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nfsd: Push mnt_want_write() outside of i_mutex

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When mnt_want_write() starts to handle freezing it will get a full lock
semantics requiring proper lock ordering. So push mnt_want_write() call
consistently outside of i_mutex.

CC: linux-nfs@vger.kernel.org
CC: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Jan Kara 2012-06-12 16:20:33 +02:00 • committed by Al Viro
parent e7848683ae
commit 4a55c1017b
6 changed files with 64 additions and 46 deletions
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1
include/linux/nfsd/nfsfh.h
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@ -143,6 +143,7 @@ typedef struct svc_fh {
int fh_maxsize; /* max size for fh_handle */
unsigned char fh_locked; /* inode locked by us */
unsigned char fh_want_write; /* remount protection taken */
#ifdef CONFIG_NFSD_V3
unsigned char fh_post_saved; /* post-op attrs saved */