diff options
| author | Pete Wyckoff <pw@osc.edu> | 2008-02-26 19:27:53 +0100 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-02-29 22:31:48 +0100 |
| commit | 331552925d17ffa2f5c676e282d4fd37c852d9e3 (patch) | |
| tree | 6dba57eb575399cef6e7498110670209ee99f148 /drivers/infiniband/core/fmr_pool.c | |
| parent | Revert "IB/fmr_pool: ib_fmr_pool_flush() should flush all dirty FMRs" (diff) | |
| download | linux-331552925d17ffa2f5c676e282d4fd37c852d9e3.tar.xz linux-331552925d17ffa2f5c676e282d4fd37c852d9e3.zip | |
IB/fmr_pool: Flush all dirty FMRs from ib_fmr_pool_flush()
Commit a3cd7d90 ("IB/fmr_pool: ib_fmr_pool_flush() should flush all
dirty FMRs") caused a regression for iSER and was reverted in
e5507736.
This change attempts to redo the original patch so that all used FMR
entries are flushed when ib_flush_fmr_pool() is called without
affecting the normal FMR pool cleaning thread. Simply move used
entries from the clean list onto the dirty list in ib_flush_fmr_pool()
before letting the cleanup thread do its job.
Signed-off-by: Pete Wyckoff <pw@osc.edu>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/core/fmr_pool.c')
| -rw-r--r-- | drivers/infiniband/core/fmr_pool.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c index 4044fdf62cc2..06d502c06a4d 100644 --- a/drivers/infiniband/core/fmr_pool.c +++ b/drivers/infiniband/core/fmr_pool.c @@ -398,8 +398,23 @@ EXPORT_SYMBOL(ib_destroy_fmr_pool); */ int ib_flush_fmr_pool(struct ib_fmr_pool *pool) { - int serial = atomic_inc_return(&pool->req_ser); + int serial; + struct ib_pool_fmr *fmr, *next; + + /* + * The free_list holds FMRs that may have been used + * but have not been remapped enough times to be dirty. + * Put them on the dirty list now so that the cleanup + * thread will reap them too. + */ + spin_lock_irq(&pool->pool_lock); + list_for_each_entry_safe(fmr, next, &pool->free_list, list) { + if (fmr->remap_count > 0) + list_move(&fmr->list, &pool->dirty_list); + } + spin_unlock_irq(&pool->pool_lock); + serial = atomic_inc_return(&pool->req_ser); wake_up_process(pool->thread); if (wait_event_interruptible(pool->force_wait, |