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Commit 9a63edd1 authored by Steven Whitehouse's avatar Steven Whitehouse
Browse files

GFS2: Clean up gfs2_create 



If we pass through knowledge of whether the creation is intended to be
exclusive or not, then we can deal with that in gfs2_create_inode
and remove one set of locking. Also this removes the loop in
gfs2_create and simplifies the code a bit.

Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent ab9bbda0

fs/gfs2/inode.c

+14 −22
Original line number Original line Diff line number Diff line
@@ -663,7 +663,7 @@ static int gfs2_security_init(struct gfs2_inode *dip, struct gfs2_inode *ip, 




static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,

static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,

			     unsigned int mode, dev_t dev, const char *symname,

			     unsigned int mode, dev_t dev, const char *symname,

			     unsigned int size)

			     unsigned int size, int excl)

{

{

	const struct qstr *name = &dentry->d_name;

	const struct qstr *name = &dentry->d_name;

	struct gfs2_holder ghs[2];

	struct gfs2_holder ghs[2];
@@ -683,6 +683,12 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 
		goto fail;

		goto fail;





	error = create_ok(dip, name, mode);

	error = create_ok(dip, name, mode);

	if ((error == -EEXIST) && S_ISREG(mode) && !excl) {

		inode = gfs2_lookupi(dir, &dentry->d_name, 0);

		gfs2_glock_dq_uninit(ghs);

		d_instantiate(dentry, inode);

		return IS_ERR(inode) ? PTR_ERR(inode) : 0;

	}

	if (error)

	if (error)

		goto fail_gunlock;

		goto fail_gunlock;
@@ -760,24 +766,10 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, 
static int gfs2_create(struct inode *dir, struct dentry *dentry,

static int gfs2_create(struct inode *dir, struct dentry *dentry,

		       int mode, struct nameidata *nd)

		       int mode, struct nameidata *nd)

{

{

	struct inode *inode;

	int excl = 0;

	int ret;

	if (nd && (nd->flags & LOOKUP_EXCL))



		excl = 1;

	for (;;) {

	return gfs2_create_inode(dir, dentry, S_IFREG | mode, 0, NULL, 0, excl);

		ret = gfs2_create_inode(dir, dentry, S_IFREG | mode, 0, NULL, 0);

		if (ret != -EEXIST || (nd && (nd->flags & LOOKUP_EXCL)))

			return ret;



		inode = gfs2_lookupi(dir, &dentry->d_name, 0);

		if (inode) {

			if (!IS_ERR(inode))

				break;

			return PTR_ERR(inode);

		}

	}



	d_instantiate(dentry, inode);

	return 0;

}

}





/**

/**
@@ -1135,7 +1127,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 
	if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)

	if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode) - 1)

		return -ENAMETOOLONG;

		return -ENAMETOOLONG;





	return gfs2_create_inode(dir, dentry, S_IFLNK | S_IRWXUGO, 0, symname, size);

	return gfs2_create_inode(dir, dentry, S_IFLNK | S_IRWXUGO, 0, symname, size, 0);

}

}





/**

/**
@@ -1149,7 +1141,7 @@ static int gfs2_symlink(struct inode *dir, struct dentry *dentry, 




static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)

static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode)

{

{

	return gfs2_create_inode(dir, dentry, S_IFDIR | mode, 0, NULL, 0);

	return gfs2_create_inode(dir, dentry, S_IFDIR | mode, 0, NULL, 0, 0);

}

}





/**

/**
@@ -1164,7 +1156,7 @@ static int gfs2_mkdir(struct inode *dir, struct dentry *dentry, int mode) 
static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,

static int gfs2_mknod(struct inode *dir, struct dentry *dentry, int mode,

		      dev_t dev)

		      dev_t dev)

{

{

	return gfs2_create_inode(dir, dentry, mode, dev, NULL, 0);

	return gfs2_create_inode(dir, dentry, mode, dev, NULL, 0, 0);

}

}





/*

/*