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author | Sunil Mushran <sunil.mushran@oracle.com> | 2011-02-21 22:25:25 (GMT) |
---|---|---|
committer | Joel Becker <jlbec@evilplan.org> | 2011-02-22 09:35:30 (GMT) |
commit | 770c4d81e0d2ca45516ddc9ae0a69565790b5533 (patch) | |
tree | 8a7fed6cf0b3870efacfbbaeb47929edd438494b /fs/ocfs2/dlm | |
parent | 1936a267f1b5a32d4a846608fdcce82ca0f6ac8e (diff) | |
download | linux-770c4d81e0d2ca45516ddc9ae0a69565790b5533.tar.xz |
ocfs2/dlm: Move kmalloc() outside the spinlock
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>
Diffstat (limited to 'fs/ocfs2/dlm')
-rw-r--r-- | fs/ocfs2/dlm/dlmdomain.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 7e38a07..99805d5 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -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; } |