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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-18 23:52:08 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-18 23:52:08 +0400
commitead13aee235fa1619d85f2ab5cfb9308a19f8da3 (patch)
treef4f51cda0437d194219e1bfe450c01f4e006a30c /fs/nfs/nfs4file.c
parent929254d8da55a046fe792e79a220f83df761305d (diff)
parentb8fb9c30f25e45dab5d2cd310ab6913b6861d00f (diff)
downloadlinux-ead13aee235fa1619d85f2ab5cfb9308a19f8da3.tar.xz
Merge tag 'nfs-for-3.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Highlights include: Stable fixes: - fix an uninitialised pointer Oops in the writeback error path - fix a bogus warning (and early exit from the loop) in nfs_generic_pgio() Features: - Add NFSv4.2 SEEK feature and client support for lseek(SEEK_HOLE/SEEK_DATA) Other fixes: - pnfs: replace broken pnfs_put_lseg_async - Remove dead prototype for nfs4_insert_deviceid_node" * tag 'nfs-for-3.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFS: Fix a bogus warning in nfs_generic_pgio NFS: Fix an uninitialised pointer Oops in the writeback error path NFSv4.1/pnfs: replace broken pnfs_put_lseg_async NFSv4: Remove dead prototype for nfs4_insert_deviceid_node() NFS: Implement SEEK
Diffstat (limited to 'fs/nfs/nfs4file.c')
-rw-r--r--fs/nfs/nfs4file.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 3e987ad9ae25..c51fb4db9bfe 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -8,6 +8,10 @@
#include "fscache.h"
#include "pnfs.h"
+#ifdef CONFIG_NFS_V4_2
+#include "nfs42.h"
+#endif
+
#define NFSDBG_FACILITY NFSDBG_FILE
static int
@@ -115,8 +119,29 @@ nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
return ret;
}
+#ifdef CONFIG_NFS_V4_2
+static loff_t nfs4_file_llseek(struct file *filep, loff_t offset, int whence)
+{
+ loff_t ret;
+
+ switch (whence) {
+ case SEEK_HOLE:
+ case SEEK_DATA:
+ ret = nfs42_proc_llseek(filep, offset, whence);
+ if (ret != -ENOTSUPP)
+ return ret;
+ default:
+ return nfs_file_llseek(filep, offset, whence);
+ }
+}
+#endif /* CONFIG_NFS_V4_2 */
+
const struct file_operations nfs4_file_operations = {
+#ifdef CONFIG_NFS_V4_2
+ .llseek = nfs4_file_llseek,
+#else
.llseek = nfs_file_llseek,
+#endif
.read = new_sync_read,
.write = new_sync_write,
.read_iter = nfs_file_read,