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Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6 

Pull CIFS fixes from Steve French:
 "Two low risk, small fixes, that fix cifs regressions introduced in
  3.7."

* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix wrong buffer pointer usage in smb_set_file_info
  cifs: fix writeback race with file that is growing
This commit is contained in:
Linus Torvalds 2012-11-30 16:57:18 -08:00
parent a95251b8ba c772aa92b6
commit 086486e46e
2 changed files with 4 additions and 5 deletions
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6
fs/cifs/file.c
View File

@ -1794,7 +1794,6 @@ static int cifs_writepages(struct address_space *mapping,
struct TCP_Server_Info *server;
struct page *page;
int rc = 0;
loff_t isize = i_size_read(mapping->host);
/*
* If wsize is smaller than the page cache size, default to writing
@ -1899,7 +1898,7 @@ retry:
*/
set_page_writeback(page);
if (page_offset(page) >= isize) {
if (page_offset(page) >= i_size_read(mapping->host)) {
done = true;
unlock_page(page);
end_page_writeback(page);
@ -1932,7 +1931,8 @@ retry:
wdata->offset = page_offset(wdata->pages[0]);
wdata->pagesz = PAGE_CACHE_SIZE;
wdata->tailsz =
min(isize - page_offset(wdata->pages[nr_pages - 1]),
min(i_size_read(mapping->host) -
page_offset(wdata->pages[nr_pages - 1]),
(loff_t)PAGE_CACHE_SIZE);
wdata->bytes = ((nr_pages - 1) * PAGE_CACHE_SIZE) +
wdata->tailsz;

3
fs/cifs/smb1ops.c
View File

@ -766,7 +766,6 @@ smb_set_file_info(struct inode *inode, const char *full_path,
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct tcon_link *tlink = NULL;
struct cifs_tcon *tcon;
FILE_BASIC_INFO info_buf;
/* if the file is already open for write, just use that fileid */
open_file = find_writable_file(cinode, true);
@ -817,7 +816,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
netpid = current->tgid;
set_via_filehandle:
rc = CIFSSMBSetFileInfo(xid, tcon, &info_buf, netfid, netpid);
rc = CIFSSMBSetFileInfo(xid, tcon, buf, netfid, netpid);
if (!rc)
cinode->cifsAttrs = le32_to_cpu(buf->Attributes);