@@ -887,6 +887,7 @@ static struct pnfs_layoutdriver_type blocklayout_type = {
.name = "LAYOUT_BLOCK_VOLUME",
.owner = THIS_MODULE,
.flags = PNFS_LAYOUTRET_ON_SETATTR |
+ PNFS_LAYOUTRET_ON_ERROR |
PNFS_READ_WHOLE_PAGE,
.read_pagelist = bl_read_pagelist,
.write_pagelist = bl_write_pagelist,
@@ -910,6 +911,7 @@ static struct pnfs_layoutdriver_type scsilayout_type = {
.name = "LAYOUT_SCSI",
.owner = THIS_MODULE,
.flags = PNFS_LAYOUTRET_ON_SETATTR |
+ PNFS_LAYOUTRET_ON_ERROR |
PNFS_READ_WHOLE_PAGE,
.read_pagelist = bl_read_pagelist,
.write_pagelist = bl_write_pagelist,
@@ -524,8 +524,10 @@ static inline int pnfs_return_layout(struct inode *ino)
struct nfs_inode *nfsi = NFS_I(ino);
struct nfs_server *nfss = NFS_SERVER(ino);
- if (pnfs_enabled_sb(nfss) && nfsi->layout)
+ if (pnfs_enabled_sb(nfss) && nfsi->layout) {
+ set_bit(NFS_LAYOUT_RETURN_REQUESTED, &nfsi->layout->plh_flags);
return _pnfs_return_layout(ino);
+ }
return 0;
}
If there's an error doing I/O to block device, and the client resends the I/O to the MDS, the MDS must recall the layout from the client before processing the I/O. Let's preempt that exchange by returning the layout before falling back to the MDS when there's an error. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> --- fs/nfs/blocklayout/blocklayout.c | 2 ++ fs/nfs/pnfs.h | 4 +++- 2 files changed, 5 insertions(+), 1 deletion(-)