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| author | Weston Andros Adamson <dros@primarydata.com> | 2016-04-01 11:42:28 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-05-09 09:05:40 -0400 |
| commit | 1b1bc66bb4ebd737fb750b0e1afc753098f4a1b2 (patch) | |
| tree | 4c2c2175fadbc45eb3c02ba89e55bec893768686 /fs/nfs | |
| parent | 44549e8f5eea4e0a41b487b63e616cb089922b99 (diff) | |
| download | linux-1b1bc66bb4ebd737fb750b0e1afc753098f4a1b2.tar.gz linux-1b1bc66bb4ebd737fb750b0e1afc753098f4a1b2.tar.bz2 linux-1b1bc66bb4ebd737fb750b0e1afc753098f4a1b2.zip | |
pnfs: set NFS_IOHDR_REDO in pnfs_read_resend_pnfs
Like other resend paths, mark the (old) hdr as NFS_IOHDR_REDO. This
ensures the hdr completion function will not count the (old) hdr
as good bytes.
Also, vector the error back through the hdr->task.tk_status like other
retry calls.
This fixes a bug with the FlexFiles layout where libaio was reporting more
bytes read than requested.
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/pnfs.c | 14 | ||||
| -rw-r--r-- | fs/nfs/pnfs.h | 2 |
2 files changed, 9 insertions, 7 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 89a5ef4df08a..5b404d926e08 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -2143,12 +2143,15 @@ pnfs_try_to_read_data(struct nfs_pgio_header *hdr, } /* Resend all requests through pnfs. */ -int pnfs_read_resend_pnfs(struct nfs_pgio_header *hdr) +void pnfs_read_resend_pnfs(struct nfs_pgio_header *hdr) { struct nfs_pageio_descriptor pgio; - nfs_pageio_init_read(&pgio, hdr->inode, false, hdr->completion_ops); - return nfs_pageio_resend(&pgio, hdr); + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { + nfs_pageio_init_read(&pgio, hdr->inode, false, + hdr->completion_ops); + hdr->task.tk_status = nfs_pageio_resend(&pgio, hdr); + } } EXPORT_SYMBOL_GPL(pnfs_read_resend_pnfs); @@ -2158,12 +2161,11 @@ pnfs_do_read(struct nfs_pageio_descriptor *desc, struct nfs_pgio_header *hdr) const struct rpc_call_ops *call_ops = desc->pg_rpc_callops; struct pnfs_layout_segment *lseg = desc->pg_lseg; enum pnfs_try_status trypnfs; - int err = 0; trypnfs = pnfs_try_to_read_data(hdr, call_ops, lseg); if (trypnfs == PNFS_TRY_AGAIN) - err = pnfs_read_resend_pnfs(hdr); - if (trypnfs == PNFS_NOT_ATTEMPTED || err) + pnfs_read_resend_pnfs(hdr); + if (trypnfs == PNFS_NOT_ATTEMPTED || hdr->task.tk_status) pnfs_read_through_mds(desc, hdr); } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 1ac1db5f6dad..7222d3a35439 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -282,7 +282,7 @@ int _pnfs_return_layout(struct inode *); int pnfs_commit_and_return_layout(struct inode *); void pnfs_ld_write_done(struct nfs_pgio_header *); void pnfs_ld_read_done(struct nfs_pgio_header *); -int pnfs_read_resend_pnfs(struct nfs_pgio_header *); +void pnfs_read_resend_pnfs(struct nfs_pgio_header *); struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, struct nfs_open_context *ctx, loff_t pos, |