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Commit 5575eeb7 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 

Pull Ceph fixes from Sage Weil:
 "First, there is a critical fix for the new primary-affinity function
  that went into -rc1.

  The second batch of patches from Zheng fix a range of problems with
  directory fragmentation, readdir, and a few odds and ends for cephfs"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: reserve caps for file layout/lock MDS requests
  ceph: avoid releasing caps that are being used
  ceph: clear directory's completeness when creating file
  libceph: fix non-default values check in apply_primary_affinity()
  ceph: use fpos_cmp() to compare dentry positions
  ceph: check directory's completeness before emitting directory entry
parents 0624bcaa 3bd58143

fs/ceph/caps.c

+1 −1
Original line number Diff line number Diff line
@@ -3261,7 +3261,7 @@ int ceph_encode_inode_release(void **p, struct inode *inode, 
			rel->seq = cpu_to_le32(cap->seq);

			rel->issue_seq = cpu_to_le32(cap->issue_seq),

			rel->mseq = cpu_to_le32(cap->mseq);

			rel->caps = cpu_to_le32(cap->issued);

			rel->caps = cpu_to_le32(cap->implemented);

			rel->wanted = cpu_to_le32(cap->mds_wanted);

			rel->dname_len = 0;

			rel->dname_seq = 0;

fs/ceph/dir.c

+18 −15
Original line number Diff line number Diff line
@@ -141,7 +141,7 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx, 


	/* start at beginning? */

	if (ctx->pos == 2 || last == NULL ||

	    ctx->pos < ceph_dentry(last)->offset) {

	    fpos_cmp(ctx->pos, ceph_dentry(last)->offset) < 0) {

		if (list_empty(&parent->d_subdirs))

			goto out_unlock;

		p = parent->d_subdirs.prev;
@@ -182,9 +182,16 @@ more: 
	spin_unlock(&dentry->d_lock);

	spin_unlock(&parent->d_lock);



	/* make sure a dentry wasn't dropped while we didn't have parent lock */

	if (!ceph_dir_is_complete(dir)) {

		dout(" lost dir complete on %p; falling back to mds\n", dir);

		dput(dentry);

		err = -EAGAIN;

		goto out;

	}



	dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, ctx->pos,

	     dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode);

	ctx->pos = di->offset;

	if (!dir_emit(ctx, dentry->d_name.name,

		      dentry->d_name.len,

		      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
@@ -198,19 +205,12 @@ more: 
		return 0;

	}



	ctx->pos = di->offset + 1;



	if (last)

		dput(last);

	last = dentry;



	ctx->pos++;



	/* make sure a dentry wasn't dropped while we didn't have parent lock */

	if (!ceph_dir_is_complete(dir)) {

		dout(" lost dir complete on %p; falling back to mds\n", dir);

		err = -EAGAIN;

		goto out;

	}



	spin_lock(&parent->d_lock);

	p = p->prev;	/* advance to next dentry */

	goto more;
@@ -296,6 +296,8 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx) 
		err = __dcache_readdir(file, ctx, shared_gen);

		if (err != -EAGAIN)

			return err;

		frag = fpos_frag(ctx->pos);

		off = fpos_off(ctx->pos);

	} else {

		spin_unlock(&ci->i_ceph_lock);

	}
@@ -446,7 +448,6 @@ more: 
	if (atomic_read(&ci->i_release_count) == fi->dir_release_count) {

		dout(" marking %p complete\n", inode);

		__ceph_dir_set_complete(ci, fi->dir_release_count);

		ci->i_max_offset = ctx->pos;

	}

	spin_unlock(&ci->i_ceph_lock);
@@ -935,14 +936,16 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, 
		 * to do it here.

		 */



		/* d_move screws up d_subdirs order */

		ceph_dir_clear_complete(new_dir);



		d_move(old_dentry, new_dentry);



		/* ensure target dentry is invalidated, despite

		   rehashing bug in vfs_rename_dir */

		ceph_invalidate_dentry_lease(new_dentry);



		/* d_move screws up sibling dentries' offsets */

		ceph_dir_clear_complete(old_dir);

		ceph_dir_clear_complete(new_dir);



	}

	ceph_mdsc_put_request(req);

	return err;

fs/ceph/inode.c

+16 −55
Original line number Diff line number Diff line
@@ -744,7 +744,6 @@ static int fill_inode(struct inode *inode, 
	    !__ceph_dir_is_complete(ci)) {

		dout(" marking %p complete (empty)\n", inode);

		__ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count));

		ci->i_max_offset = 2;

	}

no_change:

	/* only update max_size on auth cap */
@@ -889,41 +888,6 @@ out_unlock: 
	return;

}



/*

 * Set dentry's directory position based on the current dir's max, and

 * order it in d_subdirs, so that dcache_readdir behaves.

 *

 * Always called under directory's i_mutex.

 */

static void ceph_set_dentry_offset(struct dentry *dn)

{

	struct dentry *dir = dn->d_parent;

	struct inode *inode = dir->d_inode;

	struct ceph_inode_info *ci;

	struct ceph_dentry_info *di;



	BUG_ON(!inode);



	ci = ceph_inode(inode);

	di = ceph_dentry(dn);



	spin_lock(&ci->i_ceph_lock);

	if (!__ceph_dir_is_complete(ci)) {

		spin_unlock(&ci->i_ceph_lock);

		return;

	}

	di->offset = ceph_inode(inode)->i_max_offset++;

	spin_unlock(&ci->i_ceph_lock);



	spin_lock(&dir->d_lock);

	spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);

	list_move(&dn->d_u.d_child, &dir->d_subdirs);

	dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,

	     dn->d_u.d_child.prev, dn->d_u.d_child.next);

	spin_unlock(&dn->d_lock);

	spin_unlock(&dir->d_lock);

}



/*

 * splice a dentry to an inode.

 * caller must hold directory i_mutex for this to be safe.
@@ -933,7 +897,7 @@ static void ceph_set_dentry_offset(struct dentry *dn) 
 * the caller) if we fail.

 */

static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,

				    bool *prehash, bool set_offset)

				    bool *prehash)

{

	struct dentry *realdn;
@@ -965,8 +929,6 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, 
	}

	if ((!prehash || *prehash) && d_unhashed(dn))

		d_rehash(dn);

	if (set_offset)

		ceph_set_dentry_offset(dn);

out:

	return dn;

}
@@ -987,7 +949,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, 
{

	struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;

	struct inode *in = NULL;

	struct ceph_mds_reply_inode *ininfo;

	struct ceph_vino vino;

	struct ceph_fs_client *fsc = ceph_sb_to_client(sb);

	int err = 0;
@@ -1161,6 +1122,9 @@ retry_lookup: 


		/* rename? */

		if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) {

			struct inode *olddir = req->r_old_dentry_dir;

			BUG_ON(!olddir);



			dout(" src %p '%.*s' dst %p '%.*s'\n",

			     req->r_old_dentry,

			     req->r_old_dentry->d_name.len,
@@ -1180,13 +1144,10 @@ retry_lookup: 
			   rehashing bug in vfs_rename_dir */

			ceph_invalidate_dentry_lease(dn);



			/*

			 * d_move() puts the renamed dentry at the end of

			 * d_subdirs.  We need to assign it an appropriate

			 * directory offset so we can behave when dir is

			 * complete.

			 */

			ceph_set_dentry_offset(req->r_old_dentry);

			/* d_move screws up sibling dentries' offsets */

			ceph_dir_clear_complete(dir);

			ceph_dir_clear_complete(olddir);



			dout("dn %p gets new offset %lld\n", req->r_old_dentry,

			     ceph_dentry(req->r_old_dentry)->offset);
@@ -1213,8 +1174,9 @@ retry_lookup: 


		/* attach proper inode */

		if (!dn->d_inode) {

			ceph_dir_clear_complete(dir);

			ihold(in);

			dn = splice_dentry(dn, in, &have_lease, true);

			dn = splice_dentry(dn, in, &have_lease);

			if (IS_ERR(dn)) {

				err = PTR_ERR(dn);

				goto done;
@@ -1235,17 +1197,16 @@ retry_lookup: 
		   (req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||

		    req->r_op == CEPH_MDS_OP_MKSNAP)) {

		struct dentry *dn = req->r_dentry;

		struct inode *dir = req->r_locked_dir;



		/* fill out a snapdir LOOKUPSNAP dentry */

		BUG_ON(!dn);

		BUG_ON(!req->r_locked_dir);

		BUG_ON(ceph_snap(req->r_locked_dir) != CEPH_SNAPDIR);

		ininfo = rinfo->targeti.in;

		vino.ino = le64_to_cpu(ininfo->ino);

		vino.snap = le64_to_cpu(ininfo->snapid);

		BUG_ON(!dir);

		BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR);

		dout(" linking snapped dir %p to dn %p\n", in, dn);

		ceph_dir_clear_complete(dir);

		ihold(in);

		dn = splice_dentry(dn, in, NULL, true);

		dn = splice_dentry(dn, in, NULL);

		if (IS_ERR(dn)) {

			err = PTR_ERR(dn);

			goto done;
@@ -1407,7 +1368,7 @@ retry_lookup: 
		}



		if (!dn->d_inode) {

			dn = splice_dentry(dn, in, NULL, false);

			dn = splice_dentry(dn, in, NULL);

			if (IS_ERR(dn)) {

				err = PTR_ERR(dn);

				dn = NULL;

fs/ceph/ioctl.c

+3 −0
Original line number Diff line number Diff line
@@ -109,6 +109,8 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) 
		return PTR_ERR(req);

	req->r_inode = inode;

	ihold(inode);

	req->r_num_caps = 1;



	req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL;



	req->r_args.setlayout.layout.fl_stripe_unit =
@@ -153,6 +155,7 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) 
		return PTR_ERR(req);

	req->r_inode = inode;

	ihold(inode);

	req->r_num_caps = 1;



	req->r_args.setlayout.layout.fl_stripe_unit =

			cpu_to_le32(l.stripe_unit);

fs/ceph/locks.c

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, 
		return PTR_ERR(req);

	req->r_inode = inode;

	ihold(inode);

	req->r_num_caps = 1;



	/* mds requires start and length rather than start and end */

	if (LLONG_MAX == fl->fl_end)