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authorMark Fasheh <mark.fasheh@oracle.com>2007-03-20 20:17:54 -0400
committerMark Fasheh <mark.fasheh@oracle.com>2007-04-26 17:40:55 -0400
commit6f16bf655c5795586dd2ac96a7c70e0b9a378746 (patch)
tree60421c8d65c48de636e6ebb2b215a924fdd7fcd0 /fs
parent68e2b740c4b5394680cfefccddbdb486c5866a4c (diff)
ocfs2: small cleanup of ocfs2_request_delete()
There are two checks in there (one for inode newness, one for other mounted nodes) which are unnecessary, so remove them. The DLM will allow the trylock in either case without any messaging overhead. Removing these makes ocfs2_request_delete() a one liner function, so just move the trylock out one level into ocfs2_query_inode_wipe(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/inode.c46
1 files changed, 13 insertions, 33 deletions
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index e1e4882eab4f..08d57a3d4e83 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -767,35 +767,6 @@ bail:
767 return ret; 767 return ret;
768} 768}
769 769
770static int ocfs2_request_delete(struct inode *inode)
771{
772 int status = 0;
773 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
774
775 if (ocfs2_inode_is_new(inode))
776 return 0;
777
778 if (ocfs2_node_map_is_only(osb, &osb->mounted_map,
779 osb->node_num))
780 return 0;
781 /*
782 * This is how ocfs2 determines whether an inode is still live
783 * within the cluster. Every node takes a shared read lock on
784 * the inode open lock in ocfs2_read_locked_inode(). When we
785 * get to ->delete_inode(), each node tries to convert it's
786 * lock to an exclusive. Trylocks are serialized by the inode
787 * meta data lock. If the upconvert suceeds, we know the inode
788 * is no longer live and can be deleted.
789 *
790 * Though we call this with the meta data lock held, the
791 * trylock keeps us from ABBA deadlock.
792 */
793 status = ocfs2_try_open_lock(inode, 1);
794 if (status < 0 && status != -EAGAIN)
795 mlog_errno(status);
796 return status;
797}
798
799/* Query the cluster to determine whether we should wipe an inode from 770/* Query the cluster to determine whether we should wipe an inode from
800 * disk or not. 771 * disk or not.
801 * 772 *
@@ -848,10 +819,19 @@ static int ocfs2_query_inode_wipe(struct inode *inode,
848 goto bail; 819 goto bail;
849 } 820 }
850 821
851 status = ocfs2_request_delete(inode); 822 /*
852 /* -EAGAIN means that other nodes are still using the 823 * This is how ocfs2 determines whether an inode is still live
853 * inode. We're done here though, so avoid doing anything on 824 * within the cluster. Every node takes a shared read lock on
854 * disk and let them worry about deleting it. */ 825 * the inode open lock in ocfs2_read_locked_inode(). When we
826 * get to ->delete_inode(), each node tries to convert it's
827 * lock to an exclusive. Trylocks are serialized by the inode
828 * meta data lock. If the upconvert suceeds, we know the inode
829 * is no longer live and can be deleted.
830 *
831 * Though we call this with the meta data lock held, the
832 * trylock keeps us from ABBA deadlock.
833 */
834 status = ocfs2_try_open_lock(inode, 1);
855 if (status == -EAGAIN) { 835 if (status == -EAGAIN) {
856 status = 0; 836 status = 0;
857 mlog(0, "Skipping delete of %llu because it is in use on" 837 mlog(0, "Skipping delete of %llu because it is in use on"