qstr: constify instances in nfs

[cascardo/linux.git] / fs / xfs / xfs_mount.h

diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index eafe257..c1b798c 100644 (file)
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -37,6 +37,32 @@ enum {
        XFS_LOWSP_MAX,
 };
 
+/*
+ * Error Configuration
+ *
+ * Error classes define the subsystem the configuration belongs to.
+ * Error numbers define the errors that are configurable.
+ */
+enum {
+       XFS_ERR_METADATA,
+       XFS_ERR_CLASS_MAX,
+};
+enum {
+       XFS_ERR_DEFAULT,
+       XFS_ERR_EIO,
+       XFS_ERR_ENOSPC,
+       XFS_ERR_ENODEV,
+       XFS_ERR_ERRNO_MAX,
+};
+
+#define XFS_ERR_RETRY_FOREVER  -1
+
+struct xfs_error_cfg {
+       struct xfs_kobj kobj;
+       int             max_retries;
+       unsigned long   retry_timeout;  /* in jiffies, 0 = no timeout */
+};
+
 typedef struct xfs_mount {
        struct super_block      *m_super;
        xfs_tid_t               m_tid;          /* next unused tid for fs */
@@ -127,6 +153,9 @@ typedef struct xfs_mount {
        int64_t                 m_low_space[XFS_LOWSP_MAX];
                                                /* low free space thresholds */
        struct xfs_kobj         m_kobj;
+       struct xfs_kobj         m_error_kobj;
+       struct xfs_kobj         m_error_meta_kobj;
+       struct xfs_error_cfg    m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX];
        struct xstats           m_stats;        /* per-fs stats */
 
        struct workqueue_struct *m_buf_workqueue;
@@ -148,6 +177,7 @@ typedef struct xfs_mount {
         */
        __uint32_t              m_generation;
 
+       bool                    m_fail_unmount;
 #ifdef DEBUG
        /*
         * DEBUG mode instrumentation to test and/or trigger delayed allocation
@@ -166,6 +196,7 @@ typedef struct xfs_mount {
 #define XFS_MOUNT_WSYNC                (1ULL << 0)     /* for nfs - all metadata ops
                                                   must be synchronous except
                                                   for space allocations */
+#define XFS_MOUNT_UNMOUNTING   (1ULL << 1)     /* filesystem is unmounting */
 #define XFS_MOUNT_WAS_CLEAN    (1ULL << 3)
 #define XFS_MOUNT_FS_SHUTDOWN  (1ULL << 4)     /* atomic stop of all filesystem
                                                   operations, typically for
@@ -364,4 +395,7 @@ extern void xfs_set_low_space_thresholds(struct xfs_mount *);
 int    xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,
                        xfs_off_t count_fsb);
 
+struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp,
+               int error_class, int error);
+
 #endif /* __XFS_MOUNT_H__ */