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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-30 19:03:48 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-30 19:03:48 -0800
commitefd52b5d363e3e3b6224ad39949219c0df117c91 (patch)
tree2d885d2f431a324af58d8f267755240bff3e32da /fs/nfs/inode.c
parent1ed2d76e0213751c82e3a242b61b0883daf330df (diff)
parente231c6879cfd44e4fffd384bb6dd7d313249a523 (diff)
downloadlinux-efd52b5d363e3e3b6224ad39949219c0df117c91.tar.bz2
Merge tag 'nfs-for-4.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Highlights include: Stable bugfixes: - Fix breakages in the nfsstat utility due to the inclusion of the NFSv4 LOOKUPP operation - Fix a NULL pointer dereference in nfs_idmap_prepare_pipe_upcall() due to nfs_idmap_legacy_upcall() being called without an 'aux' parameter - Fix a refcount leak in the standard O_DIRECT error path - Fix a refcount leak in the pNFS O_DIRECT fallback to MDS path - Fix CPU latency issues with nfs_commit_release_pages() - Fix the LAYOUTUNAVAILABLE error case in the file layout type - NFS: Fix a race between mmap() and O_DIRECT Features: - Support the statx() mask and query flags to enable optimisations when the user is requesting only attributes that are already up to date in the inode cache, or is specifying the AT_STATX_DONT_SYNC flag - Add a module alias for the SCSI pNFS layout type Bugfixes: - Automounting when resolving a NFSv4 referral should preserve the RDMA transport protocol settings - Various other RDMA bugfixes from Chuck - pNFS block layout fixes - Always set NFS_LOCK_LOST when a lock is lost" * tag 'nfs-for-4.16-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (69 commits) NFS: Fix a race between mmap() and O_DIRECT NFS: Remove a redundant call to unmap_mapping_range() pnfs/blocklayout: Ensure disk address in block device map pnfs/blocklayout: pnfs_block_dev_map uses bytes, not sectors lockd: Fix server refcounting SUNRPC: Fix null rpc_clnt dereference in rpc_task_queued tracepoint SUNRPC: Micro-optimize __rpc_execute SUNRPC: task_run_action should display tk_callback sunrpc: Format RPC events consistently for display SUNRPC: Trace xprt_timer events xprtrdma: Correct some documenting comments xprtrdma: Fix "bytes registered" accounting xprtrdma: Instrument allocation/release of rpcrdma_req/rep objects xprtrdma: Add trace points to instrument QP and CQ access upcalls xprtrdma: Add trace points in the client-side backchannel code paths xprtrdma: Add trace points for connect events xprtrdma: Add trace points to instrument MR allocation and recovery xprtrdma: Add trace points to instrument memory invalidation xprtrdma: Add trace points in reply decoder path xprtrdma: Add trace points to instrument memory registration ..
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c53
1 files changed, 39 insertions, 14 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 93552c482992..ceeaf0fb6657 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -735,12 +735,20 @@ int nfs_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags)
{
struct inode *inode = d_inode(path->dentry);
- int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
+ struct nfs_server *server = NFS_SERVER(inode);
+ unsigned long cache_validity;
int err = 0;
+ bool force_sync = query_flags & AT_STATX_FORCE_SYNC;
+ bool do_update = false;
trace_nfs_getattr_enter(inode);
+
+ if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync)
+ goto out_no_update;
+
/* Flush out writes to the server in order to update c/mtime. */
- if (S_ISREG(inode->i_mode)) {
+ if ((request_mask & (STATX_CTIME|STATX_MTIME)) &&
+ S_ISREG(inode->i_mode)) {
err = filemap_write_and_wait(inode->i_mapping);
if (err)
goto out;
@@ -757,24 +765,42 @@ int nfs_getattr(const struct path *path, struct kstat *stat,
*/
if ((path->mnt->mnt_flags & MNT_NOATIME) ||
((path->mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
- need_atime = 0;
-
- if (need_atime || nfs_need_revalidate_inode(inode)) {
- struct nfs_server *server = NFS_SERVER(inode);
-
+ request_mask &= ~STATX_ATIME;
+
+ /* Is the user requesting attributes that might need revalidation? */
+ if (!(request_mask & (STATX_MODE|STATX_NLINK|STATX_ATIME|STATX_CTIME|
+ STATX_MTIME|STATX_UID|STATX_GID|
+ STATX_SIZE|STATX_BLOCKS)))
+ goto out_no_revalidate;
+
+ /* Check whether the cached attributes are stale */
+ do_update |= force_sync || nfs_attribute_cache_expired(inode);
+ cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
+ do_update |= cache_validity &
+ (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL);
+ if (request_mask & STATX_ATIME)
+ do_update |= cache_validity & NFS_INO_INVALID_ATIME;
+ if (request_mask & (STATX_CTIME|STATX_MTIME))
+ do_update |= cache_validity & NFS_INO_REVAL_PAGECACHE;
+ if (do_update) {
+ /* Update the attribute cache */
if (!(server->flags & NFS_MOUNT_NOAC))
nfs_readdirplus_parent_cache_miss(path->dentry);
else
nfs_readdirplus_parent_cache_hit(path->dentry);
err = __nfs_revalidate_inode(server, inode);
+ if (err)
+ goto out;
} else
nfs_readdirplus_parent_cache_hit(path->dentry);
- if (!err) {
- generic_fillattr(inode, stat);
- stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
- if (S_ISDIR(inode->i_mode))
- stat->blksize = NFS_SERVER(inode)->dtsize;
- }
+out_no_revalidate:
+ /* Only return attributes that were revalidated. */
+ stat->result_mask &= request_mask;
+out_no_update:
+ generic_fillattr(inode, stat);
+ stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
+ if (S_ISDIR(inode->i_mode))
+ stat->blksize = NFS_SERVER(inode)->dtsize;
out:
trace_nfs_getattr_exit(inode, err);
return err;
@@ -1144,7 +1170,6 @@ static int nfs_invalidate_mapping(struct inode *inode, struct address_space *map
if (mapping->nrpages != 0) {
if (S_ISREG(inode->i_mode)) {
- unmap_mapping_range(mapping, 0, 0, 0);
ret = nfs_sync_mapping(mapping);
if (ret < 0)
return ret;