diff options
| -rw-r--r-- | fs/ocfs2/alloc.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index b3321de88d2b..9a876bb07cac 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -7561,6 +7561,7 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) struct buffer_head *gd_bh = NULL; struct ocfs2_dinode *main_bm; struct ocfs2_group_desc *gd = NULL; + struct ocfs2_trim_fs_info info, *pinfo = NULL; start = range->start >> osb->s_clustersize_bits; len = range->len >> osb->s_clustersize_bits; @@ -7598,6 +7599,42 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) trace_ocfs2_trim_fs(start, len, minlen); + ocfs2_trim_fs_lock_res_init(osb); + ret = ocfs2_trim_fs_lock(osb, NULL, 1); + if (ret < 0) { + if (ret != -EAGAIN) { + mlog_errno(ret); + ocfs2_trim_fs_lock_res_uninit(osb); + goto out_unlock; + } + + mlog(ML_NOTICE, "Wait for trim on device (%s) to " + "finish, which is running from another node.\n", + osb->dev_str); + ret = ocfs2_trim_fs_lock(osb, &info, 0); + if (ret < 0) { + mlog_errno(ret); + ocfs2_trim_fs_lock_res_uninit(osb); + goto out_unlock; + } + + if (info.tf_valid && info.tf_success && + info.tf_start == start && info.tf_len == len && + info.tf_minlen == minlen) { + /* Avoid sending duplicated trim to a shared device */ + mlog(ML_NOTICE, "The same trim on device (%s) was " + "just done from node (%u), return.\n", + osb->dev_str, info.tf_nodenum); + range->len = info.tf_trimlen; + goto out_trimunlock; + } + } + + info.tf_nodenum = osb->node_num; + info.tf_start = start; + info.tf_len = len; + info.tf_minlen = minlen; + /* Determine first and last group to examine based on start and len */ first_group = ocfs2_which_cluster_group(main_bm_inode, start); if (first_group == osb->first_cluster_group_blkno) @@ -7642,6 +7679,13 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) group += ocfs2_clusters_to_blocks(sb, osb->bitmap_cpg); } range->len = trimmed * sb->s_blocksize; + + info.tf_trimlen = range->len; + info.tf_success = (ret ? 0 : 1); + pinfo = &info; +out_trimunlock: + ocfs2_trim_fs_unlock(osb, pinfo); + ocfs2_trim_fs_lock_res_uninit(osb); out_unlock: ocfs2_inode_unlock(main_bm_inode, 0); brelse(main_bm_bh); |