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ceph: adding new return type vm_fault_t

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Use new return type vm_fault_t for page_mkwrite
and fault handler.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Souptick Joarder 2018-07-23 21:32:24 +05:30 committed by Ilya Dryomov
parent f7e52d8efe
commit 24499847e4
1 changed files with 32 additions and 30 deletions
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62
fs/ceph/addr.c
View file

@ -1429,7 +1429,7 @@ static void ceph_restore_sigs(sigset_t *oldset)
/*
* vm ops
*/
static int ceph_filemap_fault(struct vm_fault *vmf)
static vm_fault_t ceph_filemap_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct inode *inode = file_inode(vma->vm_file);
@ -1437,8 +1437,9 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
struct ceph_file_info *fi = vma->vm_file->private_data;
struct page *pinned_page = NULL;
loff_t off = vmf->pgoff << PAGE_SHIFT;
int want, got, ret;
int want, got, err;
sigset_t oldset;
vm_fault_t ret = VM_FAULT_SIGBUS;
ceph_block_sigs(&oldset);
@ -1450,8 +1451,8 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
want = CEPH_CAP_FILE_CACHE;
got = 0;
ret = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
if (ret < 0)
err = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
if (err < 0)
goto out_restore;
dout("filemap_fault %p %llu~%zd got cap refs on %s\n",
@ -1463,16 +1464,17 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
ceph_add_rw_context(fi, &rw_ctx);
ret = filemap_fault(vmf);
ceph_del_rw_context(fi, &rw_ctx);
dout("filemap_fault %p %llu~%zd drop cap refs %s ret %x\n",
inode, off, (size_t)PAGE_SIZE,
ceph_cap_string(got), ret);
} else
ret = -EAGAIN;
err = -EAGAIN;
dout("filemap_fault %p %llu~%zd dropping cap refs on %s ret %d\n",
inode, off, (size_t)PAGE_SIZE, ceph_cap_string(got), ret);
if (pinned_page)
put_page(pinned_page);
ceph_put_cap_refs(ci, got);
if (ret != -EAGAIN)
if (err != -EAGAIN)
goto out_restore;
/* read inline data */
@ -1480,7 +1482,6 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
/* does not support inline data > PAGE_SIZE */
ret = VM_FAULT_SIGBUS;
} else {
int ret1;
struct address_space *mapping = inode->i_mapping;
struct page *page = find_or_create_page(mapping, 0,
mapping_gfp_constraint(mapping,
@ -1489,32 +1490,32 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
ret = VM_FAULT_OOM;
goto out_inline;
}
ret1 = __ceph_do_getattr(inode, page,
err = __ceph_do_getattr(inode, page,
CEPH_STAT_CAP_INLINE_DATA, true);
if (ret1 < 0 || off >= i_size_read(inode)) {
if (err < 0 || off >= i_size_read(inode)) {
unlock_page(page);
put_page(page);
if (ret1 < 0)
ret = ret1;
if (err == -ENOMEM)
ret = VM_FAULT_OOM;
else
ret = VM_FAULT_SIGBUS;
goto out_inline;
}
if (ret1 < PAGE_SIZE)
zero_user_segment(page, ret1, PAGE_SIZE);
if (err < PAGE_SIZE)
zero_user_segment(page, err, PAGE_SIZE);
else
flush_dcache_page(page);
SetPageUptodate(page);
vmf->page = page;
ret = VM_FAULT_MAJOR | VM_FAULT_LOCKED;
out_inline:
dout("filemap_fault %p %llu~%zd read inline data ret %d\n",
dout("filemap_fault %p %llu~%zd read inline data ret %x\n",
inode, off, (size_t)PAGE_SIZE, ret);
}
out_restore:
ceph_restore_sigs(&oldset);
if (ret < 0)
ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
if (err < 0)
ret = vmf_error(err);
return ret;
}
@ -1522,7 +1523,7 @@ static int ceph_filemap_fault(struct vm_fault *vmf)
/*
* Reuse write_begin here for simplicity.
*/
static int ceph_page_mkwrite(struct vm_fault *vmf)
static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct inode *inode = file_inode(vma->vm_file);
@ -1533,8 +1534,9 @@ static int ceph_page_mkwrite(struct vm_fault *vmf)
loff_t off = page_offset(page);
loff_t size = i_size_read(inode);
size_t len;
int want, got, ret;
int want, got, err;
sigset_t oldset;
vm_fault_t ret = VM_FAULT_SIGBUS;
prealloc_cf = ceph_alloc_cap_flush();
if (!prealloc_cf)
@ -1548,10 +1550,10 @@ static int ceph_page_mkwrite(struct vm_fault *vmf)
lock_page(page);
locked_page = page;
}
ret = ceph_uninline_data(vma->vm_file, locked_page);
err = ceph_uninline_data(vma->vm_file, locked_page);
if (locked_page)
unlock_page(locked_page);
if (ret < 0)
if (err < 0)
goto out_free;
}
@ -1568,9 +1570,9 @@ static int ceph_page_mkwrite(struct vm_fault *vmf)
want = CEPH_CAP_FILE_BUFFER;
got = 0;
ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, off + len,
err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, off + len,
&got, NULL);
if (ret < 0)
if (err < 0)
goto out_free;
dout("page_mkwrite %p %llu~%zd got cap refs on %s\n",
@ -1588,13 +1590,13 @@ static int ceph_page_mkwrite(struct vm_fault *vmf)
break;
}
ret = ceph_update_writeable_page(vma->vm_file, off, len, page);
if (ret >= 0) {
err = ceph_update_writeable_page(vma->vm_file, off, len, page);
if (err >= 0) {
/* success. we'll keep the page locked. */
set_page_dirty(page);
ret = VM_FAULT_LOCKED;
}
} while (ret == -EAGAIN);
} while (err == -EAGAIN);
if (ret == VM_FAULT_LOCKED ||
ci->i_inline_version != CEPH_INLINE_NONE) {
@ -1608,14 +1610,14 @@ static int ceph_page_mkwrite(struct vm_fault *vmf)
__mark_inode_dirty(inode, dirty);
}
dout("page_mkwrite %p %llu~%zd dropping cap refs on %s ret %d\n",
dout("page_mkwrite %p %llu~%zd dropping cap refs on %s ret %x\n",
inode, off, len, ceph_cap_string(got), ret);
ceph_put_cap_refs(ci, got);
out_free:
ceph_restore_sigs(&oldset);
ceph_free_cap_flush(prealloc_cf);
if (ret < 0)
ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
if (err < 0)
ret = vmf_error(err);
return ret;
}