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Revert "nfs: take extra reference to fl->fl_file when running a LOCKU operation"

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This reverts commit db2efec0ca.

William reported that he was seeing instability with this patch, which
is likely due to the fact that it can cause the kernel to take a new
reference to a filp after the last reference has already been put.

Revert this patch for now, as we'll need to fix this in another way.

Cc: stable@vger.kernel.org
Reported-by: William Dauchy <william@gandi.net>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Reviewed-by: "J. Bruce Fields" <bfields@fieldses.org>
Tested-by: "J. Bruce Fields" <bfields@fieldses.org>
This commit is contained in:
Jeff Layton 2015-07-11 06:43:01 -04:00
parent b9243b5a5d
commit ed05676427
1 changed files with 0 additions and 2 deletions
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2
fs/nfs/nfs4proc.c
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@ -5484,7 +5484,6 @@ static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
atomic_inc(&lsp->ls_count);
/* Ensure we don't close file until we're done freeing locks! */
p->ctx = get_nfs_open_context(ctx);
get_file(fl->fl_file);
memcpy(&p->fl, fl, sizeof(p->fl));
p->server = NFS_SERVER(inode);
return p;
@ -5496,7 +5495,6 @@ static void nfs4_locku_release_calldata(void *data)
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_lock_state(calldata->lsp);
put_nfs_open_context(calldata->ctx);
fput(calldata->fl.fl_file);
kfree(calldata);
}