From: wang di <di.wang@xxxxxxxxx> Normally we know the value of op_mea1 when ll_readdir is called. In the case of '.' or '..' op_mea1 is unknown so for that case fetch the real parents FID. Signed-off-by: wang di <di.wang@xxxxxxxxx> Signed-off-by: Li Xi <lixi@xxxxxxx> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4603 Reviewed-on: http://review.whamcloud.com/9191 Reviewed-by: John L. Hammond <john.hammond@xxxxxxxxx> Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Reviewed-by: Fan Yong <fan.yong@xxxxxxxxx> Reviewed-by: Li Xi <pkuelelixi@xxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> --- drivers/staging/lustre/lustre/llite/dir.c | 27 +++++++++++++++++ .../staging/lustre/lustre/llite/llite_internal.h | 1 + drivers/staging/lustre/lustre/llite/llite_nfs.c | 31 ++++++++++++++------ 3 files changed, 50 insertions(+), 9 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index 924b5df..3fed80d 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -622,6 +622,33 @@ static int ll_readdir(struct file *filp, struct dir_context *ctx) goto out; } + if (unlikely(op_data->op_mea1)) { + /* + * This is only needed for striped dir to fill .., + * see lmv_read_page + */ + if (file_dentry(filp)->d_parent && + file_dentry(filp)->d_parent->d_inode) { + __u64 ibits = MDS_INODELOCK_UPDATE; + struct inode *parent; + + parent = file_dentry(filp)->d_parent->d_inode; + if (ll_have_md_lock(parent, &ibits, LCK_MINMODE)) + op_data->op_fid3 = *ll_inode2fid(parent); + } + + /* + * If it can not find in cache, do lookup .. on the master + * object + */ + if (fid_is_zero(&op_data->op_fid3)) { + rc = ll_dir_get_parent_fid(inode, &op_data->op_fid3); + if (rc) { + ll_finish_md_op_data(op_data); + return rc; + } + } + } ctx->pos = pos; rc = ll_dir_read(inode, &pos, op_data, ctx); pos = ctx->pos; diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h index 3d7fa9a..43269aa 100644 --- a/drivers/staging/lustre/lustre/llite/llite_internal.h +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h @@ -812,6 +812,7 @@ __u32 get_uuid2int(const char *name, int len); void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid); struct inode *search_inode_for_lustre(struct super_block *sb, const struct lu_fid *fid); +int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid); /* llite/symlink.c */ extern const struct inode_operations ll_fast_symlink_inode_operations; diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c index ab9d5cc..06a8199 100644 --- a/drivers/staging/lustre/lustre/llite/llite_nfs.c +++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c @@ -302,14 +302,12 @@ static struct dentry *ll_fh_to_parent(struct super_block *sb, struct fid *fid, return ll_iget_for_nfs(sb, &nfs_fid->lnf_parent, NULL); } -static struct dentry *ll_get_parent(struct dentry *dchild) +int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid) { struct ptlrpc_request *req = NULL; - struct inode *dir = d_inode(dchild); struct ll_sb_info *sbi; - struct dentry *result = NULL; struct mdt_body *body; - static char dotdot[] = ".."; + static const char dotdot[] = ".."; struct md_op_data *op_data; int rc; int lmmsize; @@ -324,13 +322,13 @@ static struct dentry *ll_get_parent(struct dentry *dchild) rc = ll_get_default_mdsize(sbi, &lmmsize); if (rc != 0) - return ERR_PTR(rc); + return rc; op_data = ll_prep_md_op_data(NULL, dir, NULL, dotdot, strlen(dotdot), lmmsize, LUSTRE_OPC_ANY, NULL); if (IS_ERR(op_data)) - return (void *)op_data; + return PTR_ERR(op_data); rc = md_getattr_name(sbi->ll_md_exp, op_data, &req); ll_finish_md_op_data(op_data); @@ -338,7 +336,7 @@ static struct dentry *ll_get_parent(struct dentry *dchild) CERROR("%s: failure inode "DFID" get parent: rc = %d\n", ll_get_fsname(dir->i_sb, NULL, 0), PFID(ll_inode2fid(dir)), rc); - return ERR_PTR(rc); + return rc; } body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); /* @@ -348,11 +346,26 @@ static struct dentry *ll_get_parent(struct dentry *dchild) if (body->valid & OBD_MD_FLID) { CDEBUG(D_INFO, "parent for " DFID " is " DFID "\n", PFID(ll_inode2fid(dir)), PFID(&body->fid1)); + *parent_fid = body->fid1; } - result = ll_iget_for_nfs(dir->i_sb, &body->fid1, NULL); ptlrpc_req_finished(req); - return result; + return 0; +} + +static struct dentry *ll_get_parent(struct dentry *dchild) +{ + struct lu_fid parent_fid = { 0 }; + struct dentry *dentry; + int rc; + + rc = ll_dir_get_parent_fid(dchild->d_inode, &parent_fid); + if (rc) + return ERR_PTR(rc); + + dentry = ll_iget_for_nfs(dchild->d_inode->i_sb, &parent_fid, NULL); + + return dentry; } const struct export_operations lustre_export_operations = { -- 1.7.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
