From: Tim Shimmin Date: Fri, 23 Nov 2007 05:30:42 +0000 (+1100) Subject: [XFS] Remove the BPCSHIFT and NB* based macros from XFS. X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e6a4b37f38dca6e86b2648d172946700ee921e12;p=openwrt%2Fstaging%2Fblogic.git [XFS] Remove the BPCSHIFT and NB* based macros from XFS. The BPCSHIFT based macros, btoc*, ctob*, offtoc* and ctooff are either not used or don't need to be used. The NDPP, NDPP, NBBY macros don't need to be used but instead are replaced directly by PAGE_SIZE and PAGE_CACHE_SIZE where appropriate. Initial patch and motivation from Nicolas Kaiser. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30096a Signed-off-by: Tim Shimmin Signed-off-by: Lachlan McIlroy --- diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 9bf4f7e965c7..3ca39c4e5d2a 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -138,43 +138,17 @@ #define spinlock_destroy(lock) -#define NBPP PAGE_SIZE -#define NDPP (1 << (PAGE_SHIFT - 9)) - #define NBBY 8 /* number of bits per byte */ -#define NBPC PAGE_SIZE /* Number of bytes per click */ -#define BPCSHIFT PAGE_SHIFT /* LOG2(NBPC) if exact */ /* * Size of block device i/o is parameterized here. * Currently the system supports page-sized i/o. */ -#define BLKDEV_IOSHIFT BPCSHIFT +#define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT #define BLKDEV_IOSIZE (1<>BPCSHIFT) -#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT) -#define btoc64(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT) -#define btoct64(x) ((__uint64_t)(x)>>BPCSHIFT) - -/* off_t bytes to clicks */ -#define offtoc(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT) -#define offtoct(x) ((xfs_off_t)(x)>>BPCSHIFT) - -/* clicks to off_t bytes */ -#define ctooff(x) ((xfs_off_t)(x)<>BPCSHIFT) -#define ctob64(x) ((__uint64_t)(x)<>BPCSHIFT) - #define ENOATTR ENODATA /* Attribute not found */ #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c index 19a1f077dbd6..6c3a846a5267 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ b/fs/xfs/linux-2.6/xfs_lrw.c @@ -243,9 +243,8 @@ xfs_read( if (unlikely(ioflags & IO_ISDIRECT)) { if (VN_CACHED(vp)) - ret = xfs_flushinval_pages(ip, - ctooff(offtoct(*offset)), - -1, FI_REMAPF_LOCKED); + ret = xfs_flushinval_pages(ip, (*offset & PAGE_CACHE_MASK), + -1, FI_REMAPF_LOCKED); mutex_unlock(&inode->i_mutex); if (ret) { xfs_iunlock(ip, XFS_IOLOCK_SHARED); @@ -731,9 +730,9 @@ retry: if (VN_CACHED(vp)) { WARN_ON(need_i_mutex == 0); xfs_inval_cached_trace(xip, pos, -1, - ctooff(offtoct(pos)), -1); + (pos & PAGE_CACHE_MASK), -1); error = xfs_flushinval_pages(xip, - ctooff(offtoct(pos)), + (pos & PAGE_CACHE_MASK), -1, FI_REMAPF_LOCKED); if (error) goto out_unlock_internal; diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/quota/xfs_qm.h index 023400aa55a3..baf537c1c177 100644 --- a/fs/xfs/quota/xfs_qm.h +++ b/fs/xfs/quota/xfs_qm.h @@ -52,8 +52,8 @@ extern kmem_zone_t *qm_dqtrxzone; /* * Dquot hashtable constants/threshold values. */ -#define XFS_QM_HASHSIZE_LOW (NBPP / sizeof(xfs_dqhash_t)) -#define XFS_QM_HASHSIZE_HIGH ((NBPP * 4) / sizeof(xfs_dqhash_t)) +#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t)) +#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t)) /* * This defines the unit of allocation of dquots. diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index aca51e7e5c5a..1c0a5a585a82 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -2830,11 +2830,11 @@ xfs_bmap_btalloc( args.prod = align; if ((args.mod = (xfs_extlen_t)do_mod(ap->off, args.prod))) args.mod = (xfs_extlen_t)(args.prod - args.mod); - } else if (mp->m_sb.sb_blocksize >= NBPP) { + } else if (mp->m_sb.sb_blocksize >= PAGE_CACHE_SIZE) { args.prod = 1; args.mod = 0; } else { - args.prod = NBPP >> mp->m_sb.sb_blocklog; + args.prod = PAGE_CACHE_SIZE >> mp->m_sb.sb_blocklog; if ((args.mod = (xfs_extlen_t)(do_mod(ap->off, args.prod)))) args.mod = (xfs_extlen_t)(args.prod - args.mod); } diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index d9ca3c0eb8cc..a451baaeede8 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -399,7 +399,7 @@ xfs_bulkstat( (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog); nimask = ~(nicluster - 1); nbcluster = nicluster >> mp->m_sb.sb_inopblog; - irbuf = kmem_zalloc_greedy(&irbsize, NBPC, NBPC * 4, + irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4, KM_SLEEP | KM_MAYFAIL | KM_LARGE); nirbuf = irbsize / sizeof(*irbuf); @@ -830,7 +830,7 @@ xfs_inumbers( agino = XFS_INO_TO_AGINO(mp, ino); left = *count; *count = 0; - bcount = MIN(left, (int)(NBPP / sizeof(*buffer))); + bcount = MIN(left, (int)(PAGE_SIZE / sizeof(*buffer))); buffer = kmem_alloc(bcount * sizeof(*buffer), KM_SLEEP); error = bufidx = 0; cur = NULL; diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 7ed15bdc32bf..4c86a26330a0 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -1552,7 +1552,7 @@ xlog_dealloc_log(xlog_t *log) tic = log->l_unmount_free; while (tic) { next_tic = tic->t_next; - kmem_free(tic, NBPP); + kmem_free(tic, PAGE_SIZE); tic = next_tic; } } @@ -3161,13 +3161,13 @@ xlog_state_ticket_alloc(xlog_t *log) xlog_ticket_t *t_list; xlog_ticket_t *next; xfs_caddr_t buf; - uint i = (NBPP / sizeof(xlog_ticket_t)) - 2; + uint i = (PAGE_SIZE / sizeof(xlog_ticket_t)) - 2; /* * The kmem_zalloc may sleep, so we shouldn't be holding the * global lock. XXXmiken: may want to use zone allocator. */ - buf = (xfs_caddr_t) kmem_zalloc(NBPP, KM_SLEEP); + buf = (xfs_caddr_t) kmem_zalloc(PAGE_SIZE, KM_SLEEP); spin_lock(&log->l_icloglock); diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 5322d9fb5321..7f380e885a6f 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -4164,15 +4164,12 @@ xfs_free_file_space( vn_iowait(ip); /* wait for the completion of any pending DIOs */ } - rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, NBPP); + rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); ioffset = offset & ~(rounding - 1); if (VN_CACHED(vp) != 0) { - xfs_inval_cached_trace(ip, ioffset, -1, - ctooff(offtoct(ioffset)), -1); - error = xfs_flushinval_pages(ip, - ctooff(offtoct(ioffset)), - -1, FI_REMAPF_LOCKED); + xfs_inval_cached_trace(ip, ioffset, -1, ioffset, -1); + error = xfs_flushinval_pages(ip, ioffset, -1, FI_REMAPF_LOCKED); if (error) goto out_unlock_iolock; }