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Subject[PATCH v4 06/12] ext2, dax: replace IS_DAX() with IS_FSDAX()
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Date
In preparation for fixing the broken definition of S_DAX in the
CONFIG_FS_DAX=n + CONFIG_DEV_DAX=y case, convert all IS_DAX() usages to
use explicit tests for FSDAX since DAX is ambiguous.

Cc: Jan Kara <jack@suse.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: <stable@vger.kernel.org>
Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
fs/ext2/file.c | 6 +++---
fs/ext2/inode.c | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 5ac98d074323..702a36df6c01 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -119,7 +119,7 @@ static const struct vm_operations_struct ext2_dax_vm_ops = {

static int ext2_file_mmap(struct file *file, struct vm_area_struct *vma)
{
- if (!IS_DAX(file_inode(file)))
+ if (!IS_FSDAX(file_inode(file)))
return generic_file_mmap(file, vma);

file_accessed(file);
@@ -158,14 +158,14 @@ int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)

static ssize_t ext2_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
- if (IS_DAX(iocb->ki_filp->f_mapping->host))
+ if (IS_FSDAX(iocb->ki_filp->f_mapping->host))
return ext2_dax_read_iter(iocb, to);
return generic_file_read_iter(iocb, to);
}

static ssize_t ext2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
- if (IS_DAX(iocb->ki_filp->f_mapping->host))
+ if (IS_FSDAX(iocb->ki_filp->f_mapping->host))
return ext2_dax_write_iter(iocb, from);
return generic_file_write_iter(iocb, from);
}
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index e04295e99d90..72284f9fd034 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -733,7 +733,7 @@ static int ext2_get_blocks(struct inode *inode,
goto cleanup;
}

- if (IS_DAX(inode)) {
+ if (IS_FSDAX(inode)) {
/*
* We must unmap blocks before zeroing so that writeback cannot
* overwrite zeros with stale data from block device page cache.
@@ -940,7 +940,7 @@ ext2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
loff_t offset = iocb->ki_pos;
ssize_t ret;

- if (WARN_ON_ONCE(IS_DAX(inode)))
+ if (WARN_ON_ONCE(IS_FSDAX(inode)))
return -EIO;

ret = blockdev_direct_IO(iocb, inode, iter, ext2_get_block);
@@ -1294,7 +1294,7 @@ static int ext2_setsize(struct inode *inode, loff_t newsize)

inode_dio_wait(inode);

- if (IS_DAX(inode)) {
+ if (IS_FSDAX(inode)) {
error = iomap_zero_range(inode, newsize,
PAGE_ALIGN(newsize) - newsize, NULL,
&ext2_iomap_ops);
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