From: Nikita Danilov <NikitaDanilov@Yahoo.COM>
To: Linus Torvalds <Torvalds@Transmeta.COM>
Cc: Reiserfs developers mail-list <Reiserfs-Dev@Namesys.COM>,
linux-kernel@vger.kernel.org
Subject: [PATCH]: reiserfs: D-clear-i_blocks.patch
Date: Thu, 2 Aug 2001 19:45:58 +0400 [thread overview]
Message-ID: <15209.30134.699801.417492@beta.namesys.com> (raw)
Hello, Linus,
This patch sets inode.i_blocks to zero on deletion of reiserfs
file. This in particular cures hard to believe bug when saving file in
EMACS caused top to loose sight of all processes:
. reiserfs didn't properly cleared i_blocks when removing
symlinks. Actually -7 was inserted into unsigned i_blocks field. This
didn't usually hurt because file is being deleted;
. inode is reused for procfs and neither get_new_inode() nor
proc_read_inode() cleared i_blocks;
. now procfs inode has huge i_blocks field;
. top calls stat on it and libc wrapper returns EOVERFLOW, as i_blocks
doesn't fit into user-level struct.
. top sees nothing.
[lkml: please CC me, I am not subscribed.]
Nikita.
diff -rup linux-2.4.8-pre3/fs/reiserfs/inode.c linux-2.4.8-pre3.patched/fs/reiserfs/inode.c
--- linux-2.4.8-pre3/fs/reiserfs/inode.c Wed Aug 1 17:21:10 2001
+++ linux-2.4.8-pre3.patched/fs/reiserfs/inode.c Wed Aug 1 21:33:37 2001
@@ -55,6 +55,7 @@ void reiserfs_delete_inode (struct inode
;
}
clear_inode (inode); /* note this must go after the journal_end to prevent deadlock */
+ inode->i_blocks = 0;
unlock_kernel() ;
}
next reply other threads:[~2001-08-02 15:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-02 15:45 Nikita Danilov [this message]
2001-08-02 17:26 ` [PATCH]: reiserfs: D-clear-i_blocks.patch Andreas Dilger
2001-08-02 17:45 ` Alexander Viro
2001-08-02 19:21 ` [reiserfs-dev] " Hans Reiser
2001-08-02 18:31 ` Nikita Danilov
2001-08-03 12:53 ` jlnance
2001-08-03 16:16 ` Nikita Danilov
2001-08-30 14:27 Nikita Danilov
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