diff options
Diffstat (limited to 'fs/xfs/xfs_inode.c')
| -rw-r--r-- | fs/xfs/xfs_inode.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index f072f48b3c04..09640bdd3e44 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -78,6 +78,27 @@ xfs_get_extsz_hint( } /* + * Helper function to extract CoW extent size hint from inode. + * Between the extent size hint and the CoW extent size hint, we + * return the greater of the two. + */ +xfs_extlen_t +xfs_get_cowextsz_hint( + struct xfs_inode *ip) +{ + xfs_extlen_t a, b; + + a = 0; + if (ip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE) + a = ip->i_d.di_cowextsize; + b = xfs_get_extsz_hint(ip); + + if (a > b) + return a; + return b; +} + +/* * These two are wrapper routines around the xfs_ilock() routine used to * centralize some grungy code. They are used in places that wish to lock the * inode solely for reading the extents. The reason these places can't just @@ -652,6 +673,8 @@ _xfs_dic2xflags( if (di_flags2 & XFS_DIFLAG2_ANY) { if (di_flags2 & XFS_DIFLAG2_DAX) flags |= FS_XFLAG_DAX; + if (di_flags2 & XFS_DIFLAG2_COWEXTSIZE) + flags |= FS_XFLAG_COWEXTSIZE; } if (has_attr) @@ -835,6 +858,7 @@ xfs_ialloc( if (ip->i_d.di_version == 3) { inode->i_version = 1; ip->i_d.di_flags2 = 0; + ip->i_d.di_cowextsize = 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; } @@ -897,6 +921,15 @@ xfs_ialloc( ip->i_d.di_flags |= di_flags; ip->i_d.di_flags2 |= di_flags2; } + if (pip && + (pip->i_d.di_flags2 & XFS_DIFLAG2_ANY) && + pip->i_d.di_version == 3 && + ip->i_d.di_version == 3) { + if (pip->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE) { + ip->i_d.di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; + ip->i_d.di_cowextsize = pip->i_d.di_cowextsize; + } + } /* FALLTHROUGH */ case S_IFLNK: ip->i_d.di_format = XFS_DINODE_FMT_EXTENTS; |