diff options
| author | Dave Chinner <dchinner@redhat.com> | 2012-11-12 12:54:00 +0100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-11-13 23:40:59 +0100 |
| commit | de497688daaabbab425a8a969528272ec1d962a6 (patch) | |
| tree | 31721e42e4d6382d338867f18f70dfd0bb09fa9e /fs/xfs | |
| parent | xfs: growfs: use uncached buffers for new headers (diff) | |
| download | linux-de497688daaabbab425a8a969528272ec1d962a6.tar.xz linux-de497688daaabbab425a8a969528272ec1d962a6.zip | |
xfs: make growfs initialise the AGFL header
For verification purposes, AGFLs need to be initialised to a known
set of values. For upcoming CRC changes, they are also headers that
need to be initialised. Currently, growfs does neither for the AGFLs
- it ignores them completely. Add initialisation of the AGFL to be
full of invalid block numbers (NULLAGBLOCK) to put the
infrastructure in place needed for CRC support.
Includes a comment clarification from Jeff Liu.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by Rich Johnston <rjohnston@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_fsops.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index 2196830bf5c0..bd9cb7f0b073 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -140,6 +140,7 @@ xfs_growfs_data_private( xfs_growfs_data_t *in) /* growfs data input struct */ { xfs_agf_t *agf; + struct xfs_agfl *agfl; xfs_agi_t *agi; xfs_agnumber_t agno; xfs_extlen_t agsize; @@ -207,7 +208,7 @@ xfs_growfs_data_private( nfree = 0; for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { /* - * AG freelist header block + * AG freespace header block */ bp = xfs_growfs_get_hdr_buf(mp, XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), @@ -244,6 +245,26 @@ xfs_growfs_data_private( goto error0; /* + * AG freelist header block + */ + bp = xfs_growfs_get_hdr_buf(mp, + XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), + XFS_FSS_TO_BB(mp, 1), 0); + if (!bp) { + error = ENOMEM; + goto error0; + } + + agfl = XFS_BUF_TO_AGFL(bp); + for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) + agfl->agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); + + error = xfs_bwrite(bp); + xfs_buf_relse(bp); + if (error) + goto error0; + + /* * AG inode header block */ bp = xfs_growfs_get_hdr_buf(mp, |