[PATCH v4 11/12] xfs: use struct iomap based DAX PMD fault path

Ross Zwisler
2016-09-29T22:50:20Z

Switch xfs_filemap_pmd_fault() from using dax_pmd_fault() to the new and
improved dax_iomap_pmd_fault(). Also, now that it has no more users,
remove xfs_get_blocks_dax_fault().

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
---
fs/xfs/xfs_aops.c | 25 +++++--------------------
fs/xfs/xfs_aops.h | 3 ---
fs/xfs/xfs_file.c | 2 +-
3 files changed, 6 insertions(+), 24 deletions(-)

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 4a28fa9..39c754f 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1170,8 +1170,7 @@ __xfs_get_blocks(
sector_t iblock,
struct buffer_head *bh_result,
int create,
- bool direct,
- bool dax_fault)
+ bool direct)
{
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
@@ -1265,12 +1264,8 @@ __xfs_get_blocks(
if (ISUNWRITTEN(&imap))
set_buffer_unwritten(bh_result);
/* direct IO needs special help */
- if (create) {
- if (dax_fault)
- ASSERT(!ISUNWRITTEN(&imap));
- else
- xfs_map_direct(inode, bh_result, &imap, offset);
- }
+ if (create)
+ xfs_map_direct(inode, bh_result, &imap, offset);
}

/*
@@ -1310,7 +1305,7 @@ xfs_get_blocks(
struct buffer_head *bh_result,
int create)
{
- return __xfs_get_blocks(inode, iblock, bh_result, create, false, false);
+ return __xfs_get_blocks(inode, iblock, bh_result, create, false);
}

int
@@ -1320,17 +1315,7 @@ xfs_get_blocks_direct(
struct buffer_head *bh_result,
int create)
{
- return __xfs_get_blocks(inode, iblock, bh_result, create, true, false);
-}
-
-int
-xfs_get_blocks_dax_fault(
- struct inode *inode,
- sector_t iblock,
- struct buffer_head *bh_result,
- int create)
-{
- return __xfs_get_blocks(inode, iblock, bh_result, create, true, true);
+ return __xfs_get_blocks(inode, iblock, bh_result, create, true);
}

/*
diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
index 1950e3b..6779e9d 100644
--- a/fs/xfs/xfs_aops.h
+++ b/fs/xfs/xfs_aops.h
@@ -57,9 +57,6 @@ int xfs_get_blocks(struct inode *inode, sector_t offset,
struct buffer_head *map_bh, int create);
int xfs_get_blocks_direct(struct inode *inode, sector_t offset,
struct buffer_head *map_bh, int create);
-int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset,
- struct buffer_head *map_bh, int create);
-
int xfs_end_io_direct_write(struct kiocb *iocb, loff_t offset,
ssize_t size, void *private);
int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size);
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 00293d2..ab8f652 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -1539,7 +1539,7 @@ xfs_filemap_pmd_fault(
}

xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
- ret = dax_pmd_fault(vma, addr, pmd, flags, xfs_get_blocks_dax_fault);
+ ret = dax_iomap_pmd_fault(vma, addr, pmd, flags, &xfs_iomap_ops);
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);

if (flags & FAULT_FLAG_WRITE)
--
2.7.4