Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_file.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index a7d8324b59c5..4d955b3266df 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -898,6 +898,39 @@ xfs_file_dedupe_range(
return len;
}
+static uint16_t
+xfs_dio_alignment(struct file *file)
+{
+ struct xfs_inode *ip = XFS_I(file_inode(file));
+ struct xfs_mount *mp = ip->i_mount;
+
+ if (file->f_flags & O_ATOMIC)
+ return mp->m_sb.sb_blocksize;
+ else if (XFS_IS_REALTIME_INODE(ip))
+ return mp->m_rtdev_targp->bt_logical_sectorsize;
+ else
+ return mp->m_ddev_targp->bt_logical_sectorsize;
+}
+
+static int
+xfs_file_ioinfo(
+ struct file *file,
+ struct fcntl_ioinfo *fio)
+{
+ if (file->f_flags & O_DIRECT)
+ fio->fio_alignment = xfs_dio_alignment(file);
+
+ if (file->f_flags & O_ATOMIC) {
+ fio->fio_flags = FIO_FL_ATOMIC_OSYNC | FIO_FL_ATOMIC_FSYNC;
+ fio->fio_max_atomic = INT_MAX;
+ if (fio->fio_alignment)
+ fio->fio_max_atomic &= ~(fio->fio_alignment - 1);
+ }
+
+
+ return 0;
+};
+
STATIC int
xfs_file_open(
struct inode *inode,
@@ -1556,6 +1589,7 @@ const struct file_operations xfs_file_operations = {
.fallocate = xfs_file_fallocate,
.clone_file_range = xfs_file_clone_range,
.dedupe_file_range = xfs_file_dedupe_range,
+ .ioinfo = xfs_file_ioinfo,
};
const struct file_operations xfs_dir_file_operations = {
--
2.11.0
--
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