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[XFS] coordinate mmap calls with xfs_dm_punch_hole 

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

Signed-off-by: Dean Roehrich <roehrich@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Dean Roehrich 2005-06-21 14:07:45 +10:00 committed by Nathan Scott
parent b74e2159c9
commit 6fac0cb46b
2 changed files with 28 additions and 3 deletions
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27
fs/xfs/linux-2.6/xfs_file.c
View File

@ -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 @@ done:
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 */

4
fs/xfs/xfs_dmapi.h
View File

@ -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__ */