diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2024-11-03 20:19:17 -0800 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2024-11-05 13:38:39 -0800 |
| commit | 96768e91511bfced6e9e537f4891157d909b13ee (patch) | |
| tree | 8fcd21b1cb234f4b56f33e108e0f70876956fd5b /fs/xfs/xfs_rtalloc.c | |
| parent | 64c58d7c99343a910edf995e15d8037e19ec5777 (diff) | |
xfs: define the format of rt groups
Define the ondisk format of realtime group metadata, and a superblock
for realtime volumes. rt supers are conditionally enabled by a
predicate function so that they can be disabled if we ever implement
zoned storage support for the realtime volume.
For rt group enabled file systems there is a separate bitmap and summary
file for each group and thus the number of bitmap and summary blocks
needs to be calculated differently.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index d9fb5e9c0aaf..b4687a8759b1 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -751,6 +751,11 @@ xfs_growfs_rt_alloc_fake_mount( nmp->m_sb.sb_rextents = xfs_blen_to_rtbxlen(nmp, nmp->m_sb.sb_rblocks); nmp->m_sb.sb_rbmblocks = xfs_rtbitmap_blockcount(nmp); nmp->m_sb.sb_rextslog = xfs_compute_rextslog(nmp->m_sb.sb_rextents); + if (xfs_has_rtgroups(nmp)) + nmp->m_sb.sb_rgcount = howmany_64(nmp->m_sb.sb_rextents, + nmp->m_sb.sb_rgextents); + else + nmp->m_sb.sb_rgcount = 1; nmp->m_rsumblocks = xfs_rtsummary_blockcount(nmp, &nmp->m_rsumlevels); if (rblocks > 0) @@ -761,6 +766,26 @@ xfs_growfs_rt_alloc_fake_mount( return nmp; } +static xfs_rfsblock_t +xfs_growfs_rt_nrblocks( + struct xfs_rtgroup *rtg, + xfs_rfsblock_t nrblocks, + xfs_agblock_t rextsize, + xfs_fileoff_t bmbno) +{ + struct xfs_mount *mp = rtg_mount(rtg); + xfs_rfsblock_t step; + + step = (bmbno + 1) * NBBY * mp->m_sb.sb_blocksize * rextsize; + if (xfs_has_rtgroups(mp)) { + xfs_rfsblock_t rgblocks = mp->m_sb.sb_rgextents * rextsize; + + step = min(rgblocks, step) + rgblocks * rtg_rgno(rtg); + } + + return min(nrblocks, step); +} + static int xfs_growfs_rt_bmblock( struct xfs_rtgroup *rtg, @@ -779,16 +804,15 @@ xfs_growfs_rt_bmblock( .rtg = rtg, }; struct xfs_mount *nmp; - xfs_rfsblock_t nrblocks_step; xfs_rtbxlen_t freed_rtx; int error; /* * Calculate new sb and mount fields for this round. */ - nrblocks_step = (bmbno + 1) * NBBY * mp->m_sb.sb_blocksize * rextsize; nmp = nargs.mp = xfs_growfs_rt_alloc_fake_mount(mp, - min(nrblocks, nrblocks_step), rextsize); + xfs_growfs_rt_nrblocks(rtg, nrblocks, rextsize, bmbno), + rextsize); if (!nmp) return -ENOMEM; |