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[v3,10/10] btrfs: add NR_METADATA_BYTES accounting

Message ID 1513029335-5112-11-git-send-email-josef@toxicpanda.com (mailing list archive)
State New, archived
Headers show

Commit Message

Josef Bacik Dec. 11, 2017, 9:55 p.m. UTC 
From: Josef Bacik <jbacik@fb.com>

Now that we have these counters, account for the private pages we
allocate in NR_METADATA_BYTES.

Signed-off-by: Josef Bacik <jbacik@fb.com>
---
 fs/btrfs/extent_io.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index e11372455fb0..7536352f424d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4802,6 +4802,8 @@  static void btrfs_release_extent_buffer_page(struct extent_buffer *eb)
 		ClearPagePrivate(page);
 		set_page_private(page, 0);
 
+		mod_node_page_state(page_pgdat(page), NR_METADATA_BYTES,
+				    -(long)PAGE_SIZE);
 		/* Once for the page private. */
 		put_page(page);
 
@@ -5081,6 +5083,8 @@  struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
 			goto free_eb;
 		}
 		attach_extent_buffer_page(eb, p);
+		mod_node_page_state(page_pgdat(p), NR_METADATA_BYTES,
+				    PAGE_SIZE);
 		eb->pages[i] = p;
 	}
 again: