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Diffstat (limited to 'fs/gfs2/ops_vm.c')
-rw-r--r--fs/gfs2/ops_vm.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/fs/gfs2/ops_vm.c b/fs/gfs2/ops_vm.c
index e9fe6eb74e75..dc287d2e3a66 100644
--- a/fs/gfs2/ops_vm.c
+++ b/fs/gfs2/ops_vm.c
@@ -27,13 +27,12 @@
#include "trans.h"
#include "util.h"
-static struct page *gfs2_private_fault(struct vm_area_struct *vma,
- struct fault_data *fdata)
+static int gfs2_private_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct gfs2_inode *ip = GFS2_I(vma->vm_file->f_mapping->host);
set_bit(GIF_PAGED, &ip->i_flags);
- return filemap_fault(vma, fdata);
+ return filemap_fault(vma, vmf);
}
static int alloc_page_backing(struct gfs2_inode *ip, struct page *page)
@@ -104,55 +103,55 @@ out:
return error;
}
-static struct page *gfs2_sharewrite_fault(struct vm_area_struct *vma,
- struct fault_data *fdata)
+static int gfs2_sharewrite_fault(struct vm_area_struct *vma,
+ struct vm_fault *vmf)
{
struct file *file = vma->vm_file;
struct gfs2_file *gf = file->private_data;
struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
struct gfs2_holder i_gh;
- struct page *result = NULL;
int alloc_required;
int error;
+ int ret = VM_FAULT_MINOR;
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
if (error)
- return NULL;
+ goto out;
set_bit(GIF_PAGED, &ip->i_flags);
set_bit(GIF_SW_PAGED, &ip->i_flags);
error = gfs2_write_alloc_required(ip,
- (u64)fdata->pgoff << PAGE_CACHE_SHIFT,
+ (u64)vmf->pgoff << PAGE_CACHE_SHIFT,
PAGE_CACHE_SIZE, &alloc_required);
if (error) {
- fdata->type = VM_FAULT_OOM; /* XXX: are these right? */
- goto out;
+ ret = VM_FAULT_OOM; /* XXX: are these right? */
+ goto out_unlock;
}
set_bit(GFF_EXLOCK, &gf->f_flags);
- result = filemap_fault(vma, fdata);
+ ret = filemap_fault(vma, vmf);
clear_bit(GFF_EXLOCK, &gf->f_flags);
- if (!result)
- goto out;
+ if (ret & (VM_FAULT_ERROR | FAULT_RET_NOPAGE))
+ goto out_unlock;
if (alloc_required) {
- error = alloc_page_backing(ip, result);
+ /* XXX: do we need to drop page lock around alloc_page_backing?*/
+ error = alloc_page_backing(ip, vmf->page);
if (error) {
- if (vma->vm_flags & VM_CAN_INVALIDATE)
- unlock_page(result);
- page_cache_release(result);
- fdata->type = VM_FAULT_OOM;
- result = NULL;
- goto out;
+ if (ret & FAULT_RET_LOCKED)
+ unlock_page(vmf->page);
+ page_cache_release(vmf->page);
+ ret = VM_FAULT_OOM;
+ goto out_unlock;
}
- set_page_dirty(result);
+ set_page_dirty(vmf->page);
}
-out:
+out_unlock:
gfs2_glock_dq_uninit(&i_gh);
-
- return result;
+out:
+ return ret;
}
struct vm_operations_struct gfs2_vm_ops_private = {