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NFSv4.1/pnfs: Remove redundant check in pnfs_layoutgets_blocked() 

layoutget now should already be serialised w.r.t. layout returns

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
hifive-unleashed-5.1
Trond Myklebust 2015-08-04 16:40:08 -04:00
parent 2d8ae84fbc
commit e1c06f80dc
1 changed files with 5 additions and 21 deletions
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26
fs/nfs/pnfs.c
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@ -816,23 +816,12 @@ pnfs_layout_stateid_blocked(const struct pnfs_layout_hdr *lo,
return !pnfs_seqid_is_newer(seqid, lo->plh_barrier);
}
static bool
pnfs_layout_returning(const struct pnfs_layout_hdr *lo,
struct pnfs_layout_range *range)
{
return test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) &&
(lo->plh_return_iomode == IOMODE_ANY ||
lo->plh_return_iomode == range->iomode);
}
/* lget is set to 1 if called from inside send_layoutget call chain */
static bool
pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo,
struct pnfs_layout_range *range)
pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo)
{
return lo->plh_block_lgets ||
test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
pnfs_layout_returning(lo, range);
test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
}
int
@ -844,7 +833,7 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo,
dprintk("--> %s\n", __func__);
spin_lock(&lo->plh_inode->i_lock);
if (pnfs_layoutgets_blocked(lo, range)) {
if (pnfs_layoutgets_blocked(lo)) {
status = -EAGAIN;
} else if (!nfs4_valid_open_stateid(open_state)) {
status = -EBADF;
@ -1546,7 +1535,7 @@ lookup_again:
goto out_put_layout_hdr;
}
if (pnfs_layoutgets_blocked(lo, &arg))
if (pnfs_layoutgets_blocked(lo))
goto out_unlock;
atomic_inc(&lo->plh_outstanding);
spin_unlock(&ino->i_lock);
@ -1618,12 +1607,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
lseg->pls_range = res->range;
spin_lock(&ino->i_lock);
if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
dprintk("%s forget reply due to recall\n", __func__);
goto out_forget_reply;
}
if (pnfs_layoutgets_blocked(lo, &lgp->args.range)) {
if (pnfs_layoutgets_blocked(lo)) {
dprintk("%s forget reply due to state\n", __func__);
goto out_forget_reply;
}