4.9-stable review patch.  If anyone has any objections, please let me know.

------------------


From: Eric Sandeen <[email protected]>

commit 200237d6746faaeaf7f4ff4abbf13f3917cee60a upstream.

We've missed properly setting the buffer type for
an AGI transaction in 3 spots now, so just move it
into xfs_read_agi() and set it if we are in a transaction
to avoid the problem in the future.

This is similar to how it is done in i.e. the dir3
and attr3 read functions.

Signed-off-by: Eric Sandeen <[email protected]>
Reviewed-by: Brian Foster <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Dave Chinner <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 fs/xfs/libxfs/xfs_ialloc.c |    4 ++--
 fs/xfs/xfs_inode.c         |    2 --
 fs/xfs/xfs_log_recover.c   |    1 -
 3 files changed, 2 insertions(+), 5 deletions(-)

--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -2450,8 +2450,6 @@ xfs_ialloc_log_agi(
        ASSERT(agi->agi_magicnum == cpu_to_be32(XFS_AGI_MAGIC));
 #endif
 
-       xfs_trans_buf_set_type(tp, bp, XFS_BLFT_AGI_BUF);
-
        /*
         * Compute byte offsets for the first and last fields in the first
         * region and log the agi buffer. This only logs up through
@@ -2592,6 +2590,8 @@ xfs_read_agi(
                        XFS_FSS_TO_BB(mp, 1), 0, bpp, &xfs_agi_buf_ops);
        if (error)
                return error;
+       if (tp)
+               xfs_trans_buf_set_type(tp, *bpp, XFS_BLFT_AGI_BUF);
 
        xfs_buf_set_ref(*bpp, XFS_AGI_REF);
        return 0;
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2041,7 +2041,6 @@ xfs_iunlink(
        agi->agi_unlinked[bucket_index] = cpu_to_be32(agino);
        offset = offsetof(xfs_agi_t, agi_unlinked) +
                (sizeof(xfs_agino_t) * bucket_index);
-       xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
        xfs_trans_log_buf(tp, agibp, offset,
                          (offset + sizeof(xfs_agino_t) - 1));
        return 0;
@@ -2133,7 +2132,6 @@ xfs_iunlink_remove(
                agi->agi_unlinked[bucket_index] = cpu_to_be32(next_agino);
                offset = offsetof(xfs_agi_t, agi_unlinked) +
                        (sizeof(xfs_agino_t) * bucket_index);
-               xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
                xfs_trans_log_buf(tp, agibp, offset,
                                  (offset + sizeof(xfs_agino_t) - 1));
        } else {
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -4929,7 +4929,6 @@ xlog_recover_clear_agi_bucket(
        agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
        offset = offsetof(xfs_agi_t, agi_unlinked) +
                 (sizeof(xfs_agino_t) * bucket);
-       xfs_trans_buf_set_type(tp, agibp, XFS_BLFT_AGI_BUF);
        xfs_trans_log_buf(tp, agibp, offset,
                          (offset + sizeof(xfs_agino_t) - 1));
 


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