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authorEvgeniy Dushistov <dushistov@mail.ru>2006-07-01 04:36:24 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-01 09:56:03 -0700
commit10e5dce07e6f8f9cea1b54161a888bb099484f88 (patch)
tree9c7949cf82763344d86ae302748f8e1d278b565a /fs/ufs/util.h
parenteb28931e4a2c89e53d2b0c1a02a843240bff0806 (diff)
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[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 <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ufs/util.h')
-rw-r--r--fs/ufs/util.h8
1 files changed, 8 insertions, 0 deletions
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);
+}
/*