From c8b5ea289fed15a7d7a4d6e911987ff16499aed7 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 11 Oct 2007 17:37:31 +1000 Subject: [PATCH] [XFS] Unwrap GRANT_LOCK. Un-obfuscate GRANT_LOCK, remove GRANT_LOCK->mutex_lock->spin_lock macros, call spin_lock directly, remove extraneous cookie holdover from old xfs code, and change lock type to spinlock_t. SGI-PV: 970382 SGI-Modid: xfs-linux-melb:xfs-kern:29741a Signed-off-by: Eric Sandeen Signed-off-by: Donald Douwsma Signed-off-by: Tim Shimmin --- fs/xfs/xfs_log.c | 74 ++++++++++++++++++------------------------- fs/xfs/xfs_log_priv.h | 5 +-- fs/xfs/xfs_vnodeops.c | 6 ++-- 3 files changed, 35 insertions(+), 50 deletions(-) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 5eb82306ef76..f1f1f36876e4 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -761,7 +761,6 @@ xfs_log_move_tail(xfs_mount_t *mp, xlog_ticket_t *tic; xlog_t *log = mp->m_log; int need_bytes, free_bytes, cycle, bytes; - SPLDECL(s); if (XLOG_FORCED_SHUTDOWN(log)) return; @@ -774,7 +773,7 @@ xfs_log_move_tail(xfs_mount_t *mp, spin_unlock(&log->l_icloglock); } - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); /* Also an invalid lsn. 1 implies that we aren't passing in a valid * tail_lsn. @@ -823,7 +822,7 @@ xfs_log_move_tail(xfs_mount_t *mp, tic = tic->t_next; } while (tic != log->l_reserve_headq); } - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); } /* xfs_log_move_tail */ /* @@ -879,17 +878,16 @@ xfs_lsn_t xlog_assign_tail_lsn(xfs_mount_t *mp) { xfs_lsn_t tail_lsn; - SPLDECL(s); xlog_t *log = mp->m_log; tail_lsn = xfs_trans_tail_ail(mp); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); if (tail_lsn != 0) { log->l_tail_lsn = tail_lsn; } else { tail_lsn = log->l_tail_lsn = log->l_last_sync_lsn; } - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return tail_lsn; } /* xlog_assign_tail_lsn */ @@ -1303,11 +1301,10 @@ xlog_grant_push_ail(xfs_mount_t *mp, int threshold_block; /* block in lsn we'd like to be at */ int threshold_cycle; /* lsn cycle we'd like to be at */ int free_threshold; - SPLDECL(s); ASSERT(BTOBB(need_bytes) < log->l_logBBsize); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); free_bytes = xlog_space_left(log, log->l_grant_reserve_cycle, log->l_grant_reserve_bytes); @@ -1338,7 +1335,7 @@ xlog_grant_push_ail(xfs_mount_t *mp, if (XFS_LSN_CMP(threshold_lsn, log->l_last_sync_lsn) > 0) threshold_lsn = log->l_last_sync_lsn; } - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); /* * Get the transaction layer to kick the dirty buffers out to @@ -1388,7 +1385,6 @@ xlog_sync(xlog_t *log, int roundoff; /* roundoff to BB or stripe */ int split = 0; /* split write into two regions */ int error; - SPLDECL(s); int v2 = XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb); XFS_STATS_INC(xs_log_writes); @@ -1413,9 +1409,9 @@ xlog_sync(xlog_t *log, roundoff < BBTOB(1))); /* move grant heads by roundoff in sync */ - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); xlog_grant_add_space(log, roundoff); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); /* put cycle number in every block */ xlog_pack_data(log, iclog, roundoff); @@ -2084,7 +2080,6 @@ xlog_state_do_callback( int funcdidcallbacks; /* flag: function did callbacks */ int repeats; /* for issuing console warnings if * looping too many times */ - SPLDECL(s); spin_lock(&log->l_icloglock); first_iclog = iclog = log->l_iclog; @@ -2172,16 +2167,16 @@ xlog_state_do_callback( spin_unlock(&log->l_icloglock); /* l_last_sync_lsn field protected by - * GRANT_LOCK. Don't worry about iclog's lsn. + * l_grant_lock. Don't worry about iclog's lsn. * No one else can be here except us. */ - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); ASSERT(XFS_LSN_CMP( log->l_last_sync_lsn, INT_GET(iclog->ic_header.h_lsn, ARCH_CONVERT) )<=0); log->l_last_sync_lsn = INT_GET(iclog->ic_header.h_lsn, ARCH_CONVERT); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); /* * Keep processing entries in the callback list @@ -2460,7 +2455,6 @@ xlog_grant_log_space(xlog_t *log, { int free_bytes; int need_bytes; - SPLDECL(s); #ifdef DEBUG xfs_lsn_t tail_lsn; #endif @@ -2472,7 +2466,7 @@ xlog_grant_log_space(xlog_t *log, #endif /* Is there space or do we need to sleep? */ - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); xlog_trace_loggrant(log, tic, "xlog_grant_log_space: enter"); /* something is already sleeping; insert new transaction at end */ @@ -2495,7 +2489,7 @@ xlog_grant_log_space(xlog_t *log, */ xlog_trace_loggrant(log, tic, "xlog_grant_log_space: wake 1"); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); } if (tic->t_flags & XFS_LOG_PERM_RESERV) need_bytes = tic->t_unit_res*tic->t_ocnt; @@ -2517,14 +2511,14 @@ redo: sv_wait(&tic->t_sema, PINOD|PLTWAIT, &log->l_grant_lock, s); if (XLOG_FORCED_SHUTDOWN(log)) { - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); goto error_return; } xlog_trace_loggrant(log, tic, "xlog_grant_log_space: wake 2"); xlog_grant_push_ail(log->l_mp, need_bytes); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); goto redo; } else if (tic->t_flags & XLOG_TIC_IN_Q) xlog_del_ticketq(&log->l_reserve_headq, tic); @@ -2546,7 +2540,7 @@ redo: #endif xlog_trace_loggrant(log, tic, "xlog_grant_log_space: exit"); xlog_verify_grant_head(log, 1); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return 0; error_return: @@ -2560,7 +2554,7 @@ redo: */ tic->t_curr_res = 0; tic->t_cnt = 0; /* ungrant will give back unit_res * t_cnt. */ - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return XFS_ERROR(EIO); } /* xlog_grant_log_space */ @@ -2574,7 +2568,6 @@ STATIC int xlog_regrant_write_log_space(xlog_t *log, xlog_ticket_t *tic) { - SPLDECL(s); int free_bytes, need_bytes; xlog_ticket_t *ntic; #ifdef DEBUG @@ -2592,7 +2585,7 @@ xlog_regrant_write_log_space(xlog_t *log, panic("regrant Recovery problem"); #endif - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: enter"); if (XLOG_FORCED_SHUTDOWN(log)) @@ -2631,14 +2624,14 @@ xlog_regrant_write_log_space(xlog_t *log, /* If we're shutting down, this tic is already * off the queue */ if (XLOG_FORCED_SHUTDOWN(log)) { - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); goto error_return; } xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: wake 1"); xlog_grant_push_ail(log->l_mp, tic->t_unit_res); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); } } @@ -2658,14 +2651,14 @@ redo: /* If we're shutting down, this tic is already off the queue */ if (XLOG_FORCED_SHUTDOWN(log)) { - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); goto error_return; } xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: wake 2"); xlog_grant_push_ail(log->l_mp, need_bytes); - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); goto redo; } else if (tic->t_flags & XLOG_TIC_IN_Q) xlog_del_ticketq(&log->l_write_headq, tic); @@ -2682,7 +2675,7 @@ redo: xlog_trace_loggrant(log, tic, "xlog_regrant_write_log_space: exit"); xlog_verify_grant_head(log, 1); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return 0; @@ -2697,7 +2690,7 @@ redo: */ tic->t_curr_res = 0; tic->t_cnt = 0; /* ungrant will give back unit_res * t_cnt. */ - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return XFS_ERROR(EIO); } /* xlog_regrant_write_log_space */ @@ -2713,14 +2706,12 @@ STATIC void xlog_regrant_reserve_log_space(xlog_t *log, xlog_ticket_t *ticket) { - SPLDECL(s); - xlog_trace_loggrant(log, ticket, "xlog_regrant_reserve_log_space: enter"); if (ticket->t_cnt > 0) ticket->t_cnt--; - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); xlog_grant_sub_space(log, ticket->t_curr_res); ticket->t_curr_res = ticket->t_unit_res; xlog_tic_reset_res(ticket); @@ -2730,7 +2721,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, /* just return if we still have some of the pre-reserved space */ if (ticket->t_cnt > 0) { - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); return; } @@ -2738,7 +2729,7 @@ xlog_regrant_reserve_log_space(xlog_t *log, xlog_trace_loggrant(log, ticket, "xlog_regrant_reserve_log_space: exit"); xlog_verify_grant_head(log, 0); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); ticket->t_curr_res = ticket->t_unit_res; xlog_tic_reset_res(ticket); } /* xlog_regrant_reserve_log_space */ @@ -2762,12 +2753,10 @@ STATIC void xlog_ungrant_log_space(xlog_t *log, xlog_ticket_t *ticket) { - SPLDECL(s); - if (ticket->t_cnt > 0) ticket->t_cnt--; - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); xlog_trace_loggrant(log, ticket, "xlog_ungrant_log_space: enter"); xlog_grant_sub_space(log, ticket->t_curr_res); @@ -2784,7 +2773,7 @@ xlog_ungrant_log_space(xlog_t *log, xlog_trace_loggrant(log, ticket, "xlog_ungrant_log_space: exit"); xlog_verify_grant_head(log, 1); - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); xfs_log_move_tail(log->l_mp, 1); } /* xlog_ungrant_log_space */ @@ -3579,7 +3568,6 @@ xfs_log_force_umount( xlog_t *log; int retval; int dummy; - SPLDECL(s); log = mp->m_log; @@ -3608,7 +3596,7 @@ xfs_log_force_umount( * before we mark the filesystem SHUTDOWN and wake * everybody up to tell the bad news. */ - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); spin_lock(&log->l_icloglock); mp->m_flags |= XFS_MOUNT_FS_SHUTDOWN; XFS_BUF_DONE(mp->m_sb_bp); @@ -3648,7 +3636,7 @@ xfs_log_force_umount( tic = tic->t_next; } while (tic != log->l_write_headq); } - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); if (! (log->l_iclog->ic_state & XLOG_STATE_IOERROR)) { ASSERT(!logerror); diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index 5fa21b030666..07da6a72628a 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -105,9 +105,6 @@ struct xfs_mount; ((i) >> 24) #endif -#define GRANT_LOCK(log) mutex_spinlock(&(log)->l_grant_lock) -#define GRANT_UNLOCK(log, s) mutex_spinunlock(&(log)->l_grant_lock, s) - #define xlog_panic(args...) cmn_err(CE_PANIC, ## args) #define xlog_exit(args...) cmn_err(CE_PANIC, ## args) #define xlog_warn(args...) cmn_err(CE_WARN, ## args) @@ -437,7 +434,7 @@ typedef struct log { char *l_iclog_bak[XLOG_MAX_ICLOGS]; /* The following block of fields are changed while holding grant_lock */ - lock_t l_grant_lock; + spinlock_t l_grant_lock; xlog_ticket_t *l_reserve_headq; xlog_ticket_t *l_write_headq; int l_grant_reserve_cycle; diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index a5cd2dc4c80a..7d3c4a7aa2dc 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -3554,11 +3554,11 @@ xfs_inode_flush( if (iip && iip->ili_last_lsn) { xlog_t *log = mp->m_log; xfs_lsn_t sync_lsn; - int s, log_flags = XFS_LOG_FORCE; + int log_flags = XFS_LOG_FORCE; - s = GRANT_LOCK(log); + spin_lock(&log->l_grant_lock); sync_lsn = log->l_last_sync_lsn; - GRANT_UNLOCK(log, s); + spin_unlock(&log->l_grant_lock); if ((XFS_LSN_CMP(iip->ili_last_lsn, sync_lsn) > 0)) { if (flags & FLUSH_SYNC)