Introduce a new mutex lock for shrinkfs which is same to growfs.
Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>
---
fs/xfs/xfs_mount.h | 1 +
fs/xfs/xfs_super.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 4fe2232..9eaea5a 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -161,6 +161,7 @@ typedef struct xfs_mount {
struct radix_tree_root m_perag_tree; /* per-ag accounting info */
spinlock_t m_perag_lock; /* lock for m_perag_tree */
struct mutex m_growlock; /* growfs mutex */
+ struct mutex m_shrinklock; /* shrinkfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
__uint64_t m_flags; /* global mount flags */
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index e01f64c..81b6b60 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1330,6 +1330,7 @@ xfs_fs_fill_super(
spin_lock_init(&mp->m_sb_lock);
mutex_init(&mp->m_growlock);
+ mutex_init(&mp->m_shrinklock);
atomic_set(&mp->m_active_trans, 0);
mp->m_super = sb;
--
1.7.4.1
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