Commit a2a52a8a authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: get rid of cifs_sb->mountdata 



as we now have a full smb3_fs_context as part of the cifs superblock
we no longer need a local copy of the mount options and can just
reference the copy in the smb3_fs_context.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: default avatarShyam Prasad N <sprasad@microsoft.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent d17abdf7

fs/cifs/cifs_dfs_ref.c

+2 −1
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include "cifs_debug.h"

#include "cifs_unicode.h"

#include "dfs_cache.h"

#include "fs_context.h"



static LIST_HEAD(cifs_dfs_automount_list);
@@ -275,7 +276,7 @@ static struct vfsmount *cifs_dfs_do_mount(struct dentry *mntpt, 
	/* See afs_mntpt_do_automount in fs/afs/mntpt.c for an example */



	/* strip first '\' from fullpath */

	mountdata = cifs_compose_mount_options(cifs_sb->mountdata,

	mountdata = cifs_compose_mount_options(cifs_sb->ctx->mount_options,

					       fullpath + 1, NULL);

	if (IS_ERR(mountdata)) {

		kfree(devname);

fs/cifs/cifs_fs_sb.h

+0 −1
Original line number Diff line number Diff line
@@ -74,7 +74,6 @@ struct cifs_sb_info { 
	umode_t	mnt_file_mode;

	umode_t	mnt_dir_mode;

	unsigned int mnt_cifs_flags;

	char   *mountdata; /* options received at mount time or via DFS refs */

	struct delayed_work prune_tlinks;

	struct rcu_head rcu;

fs/cifs/cifsfs.c

+0 −7
Original line number Diff line number Diff line
@@ -812,12 +812,6 @@ cifs_smb3_do_mount(struct file_system_type *fs_type, 
		goto out;

	}



	cifs_sb->mountdata = kstrndup(cifs_sb->ctx->mount_options, PAGE_SIZE, GFP_KERNEL);

	if (cifs_sb->mountdata == NULL) {

		root = ERR_PTR(-ENOMEM);

		goto out;

	}



	rc = cifs_setup_cifs_sb(cifs_sb->ctx, cifs_sb);

	if (rc) {

		root = ERR_PTR(rc);
@@ -872,7 +866,6 @@ out_super: 
out:

	if (cifs_sb) {

		kfree(cifs_sb->prepath);

		kfree(cifs_sb->mountdata);

		cifs_cleanup_volume_info(cifs_sb->ctx);

		kfree(cifs_sb);

	}

fs/cifs/connect.c

+10 −9
Original line number Diff line number Diff line
@@ -3012,7 +3012,7 @@ build_unc_path_to_root(const struct smb3_fs_context *ctx, 
 * expand_dfs_referral - Perform a dfs referral query and update the cifs_sb

 *

 *

 * If a referral is found, cifs_sb->mountdata will be (re-)allocated

 * If a referral is found, cifs_sb->ctx->mount_options will be (re-)allocated

 * to a string containing updated options for the submount.  Otherwise it

 * will be left untouched.

 *
@@ -3038,7 +3038,7 @@ expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses, 
	rc = dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb),

			    ref_path, &referral, NULL);

	if (!rc) {

		mdata = cifs_compose_mount_options(cifs_sb->mountdata,

		mdata = cifs_compose_mount_options(cifs_sb->ctx->mount_options,

						   full_path + 1, &referral);

		free_dfs_info_param(&referral);
@@ -3049,8 +3049,8 @@ expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses, 
			cifs_cleanup_volume_info_contents(ctx);

			rc = cifs_setup_volume_info(ctx);

		}

		kfree(cifs_sb->mountdata);

		cifs_sb->mountdata = mdata;

		kfree(cifs_sb->ctx->mount_options);

		cifs_sb->ctx->mount_options = mdata;

	}

	kfree(full_path);

	return rc;
@@ -3109,7 +3109,8 @@ static int setup_dfs_tgt_conn(const char *path, const char *full_path, 
	if (rc)

		return rc;



	mdata = cifs_compose_mount_options(cifs_sb->mountdata, full_path + 1, &ref);

	mdata = cifs_compose_mount_options(cifs_sb->ctx->mount_options,

					   full_path + 1, &ref);

	free_dfs_info_param(&ref);



	if (IS_ERR(mdata)) {
@@ -3438,7 +3439,8 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx) 
			goto error;

	}

	/* Save mount options */

	mntdata = kstrndup(cifs_sb->mountdata, strlen(cifs_sb->mountdata), GFP_KERNEL);

	mntdata = kstrndup(cifs_sb->ctx->mount_options,

			   strlen(cifs_sb->ctx->mount_options), GFP_KERNEL);

	if (!mntdata) {

		rc = -ENOMEM;

		goto error;
@@ -3462,12 +3464,12 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx) 
			break;

		}

		/* Chase referral */

		oldmnt = cifs_sb->mountdata;

		oldmnt = cifs_sb->ctx->mount_options;

		rc = expand_dfs_referral(xid, root_ses, ctx, cifs_sb, ref_path + 1);

		if (rc)

			break;

		/* Connect to new DFS target only if we were redirected */

		if (oldmnt != cifs_sb->mountdata) {

		if (oldmnt != cifs_sb->ctx->mount_options) {

			mount_put_conns(cifs_sb, xid, server, ses, tcon);

			rc = mount_get_conns(ctx, cifs_sb, &xid, &server, &ses, &tcon);

		}
@@ -3774,7 +3776,6 @@ cifs_umount(struct cifs_sb_info *cifs_sb) 
	}

	spin_unlock(&cifs_sb->tlink_tree_lock);



	kfree(cifs_sb->mountdata);

	kfree(cifs_sb->prepath);

#ifdef CONFIG_CIFS_DFS_UPCALL

	dfs_cache_del_vol(cifs_sb->origin_fullpath);

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