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| author | Christoph Hellwig <hch@infradead.org> | 2012-02-20 02:31:25 +0000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-02-22 22:19:53 -0600 |
| commit | 28496968a6ac37c8b8c44b5156e633c581bb8378 (patch) | |
| tree | 4e0c38612e2718e87219e00b7a3152d53393d145 /fs/xfs/xfs_log_priv.h | |
| parent | 14a7235fba4302a82d61150eda92ec90d3ae9cfb (diff) | |
| download | blackbird-op-linux-28496968a6ac37c8b8c44b5156e633c581bb8378.tar.gz blackbird-op-linux-28496968a6ac37c8b8c44b5156e633c581bb8378.zip | |
xfs: add the xlog_grant_head structure
Add a new data structure to allow sharing code between the log grant and
regrant code.
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_log_priv.h')
| -rw-r--r-- | fs/xfs/xfs_log_priv.h | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index d8c5e47bbc2f..eba4ec925a45 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -470,6 +470,16 @@ struct xfs_cil { #define XLOG_CIL_HARD_SPACE_LIMIT(log) (3 * (log->l_logsize >> 4)) /* + * ticket grant locks, queues and accounting have their own cachlines + * as these are quite hot and can be operated on concurrently. + */ +struct xlog_grant_head { + spinlock_t lock ____cacheline_aligned_in_smp; + struct list_head waiters; + atomic64_t grant; +}; + +/* * The reservation head lsn is not made up of a cycle number and block number. * Instead, it uses a cycle number and byte number. Logs don't expect to * overflow 31 bits worth of byte offset, so using a byte number will mean @@ -520,17 +530,8 @@ typedef struct log { /* lsn of 1st LR with unflushed * buffers */ atomic64_t l_tail_lsn ____cacheline_aligned_in_smp; - /* - * ticket grant locks, queues and accounting have their own cachlines - * as these are quite hot and can be operated on concurrently. - */ - spinlock_t l_grant_reserve_lock ____cacheline_aligned_in_smp; - struct list_head l_reserveq; - atomic64_t l_grant_reserve_head; - - spinlock_t l_grant_write_lock ____cacheline_aligned_in_smp; - struct list_head l_writeq; - atomic64_t l_grant_write_head; + struct xlog_grant_head l_reserve_head; + struct xlog_grant_head l_write_head; /* The following field are used for debugging; need to hold icloglock */ #ifdef DEBUG |
