linux-kernel - [PATCH 4/4] fs/ntfs3: Update valid size if -EIOCBQUEUED

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Message-ID: <600c92df-35e9-2686-52f3-5129ccf30e5e@paragon-software.com>
Date:   Mon, 25 Oct 2021 19:59:56 +0300
From:   Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
To:     <ntfs3@...ts.linux.dev>
CC:     <linux-kernel@...r.kernel.org>, <linux-fsdevel@...r.kernel.org>
Subject: [PATCH 4/4] fs/ntfs3: Update valid size if -EIOCBQUEUED

Update valid size if write is still in I/O queue.
Fixes xfstest generic/240
Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
---
 fs/ntfs3/inode.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 859951d785cb..c211c64e6b17 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -757,6 +757,7 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 	loff_t vbo = iocb->ki_pos;
 	loff_t end;
 	int wr = iov_iter_rw(iter) & WRITE;
+	size_t iter_count = iov_iter_count(iter);
 	loff_t valid;
 	ssize_t ret;
 
@@ -770,10 +771,14 @@ static ssize_t ntfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
 				 wr ? ntfs_get_block_direct_IO_W
 				    : ntfs_get_block_direct_IO_R);
 
-	if (ret <= 0)
+	if (ret > 0)
+		end = vbo + ret;
+	else if (wr && -EIOCBQUEUED == ret)
+		end = vbo + iter_count;
+	else {
 		goto out;
+	}
 
-	end = vbo + ret;
 	valid = ni->i_valid;
 	if (wr) {
 		if (end > valid && !S_ISBLK(inode->i_mode)) {
-- 
2.33.0