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four smb client fixes, including two important netfs integration fixes

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Merge tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - two important netfs integration fixes - including for a data
   corruption and also fixes for multiple xfstests

 - reenable swap support over SMB3

* tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix missing set of remote_i_size
  cifs: Fix smb3_insert_range() to move the zero_point
  cifs: update internal version number
  smb3: reenable swapfiles over SMB3 mounts
This commit is contained in:
Linus Torvalds 2024-05-25 22:33:10 -07:00
commit c13320499b
6 changed files with 34 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/netfs/direct_write.c
View File

@ -27,7 +27,7 @@ static void netfs_cleanup_dio_write(struct netfs_io_request *wreq)
* Perform an unbuffered write where we may have to do an RMW operation on an
* encrypted file. This can also be used for direct I/O writes.
*/
static ssize_t netfs_unbuffered_write_iter_locked(struct kiocb *iocb, struct iov_iter *iter,
ssize_t netfs_unbuffered_write_iter_locked(struct kiocb *iocb, struct iov_iter *iter,
struct netfs_group *netfs_group)
{
struct netfs_io_request *wreq;
@ -117,6 +117,7 @@ static ssize_t netfs_unbuffered_write_iter_locked(struct kiocb *iocb, struct iov
netfs_put_request(wreq, false, netfs_rreq_trace_put_return);
return ret;
}
EXPORT_SYMBOL(netfs_unbuffered_write_iter_locked);
/**
* netfs_unbuffered_write_iter - Unbuffered write to a file

6
fs/smb/client/cifsfs.c
View File

@ -1226,7 +1226,7 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
struct cifsFileInfo *smb_file_src = src_file->private_data;
struct cifsFileInfo *smb_file_target = dst_file->private_data;
struct cifs_tcon *target_tcon, *src_tcon;
unsigned long long destend, fstart, fend, new_size;
unsigned long long destend, fstart, fend, old_size, new_size;
unsigned int xid;
int rc;
@ -1293,6 +1293,7 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
goto unlock;
if (fend > target_cifsi->netfs.zero_point)
target_cifsi->netfs.zero_point = fend + 1;
old_size = target_cifsi->netfs.remote_i_size;
/* Discard all the folios that overlap the destination region. */
cifs_dbg(FYI, "about to discard pages %llx-%llx\n", fstart, fend);
@ -1305,9 +1306,8 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
if (target_tcon->ses->server->ops->duplicate_extents) {
rc = target_tcon->ses->server->ops->duplicate_extents(xid,
smb_file_src, smb_file_target, off, len, destoff);
if (rc == 0 && new_size > i_size_read(target_inode)) {
if (rc == 0 && new_size > old_size) {
truncate_setsize(target_inode, new_size);
netfs_resize_file(&target_cifsi->netfs, new_size, true);
fscache_resize_cookie(cifs_inode_cookie(target_inode),
new_size);
}

4
fs/smb/client/cifsfs.h
View File

@ -147,6 +147,6 @@ extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
/* when changing internal version - update following two lines at same time */
#define SMB3_PRODUCT_BUILD 48
#define CIFS_VERSION "2.48"
#define SMB3_PRODUCT_BUILD 49
#define CIFS_VERSION "2.49"
#endif /* _CIFSFS_H */

23
fs/smb/client/file.c
View File

@ -3189,6 +3189,28 @@ static void cifs_swap_deactivate(struct file *file)
/* do we need to unpin (or unlock) the file */
}
/**
* cifs_swap_rw - SMB3 address space operation for swap I/O
* @iocb: target I/O control block
* @iter: I/O buffer
*
* Perform IO to the swap-file. This is much like direct IO.
*/
static int cifs_swap_rw(struct kiocb *iocb, struct iov_iter *iter)
{
ssize_t ret;
WARN_ON_ONCE(iov_iter_count(iter) != PAGE_SIZE);
if (iov_iter_rw(iter) == READ)
ret = netfs_unbuffered_read_iter_locked(iocb, iter);
else
ret = netfs_unbuffered_write_iter_locked(iocb, iter, NULL);
if (ret < 0)
return ret;
return 0;
}
const struct address_space_operations cifs_addr_ops = {
.read_folio = netfs_read_folio,
.readahead = netfs_readahead,
@ -3204,6 +3226,7 @@ const struct address_space_operations cifs_addr_ops = {
*/
.swap_activate = cifs_swap_activate,
.swap_deactivate = cifs_swap_deactivate,
.swap_rw = cifs_swap_rw,
};
/*

2
fs/smb/client/smb2ops.c
View File

@ -2028,6 +2028,7 @@ smb2_duplicate_extents(const unsigned int xid,
* size will be queried on next revalidate, but it is important
* to make sure that file's cached size is updated immediately
*/
netfs_resize_file(netfs_inode(inode), dest_off + len, true);
cifs_setsize(inode, dest_off + len);
}
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
@ -3636,6 +3637,7 @@ static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
if (rc < 0)
goto out_2;
cifsi->netfs.zero_point = new_eof;
rc = smb3_zero_data(file, tcon, off, len, xid);
if (rc < 0)

2
include/linux/netfs.h
View File

@ -400,6 +400,8 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter,
ssize_t netfs_buffered_write_iter_locked(struct kiocb *iocb, struct iov_iter *from,
struct netfs_group *netfs_group);
ssize_t netfs_unbuffered_write_iter(struct kiocb *iocb, struct iov_iter *from);
ssize_t netfs_unbuffered_write_iter_locked(struct kiocb *iocb, struct iov_iter *iter,
struct netfs_group *netfs_group);
ssize_t netfs_file_write_iter(struct kiocb *iocb, struct iov_iter *from);
/* Address operations API */