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| author | Steven Whitehouse <swhiteho@redhat.com> | 2017-12-22 13:13:07 +0100 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2018-01-17 14:34:24 +0100 |
| commit | 90bcab998dcadc8a1515994b558da10631298bf3 (patch) | |
| tree | aac4aa81ba971325babc502841831671811030e7 /fs/gfs2/rgrp.c | |
| parent | Linux 4.15-rc4 (diff) | |
| download | linux-90bcab998dcadc8a1515994b558da10631298bf3.tar.xz linux-90bcab998dcadc8a1515994b558da10631298bf3.zip | |
gfs2: Add gfs2_blk2rgrpd comment and fix incorrect use
Document when to use gfs2_blk2rgrpd for "inexact" resource group
matching. Based on that, fix an incorrect use of gfs2_blk2rgrpd in
sweep_bh_for_rgrps.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/rgrp.c')
| -rw-r--r-- | fs/gfs2/rgrp.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 95b2a57ded33..211d7a5fa10f 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -489,6 +489,13 @@ 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 */ |