diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-09-20 17:31:43 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-09-28 16:03:14 -0400 |
| commit | 9c6263819f25254f2ed48f076b50096dd5893dfb (patch) | |
| tree | d95527cbeba0d44973f286602a35ff2c21c811bd /fs/nfs/pnfs.c | |
| parent | 6622c3ea059b2fed49924b74db41d1e0f065fbd3 (diff) | |
NFSv4.1: Clean up the removal of pnfs_layout_hdr from the server list
Move the code into pnfs_free_layout_hdr(), and add checks to
get_layout_by_fh_locked to ensure that they don't reference a layout
that is being freed.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 08663146f5f5..11cc0ad6b409 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -207,7 +207,16 @@ pnfs_alloc_layout_hdr(struct inode *ino, gfp_t gfp_flags) static void pnfs_free_layout_hdr(struct pnfs_layout_hdr *lo) { - struct pnfs_layoutdriver_type *ld = NFS_SERVER(lo->plh_inode)->pnfs_curr_ld; + struct nfs_server *server = NFS_SERVER(lo->plh_inode); + struct pnfs_layoutdriver_type *ld = server->pnfs_curr_ld; + + if (!list_empty(&lo->plh_layouts)) { + struct nfs_client *clp = server->nfs_client; + + spin_lock(&clp->cl_lock); + list_del_init(&lo->plh_layouts); + spin_unlock(&clp->cl_lock); + } put_rpccred(lo->plh_lc_cred); return ld->alloc_layout_hdr ? ld->free_layout_hdr(lo) : kfree(lo); } @@ -217,7 +226,6 @@ pnfs_detach_layout_hdr(struct pnfs_layout_hdr *lo) { struct nfs_inode *nfsi = NFS_I(lo->plh_inode); dprintk("%s: freeing layout cache %p\n", __func__, lo); - BUG_ON(!list_empty(&lo->plh_layouts)); nfsi->layout = NULL; /* Reset MDS Threshold I/O counters */ nfsi->write_io = 0; @@ -480,22 +488,10 @@ void pnfs_free_lseg_list(struct list_head *free_me) { struct pnfs_layout_segment *lseg, *tmp; - struct pnfs_layout_hdr *lo; if (list_empty(free_me)) return; - lo = list_first_entry(free_me, struct pnfs_layout_segment, - pls_list)->pls_layout; - - if (test_bit(NFS_LAYOUT_DESTROYED, &lo->plh_flags)) { - struct nfs_client *clp; - - clp = NFS_SERVER(lo->plh_inode)->nfs_client; - spin_lock(&clp->cl_lock); - list_del_init(&lo->plh_layouts); - spin_unlock(&clp->cl_lock); - } list_for_each_entry_safe(lseg, tmp, free_me, pls_list) { list_del(&lseg->pls_list); free_lseg(lseg); @@ -1148,11 +1144,6 @@ pnfs_update_layout(struct inode *ino, arg.length = PAGE_CACHE_ALIGN(arg.length); lseg = send_layoutget(lo, ctx, &arg, gfp_flags); - if (!lseg && first) { - spin_lock(&clp->cl_lock); - list_del_init(&lo->plh_layouts); - spin_unlock(&clp->cl_lock); - } atomic_dec(&lo->plh_outstanding); out_put_layout_hdr: pnfs_put_layout_hdr(lo); |