On an error return from fscrypt_decrypt_page(), ext4_block_write_begin()
can return with the page's buffer_head marked with BH_Uptodate
flag. This commit clears the BH_Uptodate flag in such cases.
Signed-off-by: Chandan Rajendra <chan...@linux.ibm.com>
---
fs/ext4/inode.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 3c2e7f5a6c84..05b258db8673 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1225,11 +1225,15 @@ static int ext4_block_write_begin(struct page *page,
loff_t pos, unsigned len,
if (!buffer_uptodate(*wait_bh))
err = -EIO;
}
- if (unlikely(err))
+ if (unlikely(err)) {
page_zero_new_buffers(page, from, to);
- else if (decrypt)
+ } else if (decrypt) {
err = fscrypt_decrypt_page(page->mapping->host, page,
PAGE_SIZE, 0, page->index);
+ if (err)
+ clear_buffer_uptodate(*wait_bh);
+ }
+
return err;
}
#endif
--
2.19.1
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