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xfs: use a list_head for iclog callbacks

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Replace the hand grown linked list handling and cil context attachment
with the standard list_head structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig
2019-06-28 19:27:34 -07:00
committed by Darrick J. Wong
parent efe2330fdc
commit 89ae379d56
4 changed files with 39 additions and 69 deletions
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10
fs/xfs/xfs_log_priv.h
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@@ -10,7 +10,6 @@ struct xfs_buf;
struct xlog;
struct xlog_ticket;
struct xfs_mount;
struct xfs_log_callback;
/*
* Flags for log structure
@@ -179,8 +178,6 @@ typedef struct xlog_ticket {
* - ic_forcewait is used to implement synchronous forcing of the iclog to disk.
* - ic_next is the pointer to the next iclog in the ring.
* - ic_log is a pointer back to the global log structure.
* - ic_callback is a linked list of callback function/argument pairs to be
* called after an iclog finishes writing.
* - ic_size is the full size of the log buffer, minus the cycle headers.
* - ic_io_size is the size of the currently pending log buffer write, which
* might be smaller than ic_size
@@ -193,7 +190,7 @@ typedef struct xlog_ticket {
* structure cacheline aligned. The following fields can be contended on
* by independent processes:
*
* - ic_callback_*
* - ic_callbacks
* - ic_refcnt
* - fields protected by the global l_icloglock
*
@@ -215,8 +212,7 @@ typedef struct xlog_in_core {
/* Callback structures need their own cacheline */
spinlock_t ic_callback_lock ____cacheline_aligned_in_smp;
struct xfs_log_callback *ic_callback;
struct xfs_log_callback **ic_callback_tail;
struct list_head ic_callbacks;
/* reference counts need their own cacheline */
atomic_t ic_refcnt ____cacheline_aligned_in_smp;
@@ -249,7 +245,7 @@ struct xfs_cil_ctx {
int space_used; /* aggregate size of regions */
struct list_head busy_extents; /* busy extents in chkpt */
struct xfs_log_vec *lv_chain; /* logvecs being pushed */
struct xfs_log_callback log_cb; /* completion callback hook. */
struct list_head iclog_entry;
struct list_head committing; /* ctx committing list */
struct work_struct discard_endio_work;
};