chattr: allow clearing the extent flag

In order to support kernels which support conversion of extent-mapped
files to direct/indirect mapped files, remove the sanity check which
prevented clearing the extent flag in chattr.  Kernels which don't
support this will simply give an Operation Not Supported error.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/misc/chattr.c b/misc/chattr.c
index 1b137fe..6bb33e6 100644 (file)
--- a/misc/chattr.c
+++ b/misc/chattr.c
@@ -194,7 +194,6 @@ static int change_attributes(const char * name)
 {
        unsigned long flags;
        STRUCT_STAT     st;
-       int extent_file = 0;
 
        if (LSTAT (name, &st) == -1) {
                if (!silent)
@@ -209,16 +208,7 @@ static int change_attributes(const char * name)
                                        _("while reading flags on %s"), name);
                return -1;
        }
-       if (flags & EXT4_EXTENTS_FL)
-               extent_file = 1;
        if (set) {
-               if (extent_file && !(sf & EXT4_EXTENTS_FL)) {
-                       if (!silent)
-                               com_err(program_name, 0,
-                               _("Clearing extent flag not supported on %s"),
-                                       name);
-                       return -1;
-               }
                if (verbose) {
                        printf (_("Flags of %s set as "), name);
                        print_flags (stdout, sf, 0);
@@ -231,13 +221,6 @@ static int change_attributes(const char * name)
                        flags &= ~rf;
                if (add)
                        flags |= af;
-               if (extent_file && !(flags & EXT4_EXTENTS_FL)) {
-                       if (!silent)
-                               com_err(program_name, 0,
-                               _("Clearing extent flag not supported on %s"),
-                                       name);
-                       return -1;
-               }
                if (verbose) {
                        printf(_("Flags of %s set as "), name);
                        print_flags(stdout, flags, 0);