NTFS: Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_reinit_search_ctx() where

      we did not clear ctx->al_entry but it was still set due to changes in
      ntfs_attr_lookup() and ntfs_external_attr_find() in particular.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

Documentation/filesystems/ntfs.txt

@@ -277,6 +277,8 @@ ChangeLog
 
 Note, a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
 
+2.1.20:
+	- Fix a stupid bug introduced in 2.1.18 release.
 2.1.19:
 	- Minor bugfix in handling of the default upcase table.
 	- Many internal cleanups and improvements.  Many thanks to Linus

fs/ntfs/ChangeLog

@@ -21,6 +21,13 @@ ToDo/Notes:
 	- Enable the code for setting the NT4 compatibility flag when we start
 	  making NTFS 1.2 specific modifications.
 
+2.1.20 - Fix a stupid bug in ntfs_attr_reinit_search_ctx().
+
+	- Fix stupid bug in fs/ntfs/attrib.c::ntfs_attr_reinit_search_ctx()
+	  where we did not clear ctx->al_entry but it was still set due to
+	  changes in ntfs_attr_lookup() and ntfs_external_attr_find() in
+	  particular.
+
 2.1.19 - Many cleanups, improvements, and a minor bug fix.
 
 	- Update ->setattr (fs/ntfs/inode.c::ntfs_setattr()) to refuse to

fs/ntfs/Makefile

@@ -6,7 +6,7 @@ ntfs-objs := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
 	     index.o inode.o mft.o mst.o namei.o super.o sysctl.o unistr.o \
 	     upcase.o
 
-EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.19\"
+EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.20\"
 
 ifeq ($(CONFIG_NTFS_DEBUG),y)
 EXTRA_CFLAGS += -DDEBUG

fs/ntfs/attrib.c

@@ -1861,6 +1861,11 @@ void ntfs_attr_reinit_search_ctx(ntfs_attr_search_ctx *ctx)
 		/* Sanity checks are performed elsewhere. */
 		ctx->attr = (ATTR_RECORD*)((u8*)ctx->mrec +
 				le16_to_cpu(ctx->mrec->attrs_offset));
+		/*
+		 * This needs resetting due to ntfs_external_attr_find() which
+		 * can leave it set despite having zeroed ctx->base_ntfs_ino.
+		 */
+		ctx->al_entry = NULL;
 		return;
 	} /* Attribute list. */
 	if (ctx->ntfs_ino != ctx->base_ntfs_ino)