diff options
Diffstat (limited to 'fs/nfs/file.c')
| -rw-r--r-- | fs/nfs/file.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 325df0aeab05..24832d040eb8 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -477,7 +477,8 @@ static int nfs_release_page(struct page *page, gfp_t gfp) /* Always try to initiate a 'commit' if relevant, but only * wait for it if __GFP_WAIT is set and the calling process is - * allowed to block. Even then, only wait 1 second. + * allowed to block. Even then, only wait 1 second and only + * if the 'bdi' is not congested. * Waiting indefinitely can cause deadlocks when the NFS * server is on this machine, and there is no particular need * to wait extensively here. A short wait has the benefit @@ -488,9 +489,13 @@ static int nfs_release_page(struct page *page, gfp_t gfp) nfs_commit_inode(mapping->host, 0); if ((gfp & __GFP_WAIT) && !current_is_kswapd() && - !(current->flags & PF_FSTRANS)) { + !(current->flags & PF_FSTRANS) && + !bdi_write_congested(&nfss->backing_dev_info)) { wait_on_page_bit_killable_timeout(page, PG_private, HZ); + if (PagePrivate(page)) + set_bdi_congested(&nfss->backing_dev_info, + BLK_RW_ASYNC); } } /* If PagePrivate() is set, then the page is not freeable */ |