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authorTrond Myklebust <trond.myklebust@hammerspace.com>2020-08-04 23:30:30 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2020-08-12 16:46:05 +0300
commitff041727e9e029845857cac41aae118ead5e261b (patch)
tree71e0a1ff7e3f4799a5dd34bda2f1f7280b51cbe2 /fs/nfs
parent54898f70a8549492f2268f7cdd855fa1d8c5e0ca (diff)
downloadlinux-ff041727e9e029845857cac41aae118ead5e261b.tar.xz
NFS: Don't move layouts to plh_return_segs list while in use
If the layout segment is still in use for a read or a write, we should not move it to the layout plh_return_segs list. If we do, we can end up returning the layout while I/O is still in progress. Fixes: e0b7d420f72a ("pNFS: Don't discard layout segments that are marked for return") Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/pnfs.c12
1 files changed, 1 insertions, 11 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index d8cdb94c6668..262ce01c7abe 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2392,16 +2392,6 @@ out_forget:
return ERR_PTR(-EAGAIN);
}
-static int
-mark_lseg_invalid_or_return(struct pnfs_layout_segment *lseg,
- struct list_head *tmp_list)
-{
- if (!mark_lseg_invalid(lseg, tmp_list))
- return 0;
- pnfs_cache_lseg_for_layoutreturn(lseg->pls_layout, lseg);
- return 1;
-}
-
/**
* pnfs_mark_matching_lsegs_return - Free or return matching layout segments
* @lo: pointer to layout header
@@ -2438,7 +2428,7 @@ pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo,
lseg, lseg->pls_range.iomode,
lseg->pls_range.offset,
lseg->pls_range.length);
- if (mark_lseg_invalid_or_return(lseg, tmp_list))
+ if (mark_lseg_invalid(lseg, tmp_list))
continue;
remaining++;
set_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags);