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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-08-01 15:39:46 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-08-15 11:54:47 -0400
commita6b6d5b85abf4914bbceade5dddd54c345c64136 (patch)
tree2cca0a777a06004ba9e8a212ce8cf8f470f7fc68 /fs/nfs/inode.c
parente824f99adaaf1ed0e03eac8574599af6d992163d (diff)
NFS: Use an atomic_long_t to count the number of requests
Rather than forcing us to take the inode->i_lock just in order to bump the number. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 34d9ebbc0dfd..0480eb02299a 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1285,7 +1285,6 @@ static bool nfs_file_has_buffered_writers(struct nfs_inode *nfsi)
static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
- struct nfs_inode *nfsi = NFS_I(inode);
unsigned long ret = 0;
if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
@@ -1315,7 +1314,7 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr
if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE)
&& (fattr->valid & NFS_ATTR_FATTR_SIZE)
&& i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size)
- && nfsi->nrequests == 0) {
+ && !nfs_have_writebacks(inode)) {
i_size_write(inode, nfs_size_to_loff_t(fattr->size));
ret |= NFS_INO_INVALID_ATTR;
}
@@ -1823,7 +1822,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (new_isize != cur_isize) {
/* Do we perhaps have any outstanding writes, or has
* the file grown beyond our last write? */
- if (nfsi->nrequests == 0 || new_isize > cur_isize) {
+ if (!nfs_have_writebacks(inode) || new_isize > cur_isize) {
i_size_write(inode, new_isize);
if (!have_writers)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
@@ -2012,7 +2011,7 @@ static void init_once(void *foo)
INIT_LIST_HEAD(&nfsi->access_cache_entry_lru);
INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
INIT_LIST_HEAD(&nfsi->commit_info.list);
- nfsi->nrequests = 0;
+ atomic_long_set(&nfsi->nrequests, 0);
nfsi->commit_info.ncommit = 0;
atomic_set(&nfsi->commit_info.rpcs_out, 0);
init_rwsem(&nfsi->rmdir_sem);