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Diffstat (limited to 'fs/nfs/pnfs.c')
-rw-r--r--fs/nfs/pnfs.c62
1 files changed, 22 insertions, 40 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 6095a8d..113c3b3 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -618,7 +618,6 @@ pnfs_destroy_layout(struct nfs_inode *nfsi)
pnfs_get_layout_hdr(lo);
pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RO_FAILED);
pnfs_layout_clear_fail_bit(lo, NFS_LAYOUT_RW_FAILED);
- pnfs_clear_retry_layoutget(lo);
spin_unlock(&nfsi->vfs_inode.i_lock);
pnfs_free_lseg_list(&tmp_list);
pnfs_put_layout_hdr(lo);
@@ -904,17 +903,9 @@ send_layoutget(struct pnfs_layout_hdr *lo,
lseg = nfs4_proc_layoutget(lgp, gfp_flags);
} while (lseg == ERR_PTR(-EAGAIN));
- if (IS_ERR(lseg)) {
- switch (PTR_ERR(lseg)) {
- case -ENOMEM:
- case -ERESTARTSYS:
- break;
- default:
- /* remember that LAYOUTGET failed and suspend trying */
- pnfs_layout_io_set_failed(lo, range->iomode);
- }
- return NULL;
- } else
+ if (IS_ERR(lseg) && !nfs_error_is_fatal(PTR_ERR(lseg)))
+ lseg = NULL;
+ else
pnfs_layout_clear_fail_bit(lo,
pnfs_iomode_to_fail_bit(range->iomode));
@@ -1102,7 +1093,6 @@ bool pnfs_roc(struct inode *ino)
&lo->plh_flags))
layoutreturn = pnfs_prepare_layoutreturn(lo);
- pnfs_clear_retry_layoutget(lo);
list_for_each_entry_safe(lseg, tmp, &lo->plh_segs, pls_list)
/* If we are sending layoutreturn, invalidate all valid lsegs */
if (layoutreturn || test_bit(NFS_LSEG_ROC, &lseg->pls_flags)) {
@@ -1465,25 +1455,15 @@ static bool pnfs_within_mdsthreshold(struct nfs_open_context *ctx,
return ret;
}
-/* stop waiting if someone clears NFS_LAYOUT_RETRY_LAYOUTGET bit. */
-static int pnfs_layoutget_retry_bit_wait(struct wait_bit_key *key, int mode)
-{
- if (!test_bit(NFS_LAYOUT_RETRY_LAYOUTGET, key->flags))
- return 1;
- return nfs_wait_bit_killable(key, mode);
-}
-
static bool pnfs_prepare_to_retry_layoutget(struct pnfs_layout_hdr *lo)
{
- if (!pnfs_should_retry_layoutget(lo))
- return false;
/*
* send layoutcommit as it can hold up layoutreturn due to lseg
* reference
*/
pnfs_layoutcommit_inode(lo->plh_inode, false);
return !wait_on_bit_action(&lo->plh_flags, NFS_LAYOUT_RETURN,
- pnfs_layoutget_retry_bit_wait,
+ nfs_wait_bit_killable,
TASK_UNINTERRUPTIBLE);
}
@@ -1558,8 +1538,7 @@ lookup_again:
}
/* if LAYOUTGET already failed once we don't try again */
- if (pnfs_layout_io_test_failed(lo, iomode) &&
- !pnfs_should_retry_layoutget(lo)) {
+ if (pnfs_layout_io_test_failed(lo, iomode)) {
trace_pnfs_update_layout(ino, pos, count, iomode, lo,
PNFS_UPDATE_LAYOUT_IO_TEST_FAIL);
goto out_unlock;
@@ -1636,7 +1615,6 @@ lookup_again:
arg.length = PAGE_CACHE_ALIGN(arg.length);
lseg = send_layoutget(lo, ctx, &arg, gfp_flags);
- pnfs_clear_retry_layoutget(lo);
atomic_dec(&lo->plh_outstanding);
trace_pnfs_update_layout(ino, pos, count, iomode, lo,
PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);
@@ -1649,7 +1627,7 @@ out:
"(%s, offset: %llu, length: %llu)\n",
__func__, ino->i_sb->s_id,
(unsigned long long)NFS_FILEID(ino),
- lseg == NULL ? "not found" : "found",
+ IS_ERR_OR_NULL(lseg) ? "not found" : "found",
iomode==IOMODE_RW ? "read/write" : "read-only",
(unsigned long long)pos,
(unsigned long long)count);
@@ -1785,7 +1763,6 @@ void pnfs_error_mark_layout_for_return(struct inode *inode,
struct pnfs_layout_segment *lseg)
{
struct pnfs_layout_hdr *lo = NFS_I(inode)->layout;
- int iomode = pnfs_iomode_to_fail_bit(lseg->pls_range.iomode);
struct pnfs_layout_range range = {
.iomode = lseg->pls_range.iomode,
.offset = 0,
@@ -1794,8 +1771,6 @@ void pnfs_error_mark_layout_for_return(struct inode *inode,
LIST_HEAD(free_me);
spin_lock(&inode->i_lock);
- /* set failure bit so that pnfs path will be retried later */
- pnfs_layout_set_fail_bit(lo, iomode);
if (lo->plh_return_iomode == 0)
lo->plh_return_iomode = range.iomode;
else if (lo->plh_return_iomode != range.iomode)
@@ -1828,6 +1803,11 @@ pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *r
rd_size,
IOMODE_READ,
GFP_KERNEL);
+ if (IS_ERR(pgio->pg_lseg)) {
+ pgio->pg_error = PTR_ERR(pgio->pg_lseg);
+ pgio->pg_lseg = NULL;
+ return;
+ }
}
/* If no lseg, fall back to read through mds */
if (pgio->pg_lseg == NULL)
@@ -1840,13 +1820,19 @@ void
pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req, u64 wb_size)
{
- if (pgio->pg_lseg == NULL)
+ if (pgio->pg_lseg == NULL) {
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
req->wb_context,
req_offset(req),
wb_size,
IOMODE_RW,
GFP_NOFS);
+ if (IS_ERR(pgio->pg_lseg)) {
+ pgio->pg_error = PTR_ERR(pgio->pg_lseg);
+ pgio->pg_lseg = NULL;
+ return;
+ }
+ }
/* If no lseg, fall back to write through mds */
if (pgio->pg_lseg == NULL)
nfs_pageio_reset_write_mds(pgio);
@@ -2014,15 +2000,13 @@ static void pnfs_writehdr_free(struct nfs_pgio_header *hdr)
int
pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
{
- struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
-
struct nfs_pgio_header *hdr;
int ret;
hdr = nfs_pgio_header_alloc(desc->pg_rw_ops);
if (!hdr) {
- desc->pg_completion_ops->error_cleanup(&mirror->pg_list);
- return -ENOMEM;
+ desc->pg_error = -ENOMEM;
+ return desc->pg_error;
}
nfs_pgheader_init(desc, hdr, pnfs_writehdr_free);
@@ -2145,15 +2129,13 @@ static void pnfs_readhdr_free(struct nfs_pgio_header *hdr)
int
pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
{
- struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc);
-
struct nfs_pgio_header *hdr;
int ret;
hdr = nfs_pgio_header_alloc(desc->pg_rw_ops);
if (!hdr) {
- desc->pg_completion_ops->error_cleanup(&mirror->pg_list);
- return -ENOMEM;
+ desc->pg_error = -ENOMEM;
+ return desc->pg_error;
}
nfs_pgheader_init(desc, hdr, pnfs_readhdr_free);
hdr->lseg = pnfs_get_lseg(desc->pg_lseg);
generated by cgit v0.10.2 at 2024-11-15 04:31:56 (GMT)