diff options
| author | Trond Myklebust | 2017-07-19 13:50:07 -0400 |
|---|---|---|
| committer | Trond Myklebust | 2017-08-15 11:54:47 -0400 |
| commit | 902a4c00462a755fe4a6ca655813c8b2a51fab4c (patch) | |
| tree | 15d882e7eb8ba073643e6b793d1101a07ee8a7dd | |
| parent | 5b2b5187fa85665f0c47029ecaf49186ec138d9b (diff) | |
NFS: Remove nfs_page_group_clear_bits()
At this point, we only expect ever to potentially see PG_REMOVE and
PG_TEARDOWN being set on the subrequests.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/write.c | 29 |
1 files changed, 3 insertions, 26 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index ffb9934607ef..20d44ea328b6 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -347,22 +347,6 @@ static void nfs_end_page_writeback(struct nfs_page *req) clear_bdi_congested(inode_to_bdi(inode), BLK_RW_ASYNC); } - -/* nfs_page_group_clear_bits - * @req - an nfs request - * clears all page group related bits from @req - */ -static void -nfs_page_group_clear_bits(struct nfs_page *req) -{ - clear_bit(PG_TEARDOWN, &req->wb_flags); - clear_bit(PG_UNLOCKPAGE, &req->wb_flags); - clear_bit(PG_UPTODATE, &req->wb_flags); - clear_bit(PG_WB_END, &req->wb_flags); - clear_bit(PG_REMOVE, &req->wb_flags); -} - - /* * nfs_unroll_locks_and_wait - unlock all newly locked reqs and wait on @req * @@ -417,13 +401,12 @@ nfs_destroy_unlinked_subrequests(struct nfs_page *destroy_list, /* make sure old group is not used */ subreq->wb_this_page = subreq; + clear_bit(PG_REMOVE, &subreq->wb_flags); + /* Note: races with nfs_page_group_destroy() */ if (!kref_read(&subreq->wb_kref)) { - bool freeme = test_bit(PG_TEARDOWN, &subreq->wb_flags); - - nfs_page_group_clear_bits(subreq); /* Check if we raced with nfs_page_group_destroy() */ - if (freeme) + if (test_and_clear_bit(PG_TEARDOWN, &subreq->wb_flags)) nfs_free_request(subreq); continue; } @@ -437,7 +420,6 @@ nfs_destroy_unlinked_subrequests(struct nfs_page *destroy_list, spin_unlock(&inode->i_lock); } - nfs_page_group_clear_bits(subreq); /* subreq is now totally disconnected from page group or any * write / commit lists. last chance to wake any waiters */ nfs_unlock_and_release_request(subreq); @@ -573,11 +555,6 @@ try_again: spin_unlock(&inode->i_lock); } - /* - * prepare head request to be added to new pgio descriptor - */ - nfs_page_group_clear_bits(head); - nfs_page_group_unlock(head); nfs_destroy_unlinked_subrequests(destroy_list, head, inode); |