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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-12-05 17:33:07 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-12-05 22:52:01 -0500 |
| commit | 362fb578a573adeb67aa4790d901d851b8f8c8f3 (patch) | |
| tree | 2e25b7ea922b4f8ae2c88978d1fd37c877bc3415 | |
| parent | d94cbf6c73324a008dfb8576f15d089d7f707f24 (diff) | |
| download | linux-362fb578a573adeb67aa4790d901d851b8f8c8f3.tar.gz linux-362fb578a573adeb67aa4790d901d851b8f8c8f3.tar.bz2 linux-362fb578a573adeb67aa4790d901d851b8f8c8f3.zip | |
pNFS: Release NFS_LAYOUT_RETURN when invalidating the layout stateid
Ensure we release the NFS_LAYOUT_RETURN lock when we invalidate the
layout stateid, so that processes and RPC tasks that are waiting on
the layout return can continue.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/pnfs.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 2a3431314c23..896df7bdf85f 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -327,6 +327,15 @@ pnfs_clear_layoutreturn_info(struct pnfs_layout_hdr *lo) clear_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags); } +static void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo) +{ + clear_bit_unlock(NFS_LAYOUT_RETURN, &lo->plh_flags); + clear_bit(NFS_LAYOUT_RETURN_LOCK, &lo->plh_flags); + smp_mb__after_atomic(); + wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN); + rpc_wake_up(&NFS_SERVER(lo->plh_inode)->roc_rpcwaitq); +} + static void pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg, struct list_head *free_me) @@ -362,6 +371,9 @@ pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo, list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list) pnfs_clear_lseg_state(lseg, lseg_list); pnfs_free_returned_lsegs(lo, lseg_list, &range, 0); + if (test_bit(NFS_LAYOUT_RETURN, &lo->plh_flags) && + !test_and_set_bit(NFS_LAYOUT_RETURN_LOCK, &lo->plh_flags)) + pnfs_clear_layoutreturn_waitbit(lo); return !list_empty(&lo->plh_segs); } @@ -984,15 +996,6 @@ static void pnfs_clear_layoutcommit(struct inode *inode, } } -static void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo) -{ - clear_bit_unlock(NFS_LAYOUT_RETURN, &lo->plh_flags); - clear_bit(NFS_LAYOUT_RETURN_LOCK, &lo->plh_flags); - smp_mb__after_atomic(); - wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN); - rpc_wake_up(&NFS_SERVER(lo->plh_inode)->roc_rpcwaitq); -} - void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo, const nfs4_stateid *arg_stateid, const struct pnfs_layout_range *range, |