diff options
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/dir.c | 7 | ||||
| -rw-r--r-- | fs/nfs/filelayout/filelayout.c | 8 |
2 files changed, 14 insertions, 1 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index ea1ceffa1d3a..f7e4a88d5d92 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2957,12 +2957,14 @@ static u64 nfs_access_login_time(const struct task_struct *task, const struct cred *cred) { const struct task_struct *parent; + const struct cred *pcred; u64 ret; rcu_read_lock(); for (;;) { parent = rcu_dereference(task->real_parent); - if (parent == task || cred_fscmp(parent->cred, cred) != 0) + pcred = rcu_dereference(parent->cred); + if (parent == task || cred_fscmp(pcred, cred) != 0) break; task = parent; } @@ -3023,6 +3025,7 @@ static int nfs_access_get_cached_rcu(struct inode *inode, const struct cred *cre * but do it without locking. */ struct nfs_inode *nfsi = NFS_I(inode); + u64 login_time = nfs_access_login_time(current, cred); struct nfs_access_entry *cache; int err = -ECHILD; struct list_head *lh; @@ -3037,6 +3040,8 @@ static int nfs_access_get_cached_rcu(struct inode *inode, const struct cred *cre cache = NULL; if (cache == NULL) goto out; + if ((s64)(login_time - cache->timestamp) > 0) + goto out; if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_ACCESS)) goto out; *mask = cache->mask; diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index ad34a33b0737..4974cd18ca46 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -783,6 +783,12 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, return &fl->generic_hdr; } +static bool +filelayout_lseg_is_striped(const struct nfs4_filelayout_segment *flseg) +{ + return flseg->num_fh > 1; +} + /* * filelayout_pg_test(). Called by nfs_can_coalesce_requests() * @@ -803,6 +809,8 @@ filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, size = pnfs_generic_pg_test(pgio, prev, req); if (!size) return 0; + else if (!filelayout_lseg_is_striped(FILELAYOUT_LSEG(pgio->pg_lseg))) + return size; /* see if req and prev are in the same stripe */ if (prev) { |