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[XFS] Introduce per-filesystem delwri pagebuf flushing to reduce

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contention between filesystems and prevent deadlocks between filesystems
when a flush dependency exists between them.

SGI-PV: 947098
SGI-Modid: xfs-linux-melb:xfs-kern:24844a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
David Chinner
2006-01-11 15:37:58 +11:00
committed by Nathan Scott
parent 216d3b2acb
commit a6867a6815
2 changed files with 101 additions and 44 deletions
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9
fs/xfs/linux-2.6/xfs_buf.h
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@@ -88,6 +88,15 @@ typedef struct xfs_buftarg {
uint bt_hashmask;
uint bt_hashshift;
xfs_bufhash_t *bt_hash;
/* per device delwri queue */
struct task_struct *bt_task;
struct list_head bt_list;
struct list_head bt_delwrite_queue;
spinlock_t bt_delwrite_lock;
uint bt_flags;
#define BT_FORCE_SLEEP 1
#define BT_FORCE_FLUSH 2
} xfs_buftarg_t;
/*