reiserfs: don't preallocate blocks for extended attributes

Most extended attributes will fit in a single block.  More importantly,
we drop the reference to the inode while holding the transaction open
so the preallocated blocks aren't released.  As a result, the inode
may be evicted before it's removed from the transaction's prealloc list
which can cause memory corruption.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index dc198bc64c61..a6f39fe2b664 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -1128,7 +1128,7 @@ static int determine_prealloc_size(reiserfs_blocknr_hint_t * hint)
         hint->prealloc_size = 0;
 
         if (!hint->formatted_node && hint->preallocate) {
-                if (S_ISREG(hint->inode->i_mode)
+                if (S_ISREG(hint->inode->i_mode) && !IS_PRIVATE(hint->inode)
                     && hint->inode->i_size >=
                     REISERFS_SB(hint->th->t_super)->s_alloc_options.
                     preallocmin * hint->inode->i_sb->s_blocksize)