From: Dave Chinner <dchinner@xxxxxxxxxx>
For verification purposes, AGFLs need to be initialised to a known
set of values. For upcoming CRC changes, the 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.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
fs/xfs/xfs_alloc.c | 2 +-
fs/xfs/xfs_alloc.h | 1 +
fs/xfs/xfs_fsops.c | 21 +++++++++++++++++++++
3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 8517e69..5b2357e 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -479,7 +479,7 @@ xfs_agfl_read_verify(
xfs_agfl_verify(bp);
}
-static const struct xfs_buf_ops xfs_agfl_buf_ops = {
+const struct xfs_buf_ops xfs_agfl_buf_ops = {
.verify_read = xfs_agfl_read_verify,
.verify_write = xfs_agfl_write_verify,
};
diff --git a/fs/xfs/xfs_alloc.h b/fs/xfs/xfs_alloc.h
index 786e1b8..a197b3c 100644
--- a/fs/xfs/xfs_alloc.h
+++ b/fs/xfs/xfs_alloc.h
@@ -239,5 +239,6 @@ xfs_alloc_freespace_map(
u64 length);
extern const struct xfs_buf_ops xfs_agf_buf_ops;
+extern const struct xfs_buf_ops xfs_agfl_buf_ops;
#endif /* __XFS_ALLOC_H__ */
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 717b803..2f7d11e 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;
@@ -249,6 +250,26 @@ xfs_growfs_data_private(
goto error0;
/*
+ * AGFL 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, &xfs_agfl_buf_ops);
+ 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,
--
1.7.10
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