From 83e06f21b439b7b308eda06332a4feef35739e94 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 9 Feb 2016 16:54:58 +1100 Subject: [PATCH] xfs: move di_changecount to VFS inode We can store the di_changecount in the i_version field of the VFS inode and remove another 8 bytes from the xfs_icdinode. Signed-off-by: Dave Chinner Reviewed-by: Brian Foster Reviewed-by: Christoph Hellwig Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_inode_buf.c | 4 ++-- fs/xfs/libxfs/xfs_inode_buf.h | 1 - fs/xfs/xfs_icache.c | 6 ++++-- fs/xfs/xfs_inode.c | 2 +- fs/xfs/xfs_inode_item.c | 2 +- fs/xfs/xfs_trans_inode.c | 2 +- 6 files changed, 9 insertions(+), 8 deletions(-) diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index 9113a8d0f148..05fbefa97fbf 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -251,7 +251,7 @@ xfs_inode_from_disk( to->di_flags = be16_to_cpu(from->di_flags); if (to->di_version == 3) { - to->di_changecount = be64_to_cpu(from->di_changecount); + inode->i_version = be64_to_cpu(from->di_changecount); to->di_crtime.t_sec = be32_to_cpu(from->di_crtime.t_sec); to->di_crtime.t_nsec = be32_to_cpu(from->di_crtime.t_nsec); to->di_flags2 = be64_to_cpu(from->di_flags2); @@ -300,7 +300,7 @@ xfs_inode_to_disk( to->di_flags = cpu_to_be16(from->di_flags); if (from->di_version == 3) { - to->di_changecount = cpu_to_be64(from->di_changecount); + to->di_changecount = cpu_to_be64(inode->i_version); to->di_crtime.t_sec = cpu_to_be32(from->di_crtime.t_sec); to->di_crtime.t_nsec = cpu_to_be32(from->di_crtime.t_nsec); to->di_flags2 = cpu_to_be64(from->di_flags2); diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h index 29fd9f1cf54b..c51bd1213c96 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.h +++ b/fs/xfs/libxfs/xfs_inode_buf.h @@ -47,7 +47,6 @@ struct xfs_icdinode { __uint16_t di_dmstate; /* DMIG state info */ __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ - __uint64_t di_changecount; /* number of attribute changes */ __uint64_t di_flags2; /* more random flags */ xfs_ictimestamp_t di_crtime; /* time created */ diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 6401e3c07d3a..30eafad7cf19 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -138,9 +138,9 @@ xfs_inode_free( * When we recycle a reclaimable inode, we need to re-initialise the VFS inode * part of the structure. This is made more complex by the fact we store * information about the on-disk values in the VFS inode and so we can't just - * overwrite it's values unconditionally. Hence we save the parameters we + * overwrite the values unconditionally. Hence we save the parameters we * need to retain across reinitialisation, and rewrite them into the VFS inode - * after resetting it's state even if resetting fails. + * after reinitialisation even if it fails. */ static int xfs_reinit_inode( @@ -150,11 +150,13 @@ xfs_reinit_inode( int error; uint32_t nlink = inode->i_nlink; uint32_t generation = inode->i_generation; + uint64_t version = inode->i_version; error = inode_init_always(mp->m_super, inode); set_nlink(inode, nlink); inode->i_generation = generation; + inode->i_version = version; return error; } diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index dfc5b18c8cc2..8a970056a2c4 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -841,7 +841,7 @@ xfs_ialloc( ip->i_d.di_flags = 0; if (ip->i_d.di_version == 3) { - ip->i_d.di_changecount = 1; + inode->i_version = 1; ip->i_d.di_flags2 = 0; ip->i_d.di_crtime.t_sec = (__int32_t)tv.tv_sec; ip->i_d.di_crtime.t_nsec = (__int32_t)tv.tv_nsec; diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 6367780b8abb..3415c63bc843 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -364,7 +364,7 @@ xfs_inode_to_log_dinode( to->di_flags = from->di_flags; if (from->di_version == 3) { - to->di_changecount = from->di_changecount; + to->di_changecount = inode->i_version; to->di_crtime.t_sec = from->di_crtime.t_sec; to->di_crtime.t_nsec = from->di_crtime.t_nsec; to->di_flags2 = from->di_flags2; diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c index 3f0d46655ce5..11a3af08b5c7 100644 --- a/fs/xfs/xfs_trans_inode.c +++ b/fs/xfs/xfs_trans_inode.c @@ -117,7 +117,7 @@ xfs_trans_log_inode( */ if (!(ip->i_itemp->ili_item.li_desc->lid_flags & XFS_LID_DIRTY) && IS_I_VERSION(VFS_I(ip))) { - ip->i_d.di_changecount = ++VFS_I(ip)->i_version; + VFS_I(ip)->i_version++; flags |= XFS_ILOG_CORE; } -- 2.20.1