fs/ntfs3: Keep runs for $MFT::$ATTR_DATA and $MFT::$ATTR_BITMAP

aalexandrovich · aalexandrovich · commit eb95678ee930 · 2024-07-11T12:19:43.000+03:00
We skip the run_truncate_head call also for $MFT::$ATTR_BITMAP. Otherwise wnd_map()/run_lookup_entry will not find the disk position for the bitmap parts. Fixes: 0e5b044 ("fs/ntfs3: Refactoring attr_set_size to restore after errors") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
@@ -672,7 +672,8 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,
 			goto undo_2;
 		}
 
-		if (!is_mft)
+		/* keep runs for $MFT::$ATTR_DATA and $MFT::$ATTR_BITMAP. */
+		if (ni->mi.rno != MFT_REC_MFT)
 			run_truncate_head(run, evcn + 1);
 
 		svcn = le64_to_cpu(attr->nres.svcn);

Original file line number	Diff line number	Diff line change
`@@ -672,7 +672,8 @@ int attr_set_size(struct ntfs_inode *ni, enum ATTR_TYPE type,`
`672`	`672`	`goto undo_2;`
`673`	`673`	`}`
`674`	`674`
`675`		`- if (!is_mft)`
	`675`	`+ /* keep runs for $MFT::$ATTR_DATA and $MFT::$ATTR_BITMAP. */`
	`676`	`+ if (ni->mi.rno != MFT_REC_MFT)`
`676`	`677`	`run_truncate_head(run, evcn + 1);`
`677`	`678`
`678`	`679`	`svcn = le64_to_cpu(attr->nres.svcn);`