From 2bdf7cd0baa67608ada1517a281af359faf4c58c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 28 Aug 2007 13:58:06 +1000 Subject: [XFS] superblock endianess annotations Creates a new xfs_dsb_t that is __be annotated and keeps xfs_sb_t for the incore one. xfs_xlatesb is renamed to xfs_sb_to_disk and only handles the incore -> disk conversion. A new helper xfs_sb_from_disk handles the other direction and doesn't need the slightly hacky table-driven approach because we only ever read the full sb from disk. The handling of shared r/o filesystems has been buggy on little endian system and fixing this required shuffling around of some code in that area. SGI-PV: 968563 SGI-Modid: xfs-linux-melb:xfs-kern:29477a Signed-off-by: Christoph Hellwig Signed-off-by: David Chinner Signed-off-by: Tim Shimmin --- fs/xfs/xfs_trans.c | 72 +++++++++++++++++++++++++----------------------------- 1 file changed, 33 insertions(+), 39 deletions(-) (limited to 'fs/xfs/xfs_trans.c') diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 356d6627f58..668996aae36 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -548,7 +548,7 @@ STATIC void xfs_trans_apply_sb_deltas( xfs_trans_t *tp) { - xfs_sb_t *sbp; + xfs_dsb_t *sbp; xfs_buf_t *bp; int whole = 0; @@ -566,57 +566,51 @@ xfs_trans_apply_sb_deltas( * Only update the superblock counters if we are logging them */ if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { - if (tp->t_icount_delta != 0) { - INT_MOD(sbp->sb_icount, ARCH_CONVERT, tp->t_icount_delta); - } - if (tp->t_ifree_delta != 0) { - INT_MOD(sbp->sb_ifree, ARCH_CONVERT, tp->t_ifree_delta); - } - - if (tp->t_fdblocks_delta != 0) { - INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_fdblocks_delta); - } - if (tp->t_res_fdblocks_delta != 0) { - INT_MOD(sbp->sb_fdblocks, ARCH_CONVERT, tp->t_res_fdblocks_delta); - } + if (tp->t_icount_delta) + be64_add(&sbp->sb_icount, tp->t_icount_delta); + if (tp->t_ifree_delta) + be64_add(&sbp->sb_ifree, tp->t_ifree_delta); + if (tp->t_fdblocks_delta) + be64_add(&sbp->sb_fdblocks, tp->t_fdblocks_delta); + if (tp->t_res_fdblocks_delta) + be64_add(&sbp->sb_fdblocks, tp->t_res_fdblocks_delta); } - if (tp->t_frextents_delta != 0) { - INT_MOD(sbp->sb_frextents, ARCH_CONVERT, tp->t_frextents_delta); - } - if (tp->t_res_frextents_delta != 0) { - INT_MOD(sbp->sb_frextents, ARCH_CONVERT, tp->t_res_frextents_delta); - } - if (tp->t_dblocks_delta != 0) { - INT_MOD(sbp->sb_dblocks, ARCH_CONVERT, tp->t_dblocks_delta); + if (tp->t_frextents_delta) + be64_add(&sbp->sb_frextents, tp->t_frextents_delta); + if (tp->t_res_frextents_delta) + be64_add(&sbp->sb_frextents, tp->t_res_frextents_delta); + + if (tp->t_dblocks_delta) { + be64_add(&sbp->sb_dblocks, tp->t_dblocks_delta); whole = 1; } - if (tp->t_agcount_delta != 0) { - INT_MOD(sbp->sb_agcount, ARCH_CONVERT, tp->t_agcount_delta); + if (tp->t_agcount_delta) { + be32_add(&sbp->sb_agcount, tp->t_agcount_delta); whole = 1; } - if (tp->t_imaxpct_delta != 0) { - INT_MOD(sbp->sb_imax_pct, ARCH_CONVERT, tp->t_imaxpct_delta); + if (tp->t_imaxpct_delta) { + sbp->sb_imax_pct += tp->t_imaxpct_delta; whole = 1; } - if (tp->t_rextsize_delta != 0) { - INT_MOD(sbp->sb_rextsize, ARCH_CONVERT, tp->t_rextsize_delta); + if (tp->t_rextsize_delta) { + be32_add(&sbp->sb_rextsize, tp->t_rextsize_delta); whole = 1; } - if (tp->t_rbmblocks_delta != 0) { - INT_MOD(sbp->sb_rbmblocks, ARCH_CONVERT, tp->t_rbmblocks_delta); + if (tp->t_rbmblocks_delta) { + be32_add(&sbp->sb_rbmblocks, tp->t_rbmblocks_delta); whole = 1; } - if (tp->t_rblocks_delta != 0) { - INT_MOD(sbp->sb_rblocks, ARCH_CONVERT, tp->t_rblocks_delta); + if (tp->t_rblocks_delta) { + be64_add(&sbp->sb_rblocks, tp->t_rblocks_delta); whole = 1; } - if (tp->t_rextents_delta != 0) { - INT_MOD(sbp->sb_rextents, ARCH_CONVERT, tp->t_rextents_delta); + if (tp->t_rextents_delta) { + be64_add(&sbp->sb_rextents, tp->t_rextents_delta); whole = 1; } - if (tp->t_rextslog_delta != 0) { - INT_MOD(sbp->sb_rextslog, ARCH_CONVERT, tp->t_rextslog_delta); + if (tp->t_rextslog_delta) { + sbp->sb_rextslog += tp->t_rextslog_delta; whole = 1; } @@ -624,14 +618,14 @@ xfs_trans_apply_sb_deltas( /* * Log the whole thing, the fields are noncontiguous. */ - xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_sb_t) - 1); + xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_dsb_t) - 1); else /* * Since all the modifiable fields are contiguous, we * can get away with this. */ - xfs_trans_log_buf(tp, bp, offsetof(xfs_sb_t, sb_icount), - offsetof(xfs_sb_t, sb_frextents) + + xfs_trans_log_buf(tp, bp, offsetof(xfs_dsb_t, sb_icount), + offsetof(xfs_dsb_t, sb_frextents) + sizeof(sbp->sb_frextents) - 1); XFS_MTOVFS(tp->t_mountp)->vfs_super->s_dirt = 1; -- cgit v1.2.3