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authorDavid Teigland <teigland@redhat.com>2009-11-30 16:34:43 -0600
committerDavid Teigland <teigland@redhat.com>2009-11-30 16:34:43 -0600
commit573c24c4af6664ffcd9aa7ba617a35fde2b95534 (patch)
tree9222c0c8921fda5b842c2d1007d911d47bd4fe7c /fs/dlm/member.c
parenta8a8a669ea13d792296737505adc43ccacf3a648 (diff)
downloadlwn-573c24c4af6664ffcd9aa7ba617a35fde2b95534.tar.gz
lwn-573c24c4af6664ffcd9aa7ba617a35fde2b95534.zip
dlm: always use GFP_NOFS
Replace all GFP_KERNEL and ls_allocation with GFP_NOFS. ls_allocation would be GFP_KERNEL for userland lockspaces and GFP_NOFS for file system lockspaces. It was discovered that any lockspaces on the system can affect all others by triggering memory reclaim in the file system which could in turn call back into the dlm to acquire locks, deadlocking dlm threads that were shared by all lockspaces, like dlm_recv. Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/member.c')
-rw-r--r--fs/dlm/member.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index b128775913b2..84f70bfb0baf 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -48,7 +48,7 @@ static int dlm_add_member(struct dlm_ls *ls, int nodeid)
struct dlm_member *memb;
int w, error;
- memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
+ memb = kzalloc(sizeof(struct dlm_member), GFP_NOFS);
if (!memb)
return -ENOMEM;
@@ -143,7 +143,7 @@ static void make_member_array(struct dlm_ls *ls)
ls->ls_total_weight = total;
- array = kmalloc(sizeof(int) * total, ls->ls_allocation);
+ array = kmalloc(sizeof(int) * total, GFP_NOFS);
if (!array)
return;
@@ -226,7 +226,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
continue;
log_debug(ls, "new nodeid %d is a re-added member", rv->new[i]);
- memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
+ memb = kzalloc(sizeof(struct dlm_member), GFP_NOFS);
if (!memb)
return -ENOMEM;
memb->nodeid = rv->new[i];
@@ -341,7 +341,7 @@ int dlm_ls_start(struct dlm_ls *ls)
int *ids = NULL, *new = NULL;
int error, ids_count = 0, new_count = 0;
- rv = kzalloc(sizeof(struct dlm_recover), ls->ls_allocation);
+ rv = kzalloc(sizeof(struct dlm_recover), GFP_NOFS);
if (!rv)
return -ENOMEM;