diff options
Diffstat (limited to 'fs/smb/client/file.c')
| -rw-r--r-- | fs/smb/client/file.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c index 9d38294a7e68..9d5c2440abfc 100644 --- a/fs/smb/client/file.c +++ b/fs/smb/client/file.c @@ -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, }; /* |