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NFS client bugfixes for Linux 3.7

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- Do not call pnfs_return_layout() from an rpciod context
 - nfs4_ds_disconnect can cause Oopses. Kill it...
 - Fix the return value for nfs_callback_start_svc
 - Fix a number of compile warnings
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Merge tag 'nfs-for-3.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 - Do not call pnfs_return_layout() from an rpciod context
 - nfs4_ds_disconnect can cause Oopses.  Kill it...
 - Fix the return value for nfs_callback_start_svc
 - Fix a number of compile warnings

* tag 'nfs-for-3.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Fix the return value for nfs_callback_start_svc
  NFSv4.1: Declare osd_pri_2_pnfs_err(), objio_init_read/write to be static
  NFSv4: fs/nfs/nfs4getroot.c needs to include "internal.h"
  NFSv4.1: Use kcalloc() to allocate zeroed arrays instead of kzalloc()
  NFSv4.1: Do not call pnfs_return_layout() from an rpciod context
  NFSv4.1: Kill nfs4_ds_disconnect()
This commit is contained in:
Linus Torvalds 2012-10-23 08:47:38 +03:00
parent c52f1dd529 e9b7e91745
commit 344ba37bdc
7 changed files with 22 additions and 32 deletions
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2
fs/nfs/callback.c
View file

@ -241,7 +241,7 @@ static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt,
svc_exit_thread(cb_info->rqst);
cb_info->rqst = NULL;
cb_info->task = NULL;
return PTR_ERR(cb_info->task);
return ret;
}
dprintk("nfs_callback_up: service started\n");
return 0;

21
fs/nfs/nfs4filelayout.c
View file

@ -122,12 +122,21 @@ static void filelayout_reset_read(struct nfs_read_data *data)
}
}
static void filelayout_fenceme(struct inode *inode, struct pnfs_layout_hdr *lo)
{
if (!test_and_clear_bit(NFS_LAYOUT_RETURN, &lo->plh_flags))
return;
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags);
pnfs_return_layout(inode);
}
static int filelayout_async_handle_error(struct rpc_task *task,
struct nfs4_state *state,
struct nfs_client *clp,
struct pnfs_layout_segment *lseg)
{
struct inode *inode = lseg->pls_layout->plh_inode;
struct pnfs_layout_hdr *lo = lseg->pls_layout;
struct inode *inode = lo->plh_inode;
struct nfs_server *mds_server = NFS_SERVER(inode);
struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg);
struct nfs_client *mds_client = mds_server->nfs_client;
@ -204,10 +213,8 @@ static int filelayout_async_handle_error(struct rpc_task *task,
dprintk("%s DS connection error %d\n", __func__,
task->tk_status);
nfs4_mark_deviceid_unavailable(devid);
clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags);
_pnfs_return_layout(inode);
set_bit(NFS_LAYOUT_RETURN, &lo->plh_flags);
rpc_wake_up(&tbl->slot_tbl_waitq);
nfs4_ds_disconnect(clp);
/* fall through */
default:
reset:
@ -331,7 +338,9 @@ static void filelayout_read_count_stats(struct rpc_task *task, void *data)
static void filelayout_read_release(void *data)
{
struct nfs_read_data *rdata = data;
struct pnfs_layout_hdr *lo = rdata->header->lseg->pls_layout;
filelayout_fenceme(lo->plh_inode, lo);
nfs_put_client(rdata->ds_clp);
rdata->header->mds_ops->rpc_release(data);
}
@ -429,7 +438,9 @@ static void filelayout_write_count_stats(struct rpc_task *task, void *data)
static void filelayout_write_release(void *data)
{
struct nfs_write_data *wdata = data;
struct pnfs_layout_hdr *lo = wdata->header->lseg->pls_layout;
filelayout_fenceme(lo->plh_inode, lo);
nfs_put_client(wdata->ds_clp);
wdata->header->mds_ops->rpc_release(data);
}
@ -739,7 +750,7 @@ filelayout_decode_layout(struct pnfs_layout_hdr *flo,
goto out_err;
if (fl->num_fh > 0) {
fl->fh_array = kzalloc(fl->num_fh * sizeof(struct nfs_fh *),
fl->fh_array = kcalloc(fl->num_fh, sizeof(fl->fh_array[0]),
gfp_flags);
if (!fl->fh_array)
goto out_err;

1
fs/nfs/nfs4filelayout.h
View file

@ -149,6 +149,5 @@ extern void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
extern void nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr);
struct nfs4_file_layout_dsaddr *
filelayout_get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id, gfp_t gfp_flags);
void nfs4_ds_disconnect(struct nfs_client *clp);
#endif /* FS_NFS_NFS4FILELAYOUT_H */

22
fs/nfs/nfs4filelayoutdev.c
View file

@ -148,28 +148,6 @@ _data_server_lookup_locked(const struct list_head *dsaddrs)
return NULL;
}
/*
* Lookup DS by nfs_client pointer. Zero data server client pointer
*/
void nfs4_ds_disconnect(struct nfs_client *clp)
{
struct nfs4_pnfs_ds *ds;
struct nfs_client *found = NULL;
dprintk("%s clp %p\n", __func__, clp);
spin_lock(&nfs4_ds_cache_lock);
list_for_each_entry(ds, &nfs4_data_server_cache, ds_node)
if (ds->ds_clp && ds->ds_clp == clp) {
found = ds->ds_clp;
ds->ds_clp = NULL;
}
spin_unlock(&nfs4_ds_cache_lock);
if (found) {
set_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state);
nfs_put_client(clp);
}
}
/*
* Create an rpc connection to the nfs4_pnfs_ds data server
* Currently only supports IPv4 and IPv6 addresses

1
fs/nfs/nfs4getroot.c
View file

@ -5,6 +5,7 @@
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_CLIENT

6
fs/nfs/objlayout/objio_osd.c
View file

@ -369,7 +369,7 @@ void objio_free_result(struct objlayout_io_res *oir)
kfree(objios);
}
enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep)
static enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep)
{
switch (oep) {
case OSD_ERR_PRI_NO_ERROR:
@ -574,7 +574,7 @@ static bool objio_pg_test(struct nfs_pageio_descriptor *pgio,
(unsigned long)pgio->pg_layout_private;
}
void objio_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
static void objio_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
pnfs_generic_pg_init_read(pgio, req);
if (unlikely(pgio->pg_lseg == NULL))
@ -604,7 +604,7 @@ static bool aligned_on_raid_stripe(u64 offset, struct ore_layout *layout,
return false;
}
void objio_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
static void objio_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
{
unsigned long stripe_end = 0;
u64 wb_size;

1
fs/nfs/pnfs.h
View file

@ -62,6 +62,7 @@ enum {
NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
NFS_LAYOUT_ROC, /* some lseg had roc bit set */
NFS_LAYOUT_RETURN, /* Return this layout ASAP */
};
enum layoutdriver_policy_flags {