Commit 6fac0cb4 authored by Dean Roehrich's avatar Dean Roehrich Committed by Nathan Scott
Browse files

[XFS] coordinate mmap calls with xfs_dm_punch_hole 



SGI-PV: 933551
SGI-Modid: xfs-linux:xfs-kern:190622a

Signed-off-by: default avatarDean Roehrich <roehrich@sgi.com>
Signed-off-by: default avatarNathan Scott <nathans@sgi.com>
parent b74e2159

fs/xfs/linux-2.6/xfs_file.c

+24 −3
Original line number Diff line number Diff line
@@ -57,7 +57,9 @@ 
#include <linux/smp_lock.h>



static struct vm_operations_struct linvfs_file_vm_ops;



#ifdef CONFIG_XFS_DMAPI

static struct vm_operations_struct linvfs_dmapi_file_vm_ops;

#endif



STATIC inline ssize_t

__linvfs_read(
@@ -388,6 +390,14 @@ linvfs_readdir( 
	return -error;

}



#ifdef CONFIG_XFS_DMAPI

STATIC void

linvfs_mmap_close(

	struct vm_area_struct	*vma)

{

	xfs_dm_mm_put(vma);

}

#endif /* CONFIG_XFS_DMAPI */



STATIC int

linvfs_file_mmap(
@@ -399,16 +409,19 @@ linvfs_file_mmap( 
	vattr_t		va = { .va_mask = XFS_AT_UPDATIME };

	int		error;



	vma->vm_ops = &linvfs_file_vm_ops;



	if (vp->v_vfsp->vfs_flag & VFS_DMI) {

		xfs_mount_t	*mp = XFS_VFSTOM(vp->v_vfsp);



		error = -XFS_SEND_MMAP(mp, vma, 0);

		if (error)

			return error;

#ifdef CONFIG_XFS_DMAPI

		vma->vm_ops = &linvfs_dmapi_file_vm_ops;

#endif

	}



	vma->vm_ops = &linvfs_file_vm_ops;



	VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error);

	if (!error)

		vn_revalidate(vp);	/* update Linux inode flags */
@@ -609,7 +622,15 @@ struct file_operations linvfs_dir_operations = { 
static struct vm_operations_struct linvfs_file_vm_ops = {

	.nopage		= filemap_nopage,

	.populate	= filemap_populate,

};



#ifdef CONFIG_XFS_DMAPI

static struct vm_operations_struct linvfs_dmapi_file_vm_ops = {

	.close		= linvfs_mmap_close,

	.nopage		= filemap_nopage,

	.populate	= filemap_populate,

#ifdef HAVE_VMOP_MPROTECT

	.mprotect	= linvfs_mprotect,

#endif

};

#endif /* CONFIG_XFS_DMAPI */

fs/xfs/xfs_dmapi.h

+4 −0
Original line number Diff line number Diff line
@@ -209,4 +209,8 @@ void xfs_dm_exit(struct file_system_type *); 
#define XFS_DM_EXIT(fstype)

#endif



#define HAVE_XFS_DM_MM

int xfs_dm_mm_get(struct vm_area_struct *vma);

void xfs_dm_mm_put(struct vm_area_struct *vma);



#endif  /* __XFS_DMAPI_H__ */