| Message ID | 20150316044320.23648.64885.stgit@notabene.brown (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 0d8abd6364d9..6a1094e493e9 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -185,6 +185,8 @@ typedef struct xfs_mount { * to various other kinds of pain inflicted on the pNFS server. */ __uint32_t m_generation; + + struct rcu_head m_rcu; } xfs_mount_t; /* diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 8fcc4ccc5c79..3827be14383c 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1047,7 +1047,7 @@ xfs_fs_put_super( xfs_destroy_mount_workqueues(mp); xfs_close_devices(mp); xfs_free_fsname(mp); - kfree(mp); + kfree_rcu(mp, m_rcu); } STATIC int
In order for ->follow_link to be safe in RCU-walk, any data structures accessed need to be freed after an RCU grace period. 'struct xfs_mount' is not currently guaranteed to be delayed sufficiently, so use kfree_rcu() to free it. Signed-off-by: NeilBrown <neilb@suse.de> --- fs/xfs/xfs_mount.h | 2 ++ fs/xfs/xfs_super.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html