diff options
author | Christoph Hellwig <hch@infradead.org> | 2012-02-20 02:31:29 +0000 |
---|---|---|
committer | Ben Myers <bpm@sgi.com> | 2012-02-22 22:31:45 -0600 |
commit | e179840d74606ab1935c83fe5ad9d93c95ddc956 (patch) | |
tree | 47899d69dd92e2e804c7cf47f9cc53abdafdf335 /fs | |
parent | 23ee3df349b8b8fd153bd02fccf08b31aec5bce3 (diff) | |
download | linux-e179840d74606ab1935c83fe5ad9d93c95ddc956.tar.bz2 |
xfs: share code for grant head wakeups
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')
-rw-r--r-- | fs/xfs/xfs_log.c | 50 | ||||
-rw-r--r-- | fs/xfs/xfs_trace.h | 1 |
2 files changed, 20 insertions, 31 deletions
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index c2d13827582b..685997548fb8 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -171,49 +171,39 @@ xlog_grant_head_wake_all( spin_unlock(&head->lock); } -STATIC bool -xlog_reserveq_wake( +static inline int +xlog_ticket_reservation( struct log *log, - int *free_bytes) + struct xlog_grant_head *head, + struct xlog_ticket *tic) { - struct xlog_ticket *tic; - int need_bytes; - - list_for_each_entry(tic, &log->l_reserve_head.waiters, t_queue) { + if (head == &log->l_write_head) { + ASSERT(tic->t_flags & XLOG_TIC_PERM_RESERV); + return tic->t_unit_res; + } else { if (tic->t_flags & XLOG_TIC_PERM_RESERV) - need_bytes = tic->t_unit_res * tic->t_cnt; + return tic->t_unit_res * tic->t_cnt; else - need_bytes = tic->t_unit_res; - - if (*free_bytes < need_bytes) - return false; - *free_bytes -= need_bytes; - - trace_xfs_log_grant_wake_up(log, tic); - wake_up_process(tic->t_task); + return tic->t_unit_res; } - - return true; } STATIC bool -xlog_writeq_wake( +xlog_grant_head_wake( struct log *log, + struct xlog_grant_head *head, int *free_bytes) { struct xlog_ticket *tic; int need_bytes; - list_for_each_entry(tic, &log->l_write_head.waiters, t_queue) { - ASSERT(tic->t_flags & XLOG_TIC_PERM_RESERV); - - need_bytes = tic->t_unit_res; - + list_for_each_entry(tic, &head->waiters, t_queue) { + need_bytes = xlog_ticket_reservation(log, head, tic); if (*free_bytes < need_bytes) return false; - *free_bytes -= need_bytes; - trace_xfs_log_regrant_write_wake_up(log, tic); + *free_bytes -= need_bytes; + trace_xfs_log_grant_wake_up(log, tic); wake_up_process(tic->t_task); } @@ -772,7 +762,7 @@ xfs_log_space_wake( spin_lock(&log->l_write_head.lock); free_bytes = xlog_space_left(log, &log->l_write_head.grant); - xlog_writeq_wake(log, &free_bytes); + xlog_grant_head_wake(log, &log->l_write_head, &free_bytes); spin_unlock(&log->l_write_head.lock); } @@ -781,7 +771,7 @@ xfs_log_space_wake( spin_lock(&log->l_reserve_head.lock); free_bytes = xlog_space_left(log, &log->l_reserve_head.grant); - xlog_reserveq_wake(log, &free_bytes); + xlog_grant_head_wake(log, &log->l_reserve_head, &free_bytes); spin_unlock(&log->l_reserve_head.lock); } } @@ -2562,7 +2552,7 @@ xlog_grant_log_space( free_bytes = xlog_space_left(log, &log->l_reserve_head.grant); if (!list_empty_careful(&log->l_reserve_head.waiters)) { spin_lock(&log->l_reserve_head.lock); - if (!xlog_reserveq_wake(log, &free_bytes) || + if (!xlog_grant_head_wake(log, &log->l_reserve_head, &free_bytes) || free_bytes < need_bytes) { error = xlog_grant_head_wait(log, &log->l_reserve_head, tic, need_bytes); @@ -2618,7 +2608,7 @@ xlog_regrant_write_log_space( free_bytes = xlog_space_left(log, &log->l_write_head.grant); if (!list_empty_careful(&log->l_write_head.waiters)) { spin_lock(&log->l_write_head.lock); - if (!xlog_writeq_wake(log, &free_bytes) || + if (!xlog_grant_head_wake(log, &log->l_write_head, &free_bytes) || free_bytes < need_bytes) { error = xlog_grant_head_wait(log, &log->l_write_head, tic, need_bytes); diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index 7ee18e91bf89..482bebf8c7ef 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -837,7 +837,6 @@ DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake_up); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_enter); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_exit); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_error); -DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake_up); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_enter); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_exit); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_sub); |