[PATCH] xfs: return when delta equals 0 in xfs_mod_freecounter

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There are cases that xfs_mod_freecounter() will get called when delta
equals 0 while it's unnecessary.

Signed-off-by: Shida Zhang <zhangshida@xxxxxxxxxx>
---
 fs/xfs/xfs_mount.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index daa8d29c46b4..a3db932fd1fc 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1129,6 +1129,9 @@ xfs_mod_freecounter(
 	if (rsvd)
 		ASSERT(has_resv_pool);
 
+	if (delta == 0)
+		return 0;
+
 	if (delta > 0) {
 		/*
 		 * If the reserve pool is depleted, put blocks back into it
-- 
2.25.1




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