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Subject[ 18/75] Revert "Btrfs: increase the global block reserve estimates"
3.3-stable review patch.  If anyone has any objections, please let me know.

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

From: Chris Mason <chris.mason@oracle.com>

commit 8e62c2de6e23e5c1fee04f59de51b54cc2868ca5 upstream.

This reverts commit 5500cdbe14d7435e04f66ff3cfb8ecd8b8e44ebf.

We've had a number of complaints of early enospc that bisect down
to this patch. We'll hae to fix the reservations differently.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
fs/btrfs/extent-tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4110,7 +4110,7 @@ static u64 calc_global_metadata_size(str
num_bytes += div64_u64(data_used + meta_used, 50);

if (num_bytes * 3 > meta_used)
- num_bytes = div64_u64(meta_used, 3) * 2;
+ num_bytes = div64_u64(meta_used, 3);

return ALIGN(num_bytes, fs_info->extent_root->leafsize << 10);
}



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