Commit c2e0fe3f authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: make rmdir() use compounding 



This and previous patches drop the number of roundtrips we need for rmdir()
from 6 to 2.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent ba8ca116

fs/cifs/smb2inode.c

+35 −13
Original line number Diff line number Diff line
@@ -41,7 +41,7 @@ static int 
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,

		 struct cifs_sb_info *cifs_sb, const char *full_path,

		 __u32 desired_access, __u32 create_disposition,

		 __u32 create_options, void *data, int command)

		 __u32 create_options, void *ptr, int command)

{

	int rc;

	__le16 *utf16_path = NULL;
@@ -56,9 +56,13 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, 
	struct kvec rsp_iov[3];

	struct kvec open_iov[SMB2_CREATE_IOV_SIZE];

	struct kvec qi_iov[1];

	struct kvec si_iov[2];  /* 1 + potential padding. */

	struct kvec close_iov[1];

	struct smb2_query_info_rsp *rsp = NULL;

	struct smb2_query_info_rsp *qi_rsp = NULL;

	int flags = 0;

	__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};

	unsigned int size[1];

	void *data[1];



	if (smb3_encryption_required(tcon))

		flags |= CIFS_TRANSFORM_REQ;
@@ -113,6 +117,21 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, 
		 * SMB2_open() call.

		 */

		break;

	case SMB2_OP_RMDIR:

		memset(&si_iov, 0, sizeof(si_iov));

		rqst[num_rqst].rq_iov = si_iov;

		rqst[num_rqst].rq_nvec = 1;



		size[0] = 8;

		data[0] = &delete_pending[0];



		rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,

					COMPOUND_FID, current->tgid,

					FILE_DISPOSITION_INFORMATION,

					SMB2_O_INFO_FILE, 0, data, size);

		smb2_set_next_command(server, &rqst[num_rqst]);

		smb2_set_related(&rqst[num_rqst++]);

		break;

	default:

		cifs_dbg(VFS, "Invalid command\n");

		rc = -EINVAL;
@@ -138,12 +157,13 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, 
	switch (command) {

	case SMB2_OP_QUERY_INFO:

		if (rc == 0) {

			rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;

			qi_rsp = (struct smb2_query_info_rsp *)

				rsp_iov[1].iov_base;

			rc = smb2_validate_and_copy_iov(

				le16_to_cpu(rsp->OutputBufferOffset),

				le32_to_cpu(rsp->OutputBufferLength),

				le16_to_cpu(qi_rsp->OutputBufferOffset),

				le32_to_cpu(qi_rsp->OutputBufferLength),

				&rsp_iov[1], sizeof(struct smb2_file_all_info),

				data);

				ptr);

		}

		if (rqst[1].rq_iov)

			SMB2_query_info_free(&rqst[1]);
@@ -155,6 +175,12 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, 
		if (rqst[1].rq_iov)

			SMB2_close_free(&rqst[1]);

		break;

	case SMB2_OP_RMDIR:

		if (rqst[1].rq_iov)

			SMB2_set_info_free(&rqst[1]);

		if (rqst[2].rq_iov)

			SMB2_close_free(&rqst[2]);

		break;

	}

	free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);

	free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
@@ -205,10 +231,6 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, 
	}



	switch (command) {

	case SMB2_OP_RMDIR:

		tmprc = SMB2_rmdir(xid, tcon, fid.persistent_fid,

				   fid.volatile_fid);

		break;

	case SMB2_OP_RENAME:

		tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,

				    fid.volatile_fid, (__le16 *)data);
@@ -322,7 +344,7 @@ int 
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,

	   struct cifs_sb_info *cifs_sb)

{

	return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,

	return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,

				CREATE_NOT_FILE,

				NULL, SMB2_OP_RMDIR);

}

fs/cifs/smb2pdu.c

+0 −16
Original line number Diff line number Diff line
@@ -3891,22 +3891,6 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, 
	return rc;

}



int

SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,

		  u64 persistent_fid, u64 volatile_fid)

{

	__u8 delete_pending = 1;

	void *data;

	unsigned int size;



	data = &delete_pending;

	size = 1; /* sizeof __u8 */



	return send_set_info(xid, tcon, persistent_fid, volatile_fid,

		current->tgid, FILE_DISPOSITION_INFORMATION, SMB2_O_INFO_FILE,

		0, 1, &data, &size);

}



int

SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,

		  u64 persistent_fid, u64 volatile_fid, __le16 *target_file)

fs/cifs/smb2proto.h

+0 −2
Original line number Diff line number Diff line
@@ -185,8 +185,6 @@ extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, 
extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,

		       u64 persistent_fid, u64 volatile_fid,

		       __le16 *target_file);

extern int SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,

		      u64 persistent_fid, u64 volatile_fid);

extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,

			     u64 persistent_fid, u64 volatile_fid,

			     __le16 *target_file);

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