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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-06-01 18:23:01 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-06-22 09:59:42 -0400
commit6b56a89833fa7903595c8d138bb4927187315cba (patch)
tree77160ce6d2b08a121542d47f1d889011c595c464 /fs/nfs/write.c
parentca0daa277acac1029f74d9fea838c9e507398226 (diff)
downloadlinux-6b56a89833fa7903595c8d138bb4927187315cba.tar.bz2
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/nfs/write.c')
-rw-r--r--fs/nfs/write.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index e1c74d3db64d..980d44f3a84c 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;