From 10e5dce07e6f8f9cea1b54161a888bb099484f88 Mon Sep 17 00:00:00 2001 From: Evgeniy Dushistov Date: Sat, 1 Jul 2006 04:36:24 -0700 Subject: [PATCH] ufs: truncate should allocate block for last byte This patch fixes buggy behaviour of UFS in such kind of scenario: open(, O_TRUNC...) ftruncate(, 1024) ftruncate(, 0) Such a scenario causes ufs_panic and remount read-only. This happen because of according to specification UFS should always allocate block for last byte, and many parts of our implementation rely on this, but `ufs_truncate' doesn't care about this. To make possible return error code and to know about old size, this patch removes `truncate' from ufs inode_operations and uses `setattr' method to call ufs_truncate. Signed-off-by: Evgeniy Dushistov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ufs/util.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'fs/ufs/util.h') diff --git a/fs/ufs/util.h b/fs/ufs/util.h index 406981fff5e..28fce6c239b 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -251,6 +251,14 @@ extern void _ubh_ubhcpymem_(struct ufs_sb_private_info *, unsigned char *, struc #define ubh_memcpyubh(ubh,mem,size) _ubh_memcpyubh_(uspi,ubh,mem,size) extern void _ubh_memcpyubh_(struct ufs_sb_private_info *, struct ufs_buffer_head *, unsigned char *, unsigned); +/* This functions works with cache pages*/ +extern struct page *ufs_get_locked_page(struct address_space *mapping, + pgoff_t index); +static inline void ufs_put_locked_page(struct page *page) +{ + unlock_page(page); + page_cache_release(page); +} /* -- cgit v1.2.3-70-g09d2