From 7c0bbf2d3dcd13c906244e0c2e4a0ba3a33dab6a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 26 Jul 2021 07:59:20 -0400 Subject: NFSv4/pNFS: Remove dead code Since commit 2b28a7bee453 ("fs, nfs: convert pnfs_layout_hdr.plh_refcount from atomic_t to refcount_t") it has not been legal to bump a zero refcount, so the code that tries to allow it if the NFS_LSEG_VALID flag is still set would cause trouble. Luckily, NFS_LSEG_VALID has its own refcount so we can never hit this bad code snippet in practice. Remove it to avoid confusion. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/pnfs.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'fs/nfs/pnfs.c') diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index da5cacad6979..856706180d33 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -596,10 +596,6 @@ pnfs_put_lseg(struct pnfs_layout_segment *lseg) inode = lo->plh_inode; if (refcount_dec_and_lock(&lseg->pls_refcount, &inode->i_lock)) { - if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags)) { - spin_unlock(&inode->i_lock); - return; - } pnfs_get_layout_hdr(lo); pnfs_layout_remove_lseg(lo, lseg); if (pnfs_cache_lseg_for_layoutreturn(lo, lseg)) -- cgit v1.2.3-59-g8ed1b