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Btrfs: Fine tune the btree writeback exclusion some more

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-11-27 07:52:01 -08:00
parent 8790bad7fb
commit 448d640b66
2 changed files with 6 additions and 1 deletions
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4
fs/btrfs/disk-io.c
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@@ -214,6 +214,10 @@ static int btree_writepages(struct address_space *mapping,
u64 num_dirty; u64 num_dirty;
u64 start = 0; u64 start = 0;
unsigned long thresh = 96 * 1024 * 1024; unsigned long thresh = 96 * 1024 * 1024;
if (wbc->for_kupdate)
return 0;
num_dirty = count_range_bits(tree, &start, thresh, EXTENT_DIRTY); num_dirty = count_range_bits(tree, &start, thresh, EXTENT_DIRTY);
if (num_dirty < thresh) { if (num_dirty < thresh) {
return 0; return 0;

1
fs/btrfs/file.c
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@@ -767,6 +767,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
num_written += write_bytes; num_written += write_bytes;
balance_dirty_pages_ratelimited_nr(inode->i_mapping, num_pages); balance_dirty_pages_ratelimited_nr(inode->i_mapping, num_pages);
if (num_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1)
btrfs_btree_balance_dirty(root, 1); btrfs_btree_balance_dirty(root, 1);
cond_resched(); cond_resched();
} }