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ZIL: Reduce scope of per-dataset zl_issuer_lock #14841

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merged 1 commit into from
May 25, 2023
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ZIL: Reduce scope of per-dataset zl_issuer_lock #14841

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7 changes: 5 additions & 2 deletions include/sys/zil_impl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ extern "C" {
* must be held.
*
* After the lwb is "opened", it can transition into the "issued" state
* via zil_lwb_write_issue(). Again, the zilog's "zl_issuer_lock" must
* via zil_lwb_write_close(). Again, the zilog's "zl_issuer_lock" must
* be held when making this transition.
*
* After the lwb's write zio completes, it transitions into the "write
Expand Down Expand Up @@ -93,20 +93,23 @@ typedef struct lwb {
blkptr_t lwb_blk; /* on disk address of this log blk */
boolean_t lwb_fastwrite; /* is blk marked for fastwrite? */
boolean_t lwb_slog; /* lwb_blk is on SLOG device */
boolean_t lwb_indirect; /* do not postpone zil_lwb_commit() */
int lwb_nused; /* # used bytes in buffer */
int lwb_nfilled; /* # filled bytes in buffer */
int lwb_sz; /* size of block and buffer */
lwb_state_t lwb_state; /* the state of this lwb */
char *lwb_buf; /* log write buffer */
zio_t *lwb_write_zio; /* zio for the lwb buffer */
zio_t *lwb_root_zio; /* root zio for lwb write and flushes */
hrtime_t lwb_issued_timestamp; /* when was the lwb issued? */
uint64_t lwb_issued_txg; /* the txg when the write is issued */
uint64_t lwb_max_txg; /* highest txg in this lwb */
list_node_t lwb_node; /* zilog->zl_lwb_list linkage */
list_node_t lwb_issue_node; /* linkage of lwbs ready for issue */
list_t lwb_itxs; /* list of itx's */
list_t lwb_waiters; /* list of zil_commit_waiter's */
avl_tree_t lwb_vdev_tree; /* vdevs to flush after lwb write */
kmutex_t lwb_vdev_lock; /* protects lwb_vdev_tree */
hrtime_t lwb_issued_timestamp; /* when was the lwb issued? */
} lwb_t;

/*
Expand Down
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