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| author | Sergei Antonov <saproj@gmail.com> | 2014-06-07 01:36:28 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-07 03:08:10 +0400 |
| commit | 2cd282a1bc6b9d111b8beee63bea0af735a8a1aa (patch) | |
| tree | 80dff1bb5f089868bdbee433b0308098b2c2e6b4 /fs/hfsplus/btree.c | |
| parent | 915ab236d3c491f9bb0f6596d03e25b37f4d5a20 (diff) | |
| download | linux-2cd282a1bc6b9d111b8beee63bea0af735a8a1aa.tar.xz | |
hfsplus: fix "unused node is not erased" error
Zero newly allocated extents in the catalog tree if volume attributes
tell us to. Not doing so we risk getting the "unused node is not
erased" error. See kHFSUnusedNodeFix flag in Apple's source code for
reference.
There was a previous commit clearing the node when it is freed: commit
899bed05e9f6 ("hfsplus: fix issue with unzeroed unused b-tree nodes").
But it did not handle newly allocated extents (this patch fixes it).
And it zeroed nodes in all trees unconditionally which is an overkill.
This patch adds a condition and also switches to 'tree->node_size' as a
simpler method of getting the length to zero.
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Cc: Anton Altaparmakov <aia21@cam.ac.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Cc: Kyle Laracey <kalaracey@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hfsplus/btree.c')
| -rw-r--r-- | fs/hfsplus/btree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 0fcec8b2a90b..3345c7553edc 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -358,7 +358,7 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) u32 count; int res; - res = hfsplus_file_extend(inode); + res = hfsplus_file_extend(inode, hfs_bnode_need_zeroout(tree)); if (res) return ERR_PTR(res); hip->phys_size = inode->i_size = |