[v3,08/12] fs/xfs: Clarify lockdep dependency for xfs_isilocked()
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Message ID 20200208193445.27421-9-ira.weiny@intel.com
State Not Applicable
Headers show
Series
  • Enable per-file/directory DAX operations V3
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Commit Message

Ira Weiny Feb. 8, 2020, 7:34 p.m. UTC
From: Ira Weiny <ira.weiny@intel.com>

xfs_isilocked() can't work fully without CONFIG_LOCKDEP.  However,
making xfs_isilocked() dependant on CONFIG_LOCKDEP is not feasible
because it is used for more than the i_rwsem.  Therefore a short-circuit
was provided via debug_locks.  However, this caused confusion while
working through the xfs locking.

Rather than use debug_locks as a flag specify this clearly using
IS_ENABLED(CONFIG_LOCKDEP).

Signed-off-by: Ira Weiny <ira.weiny@intel.com>

---
Changes from V2:
	This patch is new for V3

 fs/xfs/xfs_inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c5077e6326c7..35df324875db 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -364,7 +364,7 @@  xfs_isilocked(
 
 	if (lock_flags & (XFS_IOLOCK_EXCL|XFS_IOLOCK_SHARED)) {
 		if (!(lock_flags & XFS_IOLOCK_SHARED))
-			return !debug_locks ||
+			return !IS_ENABLED(CONFIG_LOCKDEP) ||
 				lockdep_is_held_type(&VFS_I(ip)->i_rwsem, 0);
 		return rwsem_is_locked(&VFS_I(ip)->i_rwsem);
 	}