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ocfs2/dlm: Move kmalloc() outside the spinlock

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In dlm_query_region_handler(), move the kmalloc outside the spinlock.
This allows us to use GFP_KERNEL instead of GFP_ATOMIC.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
This commit is contained in:
Sunil Mushran 2011-02-21 14:25:25 -08:00 committed by Joel Becker
parent 1936a267f1
commit 770c4d81e0
1 changed files with 16 additions and 12 deletions
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28
fs/ocfs2/dlm/dlmdomain.c
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@ -926,9 +926,10 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
}
static int dlm_match_regions(struct dlm_ctxt *dlm,
struct dlm_query_region *qr)
struct dlm_query_region *qr,
char *local, int locallen)
{
char *local = NULL, *remote = qr->qr_regions;
char *remote = qr->qr_regions;
char *l, *r;
int localnr, i, j, foundit;
int status = 0;
@ -957,13 +958,8 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
r += O2HB_MAX_REGION_NAME_LEN;
}
local = kmalloc(sizeof(qr->qr_regions), GFP_ATOMIC);
if (!local) {
status = -ENOMEM;
goto bail;
}
localnr = o2hb_get_all_regions(local, O2NM_MAX_REGIONS);
localnr = min(O2NM_MAX_REGIONS, locallen/O2HB_MAX_REGION_NAME_LEN);
localnr = o2hb_get_all_regions(local, (u8)localnr);
/* compare local regions with remote */
l = local;
@ -1012,8 +1008,6 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
}
bail:
kfree(local);
return status;
}
@ -1075,6 +1069,7 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
{
struct dlm_query_region *qr;
struct dlm_ctxt *dlm = NULL;
char *local = NULL;
int status = 0;
int locked = 0;
@ -1083,6 +1078,13 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
mlog(0, "Node %u queries hb regions on domain %s\n", qr->qr_node,
qr->qr_domain);
/* buffer used in dlm_mast_regions() */
local = kmalloc(sizeof(qr->qr_regions), GFP_KERNEL);
if (!local) {
status = -ENOMEM;
goto bail;
}
status = -EINVAL;
spin_lock(&dlm_domain_lock);
@ -1112,13 +1114,15 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
goto bail;
}
status = dlm_match_regions(dlm, qr);
status = dlm_match_regions(dlm, qr, local, sizeof(qr->qr_regions));
bail:
if (locked)
spin_unlock(&dlm->spinlock);
spin_unlock(&dlm_domain_lock);
kfree(local);
return status;
}