diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 25decebbc478c..ea628da503c68 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -113,6 +113,9 @@ extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma); extern const struct file_operations cifs_dir_ops; extern int cifs_dir_open(struct inode *inode, struct file *file); extern int cifs_readdir(struct file *file, struct dir_context *ctx); +extern void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len); +extern void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len); +extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len); /* Functions related to dir entries */ extern const struct dentry_operations cifs_dentry_ops; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index ddf6f572af81e..09240b8b018a3 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -36,6 +36,99 @@ #include "cifs_ioctl.h" #include "cached_dir.h" +/* + * Completion of write to server. + */ +void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + if (!len) + return; + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + WARN_ONCE(1, "bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + continue; + } + + folio_detach_private(folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + +/* + * Failure of write to server. + */ +void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + if (!len) + return; + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + WARN_ONCE(1, "bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + continue; + } + + folio_set_error(folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + +/* + * Redirty pages after a temporary failure. + */ +void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len) +{ + struct address_space *mapping = inode->i_mapping; + struct folio *folio; + pgoff_t end; + + XA_STATE(xas, &mapping->i_pages, start / PAGE_SIZE); + + if (!len) + return; + + rcu_read_lock(); + + end = (start + len - 1) / PAGE_SIZE; + xas_for_each(&xas, folio, end) { + if (!folio_test_writeback(folio)) { + WARN_ONCE(1, "bad %x @%llx page %lx %lx\n", + len, start, folio_index(folio), end); + continue; + } + + filemap_dirty_folio(folio->mapping, folio); + folio_end_writeback(folio); + } + + rcu_read_unlock(); +} + /* * Mark as invalid, all open files on tree connections since they * were closed when session to server was lost.