diff options
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 73 |
1 files changed, 33 insertions, 40 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 92fdf9c35de2..4bcd4e838b47 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -42,7 +42,7 @@ #include "cifs_debug.h" #include "cifs_fs_sb.h" #include "fscache.h" - +#include "smbdirect.h" static inline int cifs_convert_flags(unsigned int flags) { @@ -1963,8 +1963,6 @@ wdata_alloc_and_fillpages(pgoff_t tofind, struct address_space *mapping, pgoff_t end, pgoff_t *index, unsigned int *found_pages) { - unsigned int nr_pages; - struct page **pages; struct cifs_writedata *wdata; wdata = cifs_writedata_alloc((unsigned int)tofind, @@ -1972,23 +1970,8 @@ wdata_alloc_and_fillpages(pgoff_t tofind, struct address_space *mapping, if (!wdata) return NULL; - /* - * find_get_pages_tag seems to return a max of 256 on each - * iteration, so we must call it several times in order to - * fill the array or the wsize is effectively limited to - * 256 * PAGE_SIZE. - */ - *found_pages = 0; - pages = wdata->pages; - do { - nr_pages = find_get_pages_tag(mapping, index, - PAGECACHE_TAG_DIRTY, tofind, - pages); - *found_pages += nr_pages; - tofind -= nr_pages; - pages += nr_pages; - } while (nr_pages && tofind && *index <= end); - + *found_pages = find_get_pages_range_tag(mapping, index, end, + PAGECACHE_TAG_DIRTY, tofind, wdata->pages); return wdata; } @@ -2004,11 +1987,10 @@ wdata_prepare_pages(struct cifs_writedata *wdata, unsigned int found_pages, for (i = 0; i < found_pages; i++) { page = wdata->pages[i]; /* - * At this point we hold neither mapping->tree_lock nor - * lock on the page itself: the page may be truncated or - * invalidated (changing page->mapping to NULL), or even - * swizzled back from swapper_space to tmpfs file - * mapping + * At this point we hold neither the i_pages lock nor the + * page lock: the page may be truncated or invalidated + * (changing page->mapping to NULL), or even swizzled + * back from swapper_space to tmpfs file mapping */ if (nr_pages == 0) @@ -2919,7 +2901,12 @@ cifs_readdata_release(struct kref *refcount) { struct cifs_readdata *rdata = container_of(refcount, struct cifs_readdata, refcount); - +#ifdef CONFIG_CIFS_SMB_DIRECT + if (rdata->mr) { + smbd_deregister_mr(rdata->mr); + rdata->mr = NULL; + } +#endif if (rdata->cfile) cifsFileInfo_put(rdata->cfile); @@ -3048,6 +3035,10 @@ uncached_fill_pages(struct TCP_Server_Info *server, } if (iter) result = copy_page_from_iter(page, 0, n, iter); +#ifdef CONFIG_CIFS_SMB_DIRECT + else if (rdata->mr) + result = n; +#endif else result = cifs_read_page_from_socket(server, page, n); if (result < 0) @@ -3488,20 +3479,18 @@ static const struct vm_operations_struct cifs_file_vm_ops = { int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma) { - int rc, xid; + int xid, rc = 0; struct inode *inode = file_inode(file); xid = get_xid(); - if (!CIFS_CACHE_READ(CIFS_I(inode))) { + if (!CIFS_CACHE_READ(CIFS_I(inode))) rc = cifs_zap_mapping(inode); - if (rc) - return rc; - } - - rc = generic_file_mmap(file, vma); - if (rc == 0) + if (!rc) + rc = generic_file_mmap(file, vma); + if (!rc) vma->vm_ops = &cifs_file_vm_ops; + free_xid(xid); return rc; } @@ -3511,16 +3500,16 @@ int cifs_file_mmap(struct file *file, struct vm_area_struct *vma) int rc, xid; xid = get_xid(); + rc = cifs_revalidate_file(file); - if (rc) { + if (rc) cifs_dbg(FYI, "Validation prior to mmap failed, error=%d\n", rc); - free_xid(xid); - return rc; - } - rc = generic_file_mmap(file, vma); - if (rc == 0) + if (!rc) + rc = generic_file_mmap(file, vma); + if (!rc) vma->vm_ops = &cifs_file_vm_ops; + free_xid(xid); return rc; } @@ -3617,6 +3606,10 @@ readpages_fill_pages(struct TCP_Server_Info *server, if (iter) result = copy_page_from_iter(page, 0, n, iter); +#ifdef CONFIG_CIFS_SMB_DIRECT + else if (rdata->mr) + result = n; +#endif else result = cifs_read_page_from_socket(server, page, n); if (result < 0) |