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gfs2: Lock holder cleanup

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Make the code more readable by cleaning up the different ways of
initializing lock holders and checking for initialized lock holders:
mark lock holders as uninitialized by setting the holder's glock to NULL
(gfs2_holder_mark_uninitialized) instead of zeroing out the entire
object or using a separate flag.  Recognize initialized holders by their
non-NULL glock (gfs2_holder_initialized).  Don't zero out holder objects
which are immeditiately initialized via gfs2_holder_init or
gfs2_glock_nq_init.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Andreas Gruenbacher
2016-06-17 07:31:27 -05:00
committed by Bob Peterson
parent cda9dd4207
commit 6df9f9a253
9 changed files with 46 additions and 35 deletions
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4
fs/gfs2/rgrp.c
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@@ -2100,7 +2100,7 @@ void gfs2_inplace_release(struct gfs2_inode *ip)
{
struct gfs2_blkreserv *rs = &ip->i_res;
if (rs->rs_rgd_gh.gh_gl)
if (gfs2_holder_initialized(&rs->rs_rgd_gh))
gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
}
@@ -2600,7 +2600,7 @@ void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state)
{
unsigned int x;
rlist->rl_ghs = kcalloc(rlist->rl_rgrps, sizeof(struct gfs2_holder),
rlist->rl_ghs = kmalloc(rlist->rl_rgrps * sizeof(struct gfs2_holder),
GFP_NOFS | __GFP_NOFAIL);
for (x = 0; x < rlist->rl_rgrps; x++)
gfs2_holder_init(rlist->rl_rgd[x]->rd_gl,