summaryrefslogtreecommitdiff
path: root/mm/filemap.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 51efee65c2cc..fa5ca304148e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1718,6 +1718,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
struct inode *inode = vma->vm_file->f_path.dentry->d_inode;
int ret = VM_FAULT_LOCKED;
+ sb_start_pagefault(inode->i_sb);
file_update_time(vma->vm_file);
lock_page(page);
if (page->mapping != inode->i_mapping) {
@@ -1725,7 +1726,14 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
ret = VM_FAULT_NOPAGE;
goto out;
}
+ /*
+ * We mark the page dirty already here so that when freeze is in
+ * progress, we are guaranteed that writeback during freezing will
+ * see the dirty page and writeprotect it again.
+ */
+ set_page_dirty(page);
out:
+ sb_end_pagefault(inode->i_sb);
return ret;
}
EXPORT_SYMBOL(filemap_page_mkwrite);
@@ -2426,8 +2434,6 @@ ssize_t __generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
count = ocount;
pos = *ppos;
- vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
-
/* We can write back this queue in page reclaim */
current->backing_dev_info = mapping->backing_dev_info;
written = 0;
@@ -2526,6 +2532,7 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
BUG_ON(iocb->ki_pos != pos);
+ sb_start_write(inode->i_sb);
mutex_lock(&inode->i_mutex);
blk_start_plug(&plug);
ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos);
@@ -2539,6 +2546,7 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
ret = err;
}
blk_finish_plug(&plug);
+ sb_end_write(inode->i_sb);
return ret;
}
EXPORT_SYMBOL(generic_file_aio_write);