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author | Andreas Gruenbacher <agruenba@redhat.com> | 2018-10-11 19:56:40 +0300 |
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committer | Andreas Gruenbacher <agruenba@redhat.com> | 2021-01-18 18:56:36 +0300 |
commit | c65b76b893032a9fa69056656c771f5e2fc9ef0c (patch) | |
tree | 0bfd19a2bd528863574478f366570d1262d0ae67 /fs/gfs2/trans.h | |
parent | 0eacdd16adc425e61926876f15b58008aa5c4784 (diff) | |
download | linux-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.h | 2 |
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; |