diff options
| author | Ronnie Sahlberg | 2018-09-03 13:33:46 +1000 |
|---|---|---|
| committer | Steve French | 2018-10-23 21:16:04 -0500 |
| commit | f7bfe04bf0dbc422cbb3d5cffe1601518116dad6 (patch) | |
| tree | 16f238fdd5bfebbf98ca6615d28594ef5567de4a | |
| parent | c2e0fe3f5aae1f70a1ab402778819d2cacbaefa6 (diff) | |
cifs: change SMB2_OP_SET_EOF to use compounding
This changes SMB2_OP_SET_EOF to use compounding in some situations.
This is part of the path based API to truncate a file.
Most of the time this will however not be invoked for SMB2 since
cifs_set_file_size() will as far as I can tell almost always just
open the file synchronously and switch to the handle based truncate
code path, thus bypassing the compounding we add here.
Rewriting cifs_set_file_size() and make that whole pile of code more
compounding friendly, and also easier to read and understand, is a
different project though and not for this patch.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
| -rw-r--r-- | fs/cifs/smb2inode.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index 25f057c587ea..e9794a2adaac 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -132,6 +132,21 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, smb2_set_next_command(server, &rqst[num_rqst]); smb2_set_related(&rqst[num_rqst++]); break; + case SMB2_OP_SET_EOF: + memset(&si_iov, 0, sizeof(si_iov)); + rqst[num_rqst].rq_iov = si_iov; + rqst[num_rqst].rq_nvec = 1; + + size[0] = 8; /* sizeof __le64 */ + data[0] = ptr; + + rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID, + COMPOUND_FID, current->tgid, + FILE_END_OF_FILE_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; @@ -175,6 +190,7 @@ 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_SET_EOF: case SMB2_OP_RMDIR: if (rqst[1].rq_iov) SMB2_set_info_free(&rqst[1]); @@ -239,11 +255,6 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon, tmprc = SMB2_set_hardlink(xid, tcon, fid.persistent_fid, fid.volatile_fid, (__le16 *)data); break; - case SMB2_OP_SET_EOF: - tmprc = SMB2_set_eof(xid, tcon, fid.persistent_fid, - fid.volatile_fid, current->tgid, - (__le64 *)data, false); - break; case SMB2_OP_SET_INFO: tmprc = SMB2_set_basic_info(xid, tcon, fid.persistent_fid, fid.volatile_fid, @@ -403,9 +414,10 @@ smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, bool set_alloc) { __le64 eof = cpu_to_le64(size); - return smb2_open_op_close(xid, tcon, cifs_sb, full_path, - FILE_WRITE_DATA, FILE_OPEN, 0, &eof, - SMB2_OP_SET_EOF); + + return smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_WRITE_DATA, FILE_OPEN, 0, &eof, + SMB2_OP_SET_EOF); } int |