[PATCH] fs/ntfs3: Make ntfs_fallocate return -ENOSPC instead of -EFBIG

[Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>]

In some cases we need to return ENOSPC
Fixes xfstest generic/213
Fixes: 114346978cf6 ("fs/ntfs3: Check new size for limits")

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
---
 fs/ntfs3/file.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
index de37d5c1d60b..8fb67bdc81e5 100644
--- a/fs/ntfs3/file.c
+++ b/fs/ntfs3/file.c
@@ -670,6 +670,19 @@ static long ntfs_fallocate(struct file *file, int mode, loff_t vbo, loff_t len)
 		ni_unlock(ni);
 	} else {
 		/* Check new size. */
+
+		/* generic/213: expected -ENOSPC instead of -EFBIG. */
+		if (!is_supported_holes) {
+			loff_t to_alloc = new_size - inode_get_bytes(inode);
+
+			if (to_alloc > 0 &&
+			    (to_alloc >> sbi->cluster_bits) >
+				    wnd_zeroes(&sbi->used.bitmap)) {
+				err = -ENOSPC;
+				goto out;
+			}
+		}
+
 		err = inode_newsize_ok(inode, new_size);
 		if (err)
 			goto out;
--
2.36.1