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[CIFS] Avoid extra large buffer allocation (and memcpy) in cifs_readpages

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Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2005-12-12 20:53:18 -08:00
parent c89a86bb96
commit ec637e3ffb
11 changed files with 156 additions and 108 deletions
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5
fs/cifs/inode.c
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@@ -229,11 +229,12 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (rc==0) {
int buf_type = CIFS_NO_BUFFER;
/* Read header */
rc = CIFSSMBRead(xid, pTcon,
netfid,
24 /* length */, 0 /* offset */,
&bytes_read, &pbuf);
&bytes_read, &pbuf, &buf_type);
if((rc == 0) && (bytes_read >= 8)) {
if(memcmp("IntxBLK", pbuf, 8) == 0) {
cFYI(1,("Block device"));
@@ -267,7 +268,7 @@ static int decode_sfu_inode(struct inode * inode, __u64 size,
} else {
inode->i_mode |= S_IFREG; /* then it is a file */
rc = -EOPNOTSUPP; /* or some unknown SFU type */
}
}
CIFSSMBClose(xid, pTcon, netfid);
}
return rc;