xfs: use %px for data pointers when debugging
Starting with commit 57e734423ad ("vsprintf: refactor %pK code out of
pointer"), the behavior of the raw '%p' printk format specifier was
changed to print a 32-bit hash of the pointer value to avoid leaking
kernel pointers into dmesg. For most situations that's good.
This is /undesirable/ behavior when we're trying to debug XFS, however,
so define a PTR_FMT that prints the actual pointer when we're in debug
mode.
Note that %p for tracepoints still prints the raw pointer, so in the
long run we could consider rewriting some of these messages as
tracepoints.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index cc86b2b..8b45456 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -878,7 +878,7 @@ xfs_do_force_shutdown(
if (!(flags & SHUTDOWN_FORCE_UMOUNT)) {
xfs_notice(mp,
- "%s(0x%x) called from line %d of file %s. Return address = %p",
+ "%s(0x%x) called from line %d of file %s. Return address = "PTR_FMT,
__func__, flags, lnnum, fname, __return_address);
}
/*