Commit e0b62e21 authored by Andreas Gruenbacher's avatar Andreas Gruenbacher Committed by Bob Peterson
Browse files

gfs2: gfs2_create_inode: Keep glock across iput 



On failure, keep the inode glock across the final iput of the new inode
so that gfs2_evict_inode doesn't have to re-acquire the glock.  That
way, gfs2_evict_inode won't need to revalidate the block type.

Signed-off-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
parent 6b0c7440

fs/gfs2/inode.c

+3 −1
Original line number Diff line number Diff line
@@ -608,6 +608,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 
	error = gfs2_glock_nq_init(dip->i_gl, LM_ST_EXCLUSIVE, 0, ghs);

	if (error)

		goto fail;

	gfs2_holder_mark_uninitialized(ghs + 1);



	error = create_ok(dip, name, mode);

	if (error)
@@ -779,7 +780,6 @@ fail_gunlock3: 
fail_gunlock2:

	if (io_gl)

		clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);

	gfs2_glock_dq_uninit(ghs + 1);

fail_free_inode:

	if (ip->i_gl)

		gfs2_glock_put(ip->i_gl);
@@ -800,6 +800,8 @@ fail_gunlock: 
			&GFS2_I(inode)->i_flags);

		iput(inode);

	}

	if (gfs2_holder_initialized(ghs + 1))

		gfs2_glock_dq_uninit(ghs + 1);

fail:

	return error;

}

fs/gfs2/super.c

+12 −6
Original line number Diff line number Diff line
@@ -1538,6 +1538,12 @@ static void gfs2_evict_inode(struct inode *inode) 
	if (inode->i_nlink || (sb->s_flags & MS_RDONLY))

		goto out;



	if (test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) {

		BUG_ON(!gfs2_glock_is_locked_by_me(ip->i_gl));

		gfs2_holder_mark_uninitialized(&gh);

		goto alloc_failed;

	}



	/* Must not read inode block until block type has been verified */

	error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh);

	if (unlikely(error)) {
@@ -1546,11 +1552,9 @@ static void gfs2_evict_inode(struct inode *inode) 
		goto out;

	}



	if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) {

	error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED);

	if (error)

		goto out_truncate;

	}



	if (test_bit(GIF_INVALID, &ip->i_flags)) {

		error = gfs2_inode_refresh(ip);
@@ -1558,6 +1562,7 @@ static void gfs2_evict_inode(struct inode *inode) 
			goto out_truncate;

	}



alloc_failed:

	if (gfs2_holder_initialized(&ip->i_iopen_gh) &&

	    test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) {

		ip->i_iopen_gh.gh_flags |= GL_NOCACHE;
@@ -1624,6 +1629,7 @@ out_unlock: 
		}

		gfs2_holder_uninit(&ip->i_iopen_gh);

	}

	if (gfs2_holder_initialized(&gh))

		gfs2_glock_dq_uninit(&gh);

	if (error && error != GLR_TRYFAILED && error != -EROFS)

		fs_warn(sdp, "gfs2_evict_inode: %d\n", error);

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