2.6.39 Kernel Changes for FileSystem, get_sb removed
From: kashish bhatia <hidden>
Date: 2011-09-20 13:16:56
Hi Abhijit, On Tue, Sep 20, 2011 at 5:14 PM, Abhijit Pawar [off-list ref]wrote:
Hi list, It seems that the support for get_sb function is removed from kernel 2.6.39 onwards. My code which is working till 2.6.38 series is failing with new kernels.
The function "get_sb()" is still present in security/inode.c in kernel 2.6.39. Only the function pointer of get_sb() has been removed from struct file_system_type in /include/linux/fs.h. I tried finding out but there isnt anything mentioned. So if this function
itself is removed then how kernel is going to find out the superblock and use it? Are we supposed to use the mount function provided? This is what i got from one of the kernel patch email.
Yes , you are supposed to use mount function. visit the following link : http://lxr.linux.no/#linux+v2.6.39/security/inode.c#L144<http://lxr.linux.no/#linux+v2.6.39/security/inode.c%23L144> +[mandatory]
quoted hunk ↗ jump to hunk
+ ->get_sb() is gone. Switch to use of ->mount(). Typically it's just +a matter of switching from calling get_sb_... to mount_... and changing the +function type. If you were doing it manually, just switch from setting ->mnt_root +to some pointer to returning that pointer. On errors return ERR_PTR(...).diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txtIt looks like there are other changes related to Pages are also done. Regards, Abhijit Pawar _______________________________________________ Kernelnewbies mailing list Kernelnewbies at kernelnewbies.org http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
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