Move xfs_break_layouts() to its own compilation unit so that it can be
used for both pnfs layouts and MAP_DIRECT mappings.
Cc: Jan Kara <jack@xxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
fs/xfs/Kconfig | 4 ++++
fs/xfs/Makefile | 1 +
fs/xfs/xfs_layout.c | 42 ++++++++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_layout.h | 13 +++++++++++++
fs/xfs/xfs_pnfs.c | 30 ------------------------------
fs/xfs/xfs_pnfs.h | 10 ++--------
6 files changed, 62 insertions(+), 38 deletions(-)
create mode 100644 fs/xfs/xfs_layout.c
create mode 100644 fs/xfs/xfs_layout.h
diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
index 1b98cfa342ab..f62fc6629abb 100644
--- a/fs/xfs/Kconfig
+++ b/fs/xfs/Kconfig
@@ -109,3 +109,7 @@ config XFS_ASSERT_FATAL
result in warnings.
This behavior can be modified at runtime via sysfs.
+
+config XFS_LAYOUT
+ def_bool y
+ depends on EXPORTFS_BLOCK_OPS
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index a6e955bfead8..d44135107490 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -135,3 +135,4 @@ xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
xfs-$(CONFIG_EXPORTFS_BLOCK_OPS) += xfs_pnfs.o
+xfs-$(CONFIG_XFS_LAYOUT) += xfs_layout.o
diff --git a/fs/xfs/xfs_layout.c b/fs/xfs/xfs_layout.c
new file mode 100644
index 000000000000..71d95e1a910a
--- /dev/null
+++ b/fs/xfs/xfs_layout.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2014 Christoph Hellwig.
+ */
+#include "xfs.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_sb.h"
+#include "xfs_mount.h"
+#include "xfs_inode.h"
+
+#include <linux/fs.h>
+
+/*
+ * Ensure that we do not have any outstanding pNFS layouts that can be used by
+ * clients to directly read from or write to this inode. This must be called
+ * before every operation that can remove blocks from the extent map.
+ * Additionally we call it during the write operation, where aren't concerned
+ * about exposing unallocated blocks but just want to provide basic
+ * synchronization between a local writer and pNFS clients. mmap writes would
+ * also benefit from this sort of synchronization, but due to the tricky locking
+ * rules in the page fault path we don't bother.
+ */
+int
+xfs_break_layouts(
+ struct inode *inode,
+ uint *iolock)
+{
+ struct xfs_inode *ip = XFS_I(inode);
+ int error;
+
+ ASSERT(xfs_isilocked(ip, XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL));
+
+ while ((error = break_layout(inode, false) == -EWOULDBLOCK)) {
+ xfs_iunlock(ip, *iolock);
+ error = break_layout(inode, true);
+ *iolock = XFS_IOLOCK_EXCL;
+ xfs_ilock(ip, *iolock);
+ }
+
+ return error;
+}
diff --git a/fs/xfs/xfs_layout.h b/fs/xfs/xfs_layout.h
new file mode 100644
index 000000000000..f848ee78cc93
--- /dev/null
+++ b/fs/xfs/xfs_layout.h
@@ -0,0 +1,13 @@
+#ifndef _XFS_LAYOUT_H
+#define _XFS_LAYOUT_H 1
+
+#ifdef CONFIG_XFS_LAYOUT
+int xfs_break_layouts(struct inode *inode, uint *iolock);
+#else
+static inline int
+xfs_break_layouts(struct inode *inode, uint *iolock)
+{
+ return 0;
+}
+#endif /* CONFIG_XFS_LAYOUT */
+#endif /* _XFS_LAYOUT_H */
diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
index 2f2dc3c09ad0..8ec72220e73b 100644
--- a/fs/xfs/xfs_pnfs.c
+++ b/fs/xfs/xfs_pnfs.c
@@ -20,36 +20,6 @@
#include "xfs_pnfs.h"
/*
- * Ensure that we do not have any outstanding pNFS layouts that can be used by
- * clients to directly read from or write to this inode. This must be called
- * before every operation that can remove blocks from the extent map.
- * Additionally we call it during the write operation, where aren't concerned
- * about exposing unallocated blocks but just want to provide basic
- * synchronization between a local writer and pNFS clients. mmap writes would
- * also benefit from this sort of synchronization, but due to the tricky locking
- * rules in the page fault path we don't bother.
- */
-int
-xfs_break_layouts(
- struct inode *inode,
- uint *iolock)
-{
- struct xfs_inode *ip = XFS_I(inode);
- int error;
-
- ASSERT(xfs_isilocked(ip, XFS_IOLOCK_SHARED|XFS_IOLOCK_EXCL));
-
- while ((error = break_layout(inode, false) == -EWOULDBLOCK)) {
- xfs_iunlock(ip, *iolock);
- error = break_layout(inode, true);
- *iolock = XFS_IOLOCK_EXCL;
- xfs_ilock(ip, *iolock);
- }
-
- return error;
-}
-
-/*
* Get a unique ID including its location so that the client can identify
* the exported device.
*/
diff --git a/fs/xfs/xfs_pnfs.h b/fs/xfs/xfs_pnfs.h
index b587cb99b2b7..4135b2482697 100644
--- a/fs/xfs/xfs_pnfs.h
+++ b/fs/xfs/xfs_pnfs.h
@@ -1,19 +1,13 @@
#ifndef _XFS_PNFS_H
#define _XFS_PNFS_H 1
+#include "xfs_layout.h"
+
#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);
int xfs_fs_commit_blocks(struct inode *inode, struct iomap *maps, int nr_maps,
struct iattr *iattr);
-
-int xfs_break_layouts(struct inode *inode, uint *iolock);
-#else
-static inline int
-xfs_break_layouts(struct inode *inode, uint *iolock)
-{
- return 0;
-}
#endif /* CONFIG_EXPORTFS_BLOCK_OPS */
#endif /* _XFS_PNFS_H */
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