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xfs: abstract block export operations from nfsd layouts

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Instead of creeping pnfs layout configuration into filesystems, move the
definition of block-based export operations under a more abstract
configuration.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Benjamin Coddington 2016-07-08 09:53:20 -04:00 committed by J. Bruce Fields
parent f4a4906e56
commit 15d66ac209
5 changed files with 12 additions and 5 deletions
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6
fs/Kconfig
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@ -67,6 +67,12 @@ config FS_POSIX_ACL
config EXPORTFS
tristate
config EXPORTFS_BLOCK_OPS
bool "Enable filesystem export operations for block IO"
help
This option enables the export operations for a filesystem to support
external block IO.
config FILE_LOCKING
bool "Enable POSIX file locking API" if EXPERT
default y

2
fs/nfsd/Kconfig
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@ -90,6 +90,7 @@ config NFSD_BLOCKLAYOUT
bool "NFSv4.1 server support for pNFS block layouts"
depends on NFSD_V4 && BLOCK
select NFSD_PNFS
select EXPORTFS_BLOCK_OPS
help
This option enables support for the exporting pNFS block layouts
in the kernel's NFS server. The pNFS block layout enables NFS
@ -102,6 +103,7 @@ config NFSD_SCSILAYOUT
bool "NFSv4.1 server support for pNFS SCSI layouts"
depends on NFSD_V4 && BLOCK
select NFSD_PNFS
select EXPORTFS_BLOCK_OPS
help
This option enables support for the exporting pNFS SCSI layouts
in the kernel's NFS server. The pNFS SCSI layout enables NFS

3
fs/xfs/Makefile
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@ -121,5 +121,4 @@ xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
xfs-$(CONFIG_NFSD_BLOCKLAYOUT) += xfs_pnfs.o
xfs-$(CONFIG_NFSD_SCSILAYOUT) += xfs_pnfs.o
xfs-$(CONFIG_EXPORTFS_BLOCK_OPS) += xfs_pnfs.o

2
fs/xfs/xfs_export.c
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@ -246,7 +246,7 @@ const struct export_operations xfs_export_operations = {
.fh_to_parent = xfs_fs_fh_to_parent,
.get_parent = xfs_fs_get_parent,
.commit_metadata = xfs_fs_nfs_commit_metadata,
#ifdef CONFIG_NFSD_BLOCKLAYOUT
#ifdef CONFIG_EXPORTFS_BLOCK_OPS
.get_uuid = xfs_fs_get_uuid,
.map_blocks = xfs_fs_map_blocks,
.commit_blocks = xfs_fs_commit_blocks,

4
fs/xfs/xfs_pnfs.h
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@ -1,7 +1,7 @@
#ifndef _XFS_PNFS_H
#define _XFS_PNFS_H 1
#if defined(CONFIG_NFSD_BLOCKLAYOUT) || defined(CONFIG_NFSD_SCSILAYOUT)
#ifdef CONFIG_EXPORTFS_BLOCK_OPS
int xfs_fs_get_uuid(struct super_block *sb, u8 *buf, u32 *len, u64 *offset);
int xfs_fs_map_blocks(struct inode *inode, loff_t offset, u64 length,
struct iomap *iomap, bool write, u32 *device_generation);
@ -15,5 +15,5 @@ xfs_break_layouts(struct inode *inode, uint *iolock, bool with_imutex)
{
return 0;
}
#endif /* CONFIG_NFSD_PNFS */
#endif /* CONFIG_EXPORTFS_BLOCK_OPS */
#endif /* _XFS_PNFS_H */