summaryrefslogtreecommitdiff
path: root/fs/gfs2/rgrp.c
diff options
context:
space:
mode:
authorBob Peterson <rpeterso@redhat.com>2018-01-18 14:17:13 -0700
committerBob Peterson <rpeterso@redhat.com>2018-01-18 14:17:13 -0700
commit786ebd9f68cdf512f389e5f2d0015f1beb0777d8 (patch)
treeb4bae82884c2232f891aec11e58b38eb4fec5e5d /fs/gfs2/rgrp.c
parent1f23bc7869fffec40b8bd9333a74a18d1de54d98 (diff)
parent4e56a6411fbce6f859566e17298114c2434391a4 (diff)
Merge branch 'punch-hole' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
Diffstat (limited to 'fs/gfs2/rgrp.c')
-rw-r--r--fs/gfs2/rgrp.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index e8aba6fa1472..6dea72f49316 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -490,6 +490,13 @@ void gfs2_rgrp_verify(struct gfs2_rgrpd *rgd)
* @blk: The data block number
* @exact: True if this needs to be an exact match
*
+ * The @exact argument should be set to true by most callers. The exception
+ * is when we need to match blocks which are not represented by the rgrp
+ * bitmap, but which are part of the rgrp (i.e. padding blocks) which are
+ * there for alignment purposes. Another way of looking at it is that @exact
+ * matches only valid data/metadata blocks, but with @exact false, it will
+ * match any block within the extent of the rgrp.
+ *
* Returns: The resource group, or NULL if not found
*/