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| author |   Trond Myklebust <trond.myklebust@primarydata.com> | 2015-12-28 11:48:14 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-12-28 14:33:04 -0500 |
| commit | 0654cc726fc6eed6dca915fb65ba7975716ea080 (patch) | |
| tree | 367e0058259d17d89ffec6d02ea333aa4bb5485f /fs/nfs/pnfs.h | |
| parent | pNFS: Ensure nfs4_layoutget_prepare returns the correct error (diff) | |
| download | linux-dev-0654cc726fc6eed6dca915fb65ba7975716ea080.tar.xz linux-dev-0654cc726fc6eed6dca915fb65ba7975716ea080.zip | |
NFSv4.1/pNFS: Add a helper to mark the layout as returned
This ensures that we don't reuse the stateid if a layout return or
implied layout return means that we've returned all layout segments
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.h')
| -rw-r--r-- | fs/nfs/pnfs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index d1990e90e7a0..be24a759b655 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -556,6 +556,19 @@ pnfs_calc_offset_length(u64 offset, u64 end) return 1 + end - offset; } +/** + * pnfs_mark_layout_returned_if_empty - marks the layout as returned + * @lo: layout header + * + * Note: Caller must hold inode->i_lock + */ +static inline void +pnfs_mark_layout_returned_if_empty(struct pnfs_layout_hdr *lo) +{ + if (list_empty(&lo->plh_segs)) + set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); +} + extern unsigned int layoutstats_timer; #ifdef NFS_DEBUG |