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CIFS: Allow wsize to exceed CIFSMaxBufSize

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This allows cifs_writepages to send data in larger chunks from the page
cache, without requiring larger memory allocations in other cases.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
2005-10-05 15:14:33 -07:00
parent 37c0eb4677
commit 4a77118cd5
3 changed files with 10 additions and 16 deletions
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8
fs/cifs/file.c
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@ -925,6 +925,7 @@ static struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *cifs_inode)
/* if it fails, try another handle - might be */
/* dangerous to hold up writepages with retry */
if(rc) {
cFYI(1,("failed on reopen file in wp"));
read_lock(&GlobalSMBSeslock);
continue;
}
@ -1028,6 +1029,13 @@ static int cifs_writepages(struct address_space *mapping,
if (cifs_sb->wsize < PAGE_CACHE_SIZE)
return generic_writepages(mapping, wbc);
/* BB FIXME we do not have code to sign across multiple buffers yet,
so go to older writepage style write which we can sign if needed */
if((cifs_sb->tcon->ses) && (cifs_sb->tcon->ses->server))
if(cifs_sb->tcon->ses->server->secMode &
(SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
return generic_writepages(mapping, wbc);
/*
* BB: Is this meaningful for a non-block-device file system?
* If it is, we should test it again after we do I/O