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authorPavel Shilovsky <pshilovsky@samba.org>2012-09-19 01:20:29 +0200
committerSteve French <smfrench@gmail.com>2012-09-25 04:46:28 +0200
commitf9c6e234c3ca64b8d49336908df99948518d6261 (patch)
treec49a8042f3039d8c007018a51bfa0264341a8c32 /fs/cifs/file.c
parentCIFS: Add SMB2 support for cifs_iovec_write (diff)
downloadlinux-f9c6e234c3ca64b8d49336908df99948518d6261.tar.xz
linux-f9c6e234c3ca64b8d49336908df99948518d6261.zip
CIFS: Move readpage code to ops struct
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/file.c')
-rw-r--r--fs/cifs/file.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 703c1648b068..fae03c52f314 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2782,8 +2782,8 @@ ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
return cifs_user_readv(iocb, iov, nr_segs, pos);
}
-static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
- loff_t *poffset)
+static ssize_t
+cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
{
int rc = -EACCES;
unsigned int bytes_read = 0;
@@ -2792,8 +2792,9 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
unsigned int rsize;
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
+ struct TCP_Server_Info *server;
unsigned int xid;
- char *current_offset;
+ char *cur_offset;
struct cifsFileInfo *open_file;
struct cifs_io_parms io_parms;
int buf_type = CIFS_NO_BUFFER;
@@ -2812,6 +2813,12 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
}
open_file = file->private_data;
tcon = tlink_tcon(open_file->tlink);
+ server = tcon->ses->server;
+
+ if (!server->ops->sync_read) {
+ free_xid(xid);
+ return -ENOSYS;
+ }
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
@@ -2821,9 +2828,8 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
if ((file->f_flags & O_ACCMODE) == O_WRONLY)
cFYI(1, "attempting read on write only file instance");
- for (total_read = 0, current_offset = read_data;
- read_size > total_read;
- total_read += bytes_read, current_offset += bytes_read) {
+ for (total_read = 0, cur_offset = read_data; read_size > total_read;
+ total_read += bytes_read, cur_offset += bytes_read) {
current_read_size = min_t(uint, read_size - total_read, rsize);
/*
* For windows me and 9x we do not want to request more than it
@@ -2841,13 +2847,13 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
if (rc != 0)
break;
}
- io_parms.netfid = open_file->fid.netfid;
io_parms.pid = pid;
io_parms.tcon = tcon;
- io_parms.offset = *poffset;
+ io_parms.offset = *offset;
io_parms.length = current_read_size;
- rc = CIFSSMBRead(xid, &io_parms, &bytes_read,
- &current_offset, &buf_type);
+ rc = server->ops->sync_read(xid, open_file, &io_parms,
+ &bytes_read, &cur_offset,
+ &buf_type);
}
if (rc || (bytes_read == 0)) {
if (total_read) {
@@ -2858,7 +2864,7 @@ static ssize_t cifs_read(struct file *file, char *read_data, size_t read_size,
}
} else {
cifs_stats_bytes_read(tcon, total_read);
- *poffset += bytes_read;
+ *offset += bytes_read;
}
}
free_xid(xid);