btrfs/254: correct subject of the relevant kernel patch and add git commit

The top comment of test btrfs/254 mentions a kernel patch with a subject
of:

   "btrfs: harden identification of the stale device"

but that is actually not correct, as the subject was slightly changed when
the patch was picked to:

   "btrfs: harden identification of a stale device"

So fix that by removing the comment and use instead a call to
_fixed_by_kernel_commit, which also allows us to specify git commit id.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/tests/btrfs/254 b/tests/btrfs/254
index ae55ae8ca3a2292487e0d1df42b584cd2f8760ee..a358e374a21aefaf5b9a1c886c936ad8d03752fa 100755 (executable)
--- a/tests/btrfs/254
+++ b/tests/btrfs/254
@@ -7,9 +7,6 @@
 #
 # Test if the kernel can free the stale device entries.
 #
-# Tests bug fixed by the kernel patch:
-#      btrfs: harden identification of the stale device
-#
 . ./common/preamble
 _begin_fstest auto quick volume
 
@@ -42,6 +39,9 @@ _require_scratch_nocheck
 _require_command "$WIPEFS_PROG" wipefs
 _check_minimal_fs_size $((1024 * 1024 * 1024))
 
+_fixed_by_kernel_commit 770c79fb6550 \
+       "btrfs: harden identification of a stale device"
+
 _scratch_dev_pool_get 3
 
 setup_dmdev()