diff options
| author | Josef Bacik <jbacik@fb.com> | 2015-02-11 15:08:59 -0500 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-02-14 08:22:48 -0800 |
| commit | dcab6a3b2ae657a2017637083c28ee303b6b1b8e (patch) | |
| tree | 4aa9951e7ab997702f90aec9882f305e1885fc40 /fs/btrfs/extent_io.c | |
| parent | 3266789f9d08b27275bae5ab1dcd27d1bbf15e79 (diff) | |
Btrfs: account for large extents with enospc
On our gluster boxes we stream large tar balls of backups onto our fses. With
160gb of ram this means we get really large contiguous ranges of dirty data, but
the way our ENOSPC stuff works is that as long as it's contiguous we only hold
metadata reservation for one extent. The problem is we limit our extents to
128mb, so we'll end up with at least 800 extents so our enospc accounting is
quite a bit lower than what we need. To keep track of this make sure we
increase outstanding_extents for every multiple of the max extent size so we can
be sure to have enough reserved metadata space. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a7f66009519a..29850d4a3827 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3242,7 +3242,7 @@ static noinline_for_stack int writepage_delalloc(struct inode *inode, page, &delalloc_start, &delalloc_end, - 128 * 1024 * 1024); + BTRFS_MAX_EXTENT_SIZE); if (nr_delalloc == 0) { delalloc_start = delalloc_end + 1; continue; |