diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/afs/internal.h | 6 | ||||
| -rw-r--r-- | fs/afs/write.c | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index edaccd07e18e..344c545f934c 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -863,7 +863,7 @@ struct afs_vnode_cache_aux { * splitting the field into two parts. However, we need to represent a range * 0...PAGE_SIZE inclusive, so we can't support 64K pages on a 32-bit system. */ -#if PAGE_SIZE > 32768 +#ifdef CONFIG_64BIT #define __AFS_PAGE_PRIV_MASK 0xffffffffUL #define __AFS_PAGE_PRIV_SHIFT 32 #else @@ -878,12 +878,12 @@ static inline size_t afs_page_dirty_from(unsigned long priv) static inline size_t afs_page_dirty_to(unsigned long priv) { - return (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK; + return ((priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK) + 1; } static inline unsigned long afs_page_dirty(size_t from, size_t to) { - return ((unsigned long)to << __AFS_PAGE_PRIV_SHIFT) | from; + return ((unsigned long)(to - 1) << __AFS_PAGE_PRIV_SHIFT) | from; } #include <trace/events/afs.h> diff --git a/fs/afs/write.c b/fs/afs/write.c index ea1768b3c0b5..1a49f5c89342 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -93,7 +93,7 @@ int afs_write_begin(struct file *file, struct address_space *mapping, /* We want to store information about how much of a page is altered in * page->private. */ - BUILD_BUG_ON(PAGE_SIZE > 32768 && sizeof(page->private) < 8); + BUILD_BUG_ON(PAGE_SIZE - 1 > __AFS_PAGE_PRIV_MASK && sizeof(page->private) < 8); page = grab_cache_page_write_begin(mapping, index, flags); if (!page) |