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authorRoman Zippel <zippel@linux-m68k.org>2005-08-01 21:11:40 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-01 21:38:00 -0700
commitf76d28d235cf777dd2e1c1d48c16ee10c1d1587f (patch)
treee0f47d7b83276d91298326eb818e3de7fa32a2f2
parent0072b1389c25355ccc01048114adb9652c13fd9f (diff)
downloadconfigs-f76d28d235cf777dd2e1c1d48c16ee10c1d1587f.tar.gz
[PATCH] hfs: don't dirty unchanged inode
If inode size hasn't changed, don't do anything further in truncate, which also prevents a dirty inode, what might upset some readonly devices quite badly. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/hfs/extent.c3
-rw-r--r--fs/hfsplus/extents.c4
2 files changed, 5 insertions, 2 deletions
diff --git a/fs/hfs/extent.c b/fs/hfs/extent.c
index cbc8510ad22..5ea6b3d45ea 100644
--- a/fs/hfs/extent.c
+++ b/fs/hfs/extent.c
@@ -482,7 +482,8 @@ void hfs_file_truncate(struct inode *inode)
page_cache_release(page);
mark_inode_dirty(inode);
return;
- }
+ } else if (inode->i_size == HFS_I(inode)->phys_size)
+ return;
size = inode->i_size + HFS_SB(sb)->alloc_blksz - 1;
blk_cnt = size / HFS_SB(sb)->alloc_blksz;
alloc_cnt = HFS_I(inode)->alloc_blocks;
diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c
index 376498cc64f..e7235ca79a9 100644
--- a/fs/hfsplus/extents.c
+++ b/fs/hfsplus/extents.c
@@ -461,7 +461,9 @@ void hfsplus_file_truncate(struct inode *inode)
page_cache_release(page);
mark_inode_dirty(inode);
return;
- }
+ } else if (inode->i_size == HFSPLUS_I(inode).phys_size)
+ return;
+
blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
if (blk_cnt == alloc_cnt)