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authorAndreas Gruenbacher <agruenba@redhat.com>2018-10-11 19:56:40 +0300
committerAndreas Gruenbacher <agruenba@redhat.com>2021-01-18 18:56:36 +0300
commitc65b76b893032a9fa69056656c771f5e2fc9ef0c (patch)
tree0bfd19a2bd528863574478f366570d1262d0ae67 /fs/gfs2/trans.h
parent0eacdd16adc425e61926876f15b58008aa5c4784 (diff)
downloadlinux-c65b76b893032a9fa69056656c771f5e2fc9ef0c.tar.xz
gfs2: Only use struct gfs2_rbm for bitmap manipulations
GFS2 uses struct gfs2_rbm to represent a filesystem block number as a bit position within a resource group. This representation is used in the bitmap manipulation code to prevent excessive conversions between block numbers and bit positions, but also in struct gfs2_blkreserv which is part of struct gfs2_inode, to mark the start of a reservation. In the inode, the bit position representation makes less sense: first, the start position is used as a block number about as often as a bit position; second, the bit position representation makes the code unnecessarily complicated and difficult to read. Therefore, change struct gfs2_blkreserv to represent the start of a reservation as a block number instead of a bit position. (This requires keeping track of the resource group in gfs2_blkreserv separately.) With that change, various things can be slightly simplified, and struct gfs2_rbm can be moved to rgrp.c. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/trans.h')
-rw-r--r--fs/gfs2/trans.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h
index 83199ce5a5c5..b812c4958dc4 100644
--- a/fs/gfs2/trans.h
+++ b/fs/gfs2/trans.h
@@ -27,7 +27,7 @@ struct gfs2_glock;
* block, or all of the blocks in the rg, whichever is smaller */
static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip, unsigned requested)
{
- struct gfs2_rgrpd *rgd = ip->i_res.rs_rbm.rgd;
+ struct gfs2_rgrpd *rgd = ip->i_res.rs_rgd;
if (requested < rgd->rd_length)
return requested + 1;