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[PATCH] hfs: don't dirty unchanged inode

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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>
This commit is contained in:
Roman Zippel
2005-08-01 21:11:40 -07:00
committed by Linus Torvalds
parent 0072b1389c
commit f76d28d235
2 changed files with 5 additions and 2 deletions
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3
fs/hfs/extent.c
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@@ -482,7 +482,8 @@ void hfs_file_truncate(struct inode *inode)
page_cache_release(page); page_cache_release(page);
mark_inode_dirty(inode); mark_inode_dirty(inode);
return; return;
} } else if (inode->i_size == HFS_I(inode)->phys_size)
return;
size = inode->i_size + HFS_SB(sb)->alloc_blksz - 1; size = inode->i_size + HFS_SB(sb)->alloc_blksz - 1;
blk_cnt = size / HFS_SB(sb)->alloc_blksz; blk_cnt = size / HFS_SB(sb)->alloc_blksz;
alloc_cnt = HFS_I(inode)->alloc_blocks; alloc_cnt = HFS_I(inode)->alloc_blocks;

4
fs/hfsplus/extents.c
View File

@@ -461,7 +461,9 @@ void hfsplus_file_truncate(struct inode *inode)
page_cache_release(page); page_cache_release(page);
mark_inode_dirty(inode); mark_inode_dirty(inode);
return; 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; blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
alloc_cnt = HFSPLUS_I(inode).alloc_blocks; alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
if (blk_cnt == alloc_cnt) if (blk_cnt == alloc_cnt)