From 03bea6fe6c38c502c815432999eacfa2eccb0a12 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 12 Oct 2007 10:58:05 +1000 Subject: [PATCH] [XFS] clean up some xfs_log_priv.h macros - the various assign lsn macros are replaced by a single inline, xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except for a more sane calling convention. ASSIGN_LSN_DISK is replaced by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same, except we pass the cycle and block arguments explicitly instead of a log paramter. The latter two variants only had 2, respectively one user anyway. - the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the same calling conventions. - GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away the unused arch argument. Instead of conditional defintions depending on host endianess we now do an unconditional swap and shift then, which generates equal code. - the unused XLOG_SET macro is removed. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:29819a Signed-off-by: Christoph Hellwig Signed-off-by: Lachlan McIlroy Signed-off-by: Tim Shimmin --- fs/xfs/xfs_log.c | 14 +++++++----- fs/xfs/xfs_log_priv.h | 47 ++++++++++++++-------------------------- fs/xfs/xfs_log_recover.c | 29 ++++++++++++++----------- 3 files changed, 40 insertions(+), 50 deletions(-) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 615638201284..90d96caf7200 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1161,7 +1161,7 @@ xlog_alloc_log(xfs_mount_t *mp, log->l_flags |= XLOG_ACTIVE_RECOVERY; log->l_prev_block = -1; - ASSIGN_ANY_LSN_HOST(log->l_tail_lsn, 1, 0); + log->l_tail_lsn = xlog_assign_lsn(1, 0); /* log->l_tail_lsn = 0x100000000LL; cycle = 1; current block = 0 */ log->l_last_sync_lsn = log->l_tail_lsn; log->l_curr_cycle = 1; /* 0 is bad since this is initial value */ @@ -1326,8 +1326,7 @@ xlog_grant_push_ail(xfs_mount_t *mp, threshold_block -= log->l_logBBsize; threshold_cycle += 1; } - ASSIGN_ANY_LSN_HOST(threshold_lsn, threshold_cycle, - threshold_block); + threshold_lsn = xlog_assign_lsn(threshold_cycle, threshold_block); /* Don't pass in an lsn greater than the lsn of the last * log record known to be on disk. @@ -2393,7 +2392,8 @@ restart: log->l_iclog_hsize, XLOG_REG_TYPE_LRHEADER); INT_SET(head->h_cycle, ARCH_CONVERT, log->l_curr_cycle); - ASSIGN_LSN(head->h_lsn, log); + INT_SET(head->h_lsn, ARCH_CONVERT, + xlog_assign_lsn(log->l_curr_cycle, log->l_curr_block)); ASSERT(log->l_curr_block >= 0); } @@ -3488,9 +3488,11 @@ xlog_verify_iclog(xlog_t *log, if (idx >= (XLOG_HEADER_CYCLE_SIZE / BBSIZE)) { j = idx / (XLOG_HEADER_CYCLE_SIZE / BBSIZE); k = idx % (XLOG_HEADER_CYCLE_SIZE / BBSIZE); - clientid = GET_CLIENT_ID(xhdr[j].hic_xheader.xh_cycle_data[k], ARCH_CONVERT); + clientid = xlog_get_client_id( + xhdr[j].hic_xheader.xh_cycle_data[k]); } else { - clientid = GET_CLIENT_ID(iclog->ic_header.h_cycle_data[idx], ARCH_CONVERT); + clientid = xlog_get_client_id( + iclog->ic_header.h_cycle_data[idx]); } } if (clientid != XFS_TRANSACTION && clientid != XFS_LOG) diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index 07da6a72628a..e391f58deae1 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -55,32 +55,21 @@ struct xfs_mount; BTOBB(XLOG_MAX_ICLOGS << (XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb) ? \ XLOG_MAX_RECORD_BSHIFT : XLOG_BIG_RECORD_BSHIFT)) -/* - * set lsns - */ -#define ASSIGN_ANY_LSN_HOST(lsn,cycle,block) \ - { \ - (lsn) = ((xfs_lsn_t)(cycle)<<32)|(block); \ - } -#define ASSIGN_ANY_LSN_DISK(lsn,cycle,block) \ - { \ - INT_SET(((uint *)&(lsn))[0], ARCH_CONVERT, (cycle)); \ - INT_SET(((uint *)&(lsn))[1], ARCH_CONVERT, (block)); \ - } -#define ASSIGN_LSN(lsn,log) \ - ASSIGN_ANY_LSN_DISK(lsn,(log)->l_curr_cycle,(log)->l_curr_block); - -#define XLOG_SET(f,b) (((f) & (b)) == (b)) - -#define GET_CYCLE(ptr, arch) \ - (INT_GET(*(uint *)(ptr), arch) == XLOG_HEADER_MAGIC_NUM ? \ - INT_GET(*((uint *)(ptr)+1), arch) : \ - INT_GET(*(uint *)(ptr), arch) \ - ) +static inline xfs_lsn_t xlog_assign_lsn(uint cycle, uint block) +{ + return ((xfs_lsn_t)cycle << 32) | block; +} -#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) +static inline uint xlog_get_cycle(char *ptr) +{ + if (INT_GET(*(uint *)ptr, ARCH_CONVERT) == XLOG_HEADER_MAGIC_NUM) + return INT_GET(*((uint *)ptr + 1), ARCH_CONVERT); + else + return INT_GET(*(uint *)ptr, ARCH_CONVERT); +} +#define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) #ifdef __KERNEL__ @@ -96,14 +85,10 @@ struct xfs_mount; * * this has endian issues, of course. */ - -#ifndef XFS_NATIVE_HOST -#define GET_CLIENT_ID(i,arch) \ - ((i) & 0xff) -#else -#define GET_CLIENT_ID(i,arch) \ - ((i) >> 24) -#endif +static inline uint xlog_get_client_id(uint i) +{ + return INT_GET(i, ARCH_CONVERT) >> 24; +} #define xlog_panic(args...) cmn_err(CE_PANIC, ## args) #define xlog_exit(args...) cmn_err(CE_PANIC, ## args) diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 4c39dc0e6841..e603591b9922 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -311,7 +311,7 @@ xlog_find_cycle_start( if ((error = xlog_bread(log, mid_blk, 1, bp))) return error; offset = xlog_align(log, mid_blk, 1, bp); - mid_cycle = GET_CYCLE(offset, ARCH_CONVERT); + mid_cycle = xlog_get_cycle(offset); if (mid_cycle == cycle) { *last_blk = mid_blk; /* last_half_cycle == mid_cycle */ @@ -371,7 +371,7 @@ xlog_find_verify_cycle( buf = xlog_align(log, i, bcount, bp); for (j = 0; j < bcount; j++) { - cycle = GET_CYCLE(buf, ARCH_CONVERT); + cycle = xlog_get_cycle(buf); if (cycle == stop_on_cycle_no) { *new_blk = i+j; goto out; @@ -550,13 +550,13 @@ xlog_find_head( if ((error = xlog_bread(log, 0, 1, bp))) goto bp_err; offset = xlog_align(log, 0, 1, bp); - first_half_cycle = GET_CYCLE(offset, ARCH_CONVERT); + first_half_cycle = xlog_get_cycle(offset); last_blk = head_blk = log_bbnum - 1; /* get cycle # of last block */ if ((error = xlog_bread(log, last_blk, 1, bp))) goto bp_err; offset = xlog_align(log, last_blk, 1, bp); - last_half_cycle = GET_CYCLE(offset, ARCH_CONVERT); + last_half_cycle = xlog_get_cycle(offset); ASSERT(last_half_cycle != 0); /* @@ -808,7 +808,7 @@ xlog_find_tail( if ((error = xlog_bread(log, 0, 1, bp))) goto bread_err; offset = xlog_align(log, 0, 1, bp); - if (GET_CYCLE(offset, ARCH_CONVERT) == 0) { + if (xlog_get_cycle(offset) == 0) { *tail_blk = 0; /* leave all other log inited values alone */ goto exit; @@ -922,10 +922,12 @@ xlog_find_tail( * log records will point recovery to after the * current unmount record. */ - ASSIGN_ANY_LSN_HOST(log->l_tail_lsn, log->l_curr_cycle, - after_umount_blk); - ASSIGN_ANY_LSN_HOST(log->l_last_sync_lsn, log->l_curr_cycle, - after_umount_blk); + log->l_tail_lsn = + xlog_assign_lsn(log->l_curr_cycle, + after_umount_blk); + log->l_last_sync_lsn = + xlog_assign_lsn(log->l_curr_cycle, + after_umount_blk); *tail_blk = after_umount_blk; /* @@ -1007,7 +1009,7 @@ xlog_find_zeroed( if ((error = xlog_bread(log, 0, 1, bp))) goto bp_err; offset = xlog_align(log, 0, 1, bp); - first_cycle = GET_CYCLE(offset, ARCH_CONVERT); + first_cycle = xlog_get_cycle(offset); if (first_cycle == 0) { /* completely zeroed log */ *blk_no = 0; xlog_put_bp(bp); @@ -1018,7 +1020,7 @@ xlog_find_zeroed( if ((error = xlog_bread(log, log_bbnum-1, 1, bp))) goto bp_err; offset = xlog_align(log, log_bbnum-1, 1, bp); - last_cycle = GET_CYCLE(offset, ARCH_CONVERT); + last_cycle = xlog_get_cycle(offset); if (last_cycle != 0) { /* log completely written to */ xlog_put_bp(bp); return 0; @@ -1102,8 +1104,9 @@ xlog_add_record( INT_SET(recp->h_cycle, ARCH_CONVERT, cycle); INT_SET(recp->h_version, ARCH_CONVERT, XFS_SB_VERSION_HASLOGV2(&log->l_mp->m_sb) ? 2 : 1); - ASSIGN_ANY_LSN_DISK(recp->h_lsn, cycle, block); - ASSIGN_ANY_LSN_DISK(recp->h_tail_lsn, tail_cycle, tail_block); + INT_SET(recp->h_lsn, ARCH_CONVERT, xlog_assign_lsn(cycle, block)); + INT_SET(recp->h_tail_lsn, ARCH_CONVERT, + xlog_assign_lsn(tail_cycle, tail_block)); INT_SET(recp->h_fmt, ARCH_CONVERT, XLOG_FMT); memcpy(&recp->h_fs_uuid, &log->l_mp->m_sb.sb_uuid, sizeof(uuid_t)); } -- 2.30.2