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-rw-r--r--fs/nilfs2/inode.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 6b49f14eac8..cf02f553071 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -175,6 +175,11 @@ static int nilfs_writepages(struct address_space *mapping,
struct inode *inode = mapping->host;
int err = 0;
+ if (inode->i_sb->s_flags & MS_RDONLY) {
+ nilfs_clear_dirty_pages(mapping, false);
+ return -EROFS;
+ }
+
if (wbc->sync_mode == WB_SYNC_ALL)
err = nilfs_construct_dsync_segment(inode->i_sb, inode,
wbc->range_start,
@@ -187,6 +192,18 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
struct inode *inode = page->mapping->host;
int err;
+ if (inode->i_sb->s_flags & MS_RDONLY) {
+ /*
+ * It means that filesystem was remounted in read-only
+ * mode because of error or metadata corruption. But we
+ * have dirty pages that try to be flushed in background.
+ * So, here we simply discard this dirty page.
+ */
+ nilfs_clear_dirty_page(page, false);
+ unlock_page(page);
+ return -EROFS;
+ }
+
redirty_page_for_writepage(wbc, page);
unlock_page(page);