From 7ee9e4405f264e9eda808aa5ca4522746a1af9c1 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 21 Jun 2013 16:37:03 -0400 Subject: Btrfs: check if we can nocow if we don't have data space We always just try and reserve data space when we write, but if we are out of space but have prealloc'ed extents we should still successfully write. This patch will try and see if we can write to prealloc'ed space and if we can go ahead and allow the write to continue. With this patch we now pass xfstests generic/274. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/extent_io.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/btrfs/extent_io.h') diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 41fb81e7ec53..3b8c4e26e1da 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -19,6 +19,7 @@ #define EXTENT_FIRST_DELALLOC (1 << 12) #define EXTENT_NEED_WAIT (1 << 13) #define EXTENT_DAMAGED (1 << 14) +#define EXTENT_NORESERVE (1 << 15) #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) #define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC) -- cgit v1.2.3