xfs_valid_startblock(ip, imap->br_startblock)))
return xfs_alert_fsblock_zero(ip, imap);
@@ -77,8 +78,8 @@ xfs_bmbt_to_iomap(
}
iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff);
iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount);
- iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
- iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
+ iomap->bdev = target->bt_bdev;
+ iomap->dax_dev = target->bt_daxdev;
iomap->flags = flags;
if (xfs_ipincount(ip) &&
@@ -94,12 +95,14 @@ xfs_hole_to_iomap(
xfs_fileoff_t offset_fsb,
xfs_fileoff_t end_fsb)
{
+ struct xfs_buftarg *target = xfs_inode_buftarg(ip);
+
iomap->addr = IOMAP_NULL_ADDR;
iomap->type = IOMAP_HOLE;
iomap->offset = XFS_FSB_TO_B(ip->i_mount, offset_fsb);
iomap->length = XFS_FSB_TO_B(ip->i_mount, end_fsb - offset_fsb);
- iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip));
- iomap->dax_dev = xfs_find_daxdev_for_inode(VFS_I(ip));
+ iomap->bdev = target->bt_bdev;
+ iomap->dax_dev = target->bt_daxdev;
}
static inline xfs_fileoff_t
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 329a34af..404f2dd 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1227,7 +1227,7 @@ xfs_inode_supports_dax(
return false;
/* Device has to support DAX too. */
- return xfs_find_daxdev_for_inode(VFS_I(ip)) != NULL;
+ return xfs_inode_buftarg(ip)->bt_daxdev != NULL;
}
STATIC void