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[Dazuko-devel] patch 1 for dazukofs release 3.0.0

From: Lino Sanfilippo
Subject: [Dazuko-devel] patch 1 for dazukofs release 3.0.0
Date: Tue, 21 Apr 2009 17:39:44 +0200
User-agent: IceDove (X11/20090105)

Hi all,

this is the first patch of a series of patches that fixes some bugs, that I encountered while testing dazukofs on various platforms. Please apply the patches consecutively.
I will do a short description for each bug:

Bug description:
On 32 Bit systems large file support may not be enabled. This prevents processes from opening
files larger than 4 GB.
This may cause a failure of the dentry_open() function which is used by dazukofs to get a
file descriptor for an accessed file.
This failure results in the file accessing process hanging infinitely while the dazukofs kernel code tries to get an open file descriptor again and again, always failing due to the file size limits. The solution is to open the file explicitly with large file support enabled by setting the

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diff -rup dazukofs-3.0.0/event.c dazukofs-3.0.0-p1/event.c
--- dazukofs-3.0.0/event.c      2009-02-22 17:44:03.000000000 +0100
+++ dazukofs-3.0.0-p1/event.c   2009-03-15 18:25:44.000000000 +0100
@@ -928,7 +928,8 @@ static int open_file(struct dazukofs_eve
        /* add myself to be ignored on file open (to avoid recursion) */
-       ec->file = dentry_open(dget(evt->dentry), mntget(evt->mnt), O_RDONLY);
+       ec->file = dentry_open(dget(evt->dentry), mntget(evt->mnt), 
+                              O_RDONLY | O_LARGEFILE);
        if (IS_ERR(ec->file)) {
                check_recursion();  /* remove myself from proc_list */
                ret = PTR_ERR(ec->file);

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