From: Darrick J. Wong <djwong@xxxxxxxxxx> Wire up the copy-on-write extent size hint for realtime files, and connect it to the rt allocator so that we avoid fragmentation on rt filesystems. Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- fs/xfs/libxfs/xfs_bmap.c | 8 +++++++- fs/xfs/xfs_rtalloc.c | 5 ++++- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index ae3d33d6076102..40ad22fb808b95 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -6524,7 +6524,13 @@ xfs_get_cowextsz_hint( a = 0; if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE) a = ip->i_cowextsize; - b = xfs_get_extsz_hint(ip); + if (XFS_IS_REALTIME_INODE(ip)) { + b = 0; + if (ip->i_diflags & XFS_DIFLAG_EXTSIZE) + b = ip->i_extsize; + } else { + b = xfs_get_extsz_hint(ip); + } a = max(a, b); if (a == 0) diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 294aa0739be311..f5a3d5f8c948d8 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -2021,7 +2021,10 @@ xfs_rtallocate_align( if (*noalign) { align = mp->m_sb.sb_rextsize; } else { - align = xfs_get_extsz_hint(ap->ip); + if (ap->flags & XFS_BMAPI_COWFORK) + align = xfs_get_cowextsz_hint(ap->ip); + else + align = xfs_get_extsz_hint(ap->ip); if (!align) align = 1; if (align == mp->m_sb.sb_rextsize)