diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-06-01 18:23:01 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-06-22 09:59:42 -0400 |
| commit | 6b56a89833fa7903595c8d138bb4927187315cba (patch) | |
| tree | 77160ce6d2b08a121542d47f1d889011c595c464 /fs | |
| parent | ca0daa277acac1029f74d9fea838c9e507398226 (diff) | |
| download | op-kernel-dev-6b56a89833fa7903595c8d138bb4927187315cba.zip op-kernel-dev-6b56a89833fa7903595c8d138bb4927187315cba.tar.gz | |
NFS: Kill NFS_INO_NFS_INO_FLUSHING: it is a performance killer
filemap_datawrite() and friends already deal just fine with livelock.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/file.c | 8 | ||||
| -rw-r--r-- | fs/nfs/nfstrace.h | 1 | ||||
| -rw-r--r-- | fs/nfs/write.c | 11 |
3 files changed, 0 insertions, 20 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 2d39d9f..29d7477 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -360,14 +360,6 @@ static int nfs_write_begin(struct file *file, struct address_space *mapping, start: /* - * Prevent starvation issues if someone is doing a consistency - * sync-to-disk - */ - ret = wait_on_bit_action(&NFS_I(mapping->host)->flags, NFS_INO_FLUSHING, - nfs_wait_bit_killable, TASK_KILLABLE); - if (ret) - return ret; - /* * Wait for O_DIRECT to complete */ inode_dio_wait(mapping->host); diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index 0b9e5cc..fe80a1c 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -37,7 +37,6 @@ { 1 << NFS_INO_ADVISE_RDPLUS, "ADVISE_RDPLUS" }, \ { 1 << NFS_INO_STALE, "STALE" }, \ { 1 << NFS_INO_INVALIDATING, "INVALIDATING" }, \ - { 1 << NFS_INO_FLUSHING, "FLUSHING" }, \ { 1 << NFS_INO_FSCACHE, "FSCACHE" }, \ { 1 << NFS_INO_LAYOUTCOMMIT, "NEED_LAYOUTCOMMIT" }, \ { 1 << NFS_INO_LAYOUTCOMMITTING, "LAYOUTCOMMIT" }) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e1c74d3..980d44f 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -657,16 +657,9 @@ static int nfs_writepages_callback(struct page *page, struct writeback_control * int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) { struct inode *inode = mapping->host; - unsigned long *bitlock = &NFS_I(inode)->flags; struct nfs_pageio_descriptor pgio; int err; - /* Stop dirtying of new pages while we sync */ - err = wait_on_bit_lock_action(bitlock, NFS_INO_FLUSHING, - nfs_wait_bit_killable, TASK_KILLABLE); - if (err) - goto out_err; - nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES); nfs_pageio_init_write(&pgio, inode, wb_priority(wbc), false, @@ -674,10 +667,6 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) err = write_cache_pages(mapping, wbc, nfs_writepages_callback, &pgio); nfs_pageio_complete(&pgio); - clear_bit_unlock(NFS_INO_FLUSHING, bitlock); - smp_mb__after_atomic(); - wake_up_bit(bitlock, NFS_INO_FLUSHING); - if (err < 0) goto out_err; err = pgio.pg_error; |
