diff options
Diffstat (limited to 'fs/xfs/xfs_mount.h')
-rw-r--r-- | fs/xfs/xfs_mount.h | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index b36676c..041d949 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -57,10 +57,16 @@ enum { #define XFS_ERR_RETRY_FOREVER -1 +/* + * Although retry_timeout is in jiffies which is normally an unsigned long, + * we limit the retry timeout to 86400 seconds, or one day. So even a + * signed 32-bit long is sufficient for a HZ value up to 24855. Making it + * signed lets us store the special "-1" value, meaning retry forever. + */ struct xfs_error_cfg { struct xfs_kobj kobj; int max_retries; - unsigned long retry_timeout; /* in jiffies, 0 = no timeout */ + long retry_timeout; /* in jiffies, -1 = infinite */ }; typedef struct xfs_mount { @@ -325,6 +331,22 @@ xfs_mp_fail_writes(struct xfs_mount *mp) } #endif +/* per-AG block reservation data structures*/ +enum xfs_ag_resv_type { + XFS_AG_RESV_NONE = 0, + XFS_AG_RESV_METADATA, + XFS_AG_RESV_AGFL, +}; + +struct xfs_ag_resv { + /* number of blocks originally reserved here */ + xfs_extlen_t ar_orig_reserved; + /* number of blocks reserved here */ + xfs_extlen_t ar_reserved; + /* number of blocks originally asked for */ + xfs_extlen_t ar_asked; +}; + /* * Per-ag incore structure, copies of information in agf and agi, to improve the * performance of allocation group selection. @@ -372,8 +394,28 @@ typedef struct xfs_perag { /* for rcu-safe freeing */ struct rcu_head rcu_head; int pagb_count; /* pagb slots in use */ + + /* Blocks reserved for all kinds of metadata. */ + struct xfs_ag_resv pag_meta_resv; + /* Blocks reserved for just AGFL-based metadata. */ + struct xfs_ag_resv pag_agfl_resv; } xfs_perag_t; +static inline struct xfs_ag_resv * +xfs_perag_resv( + struct xfs_perag *pag, + enum xfs_ag_resv_type type) +{ + switch (type) { + case XFS_AG_RESV_METADATA: + return &pag->pag_meta_resv; + case XFS_AG_RESV_AGFL: + return &pag->pag_agfl_resv; + default: + return NULL; + } +} + extern void xfs_uuid_table_free(void); extern int xfs_log_sbcount(xfs_mount_t *); extern __uint64_t xfs_default_resblks(xfs_mount_t *mp); |