Linux 3.8: vmtruncate removal

vmtruncate had been deprecated for a while and has now been
removed.  Do things the new way based on truncate_setsize.

Reviewed-on: http://gerrit.openafs.org/8906
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
(cherry picked from commit d0479bbaf43900d6733c3f7517926ee9813c9610)

Change-Id: Iafc64e19544dec9fcaefad5ad274eac4133f4083
Reviewed-on: http://gerrit.openafs.org/8942
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Paul Smeddle <paul.smeddle@gmail.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>

diff --git a/acinclude.m4 b/acinclude.m4
index 0a05caac77ba9be08dd45e64b136237d5a6ba5eb..4223bb1877823d2a71f4c84a87e46d5cf4d48f47 100644 (file)
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -824,6 +824,7 @@ case $AFS_SYSNAME in *_linux* | *_umlinux*)
                 AC_CHECK_LINUX_STRUCT([file_operations], [sendfile], [fs.h])
                 AC_CHECK_LINUX_STRUCT([file_system_type], [mount], [fs.h])
                 AC_CHECK_LINUX_STRUCT([filename], [name], [fs.h])
+                AC_CHECK_LINUX_STRUCT([inode_operations], [truncate], [fs.h])
                 AC_CHECK_LINUX_STRUCT([key_type], [preparse], [key-type.h])
                 AC_CHECK_LINUX_STRUCT([nameidata], [path], [namei.h])
                 AC_CHECK_LINUX_STRUCT([proc_dir_entry], [owner], [proc_fs.h])

diff --git a/src/afs/LINUX/osi_compat.h b/src/afs/LINUX/osi_compat.h
index a777542c1f1eadc434e7cecd8fb65f99f165fec8..e8bf0037e5d1fc2265f72d4a68e84157f51484ce 100644 (file)
--- a/src/afs/LINUX/osi_compat.h
+++ b/src/afs/LINUX/osi_compat.h
@@ -537,4 +537,18 @@ afs_set_session_keyring(struct key *keyring)
     return old;
 }
 
+static inline int
+afs_truncate(struct inode *inode, int len)
+{
+    int code;
+#if defined(STRUCT_INODE_OPERATIONS_HAS_TRUNCATE)
+    code = vmtruncate(inode, len);
+#else
+    code = inode_newsize_ok(inode, len);
+    if (!code)
+        truncate_setsize(inode, len);
+#endif
+    return code;
+}
+
 #endif /* AFS_LINUX_OSI_COMPAT_H */

diff --git a/src/afs/LINUX/osi_vm.c b/src/afs/LINUX/osi_vm.c
index 2cd34f96311e8d2122fb0c0696d2d1abeb5fa7e0..8bc792e45535b87597597f665305abbefe222d88 100644 (file)
--- a/src/afs/LINUX/osi_vm.c
+++ b/src/afs/LINUX/osi_vm.c
@@ -51,8 +51,7 @@ osi_VM_FlushVCache(struct vcache *avc, int *slept)
     if (avc->opens != 0)
        return EBUSY;
 
-    return vmtruncate(ip, 0);
-    return 0;
+    return afs_truncate(ip, 0);
 }
 
 /* Try to invalidate pages, for "fs flush" or "fs flushv"; or
@@ -132,5 +131,5 @@ osi_VM_FlushPages(struct vcache *avc, afs_ucred_t *credp)
 void
 osi_VM_Truncate(struct vcache *avc, int alen, afs_ucred_t *acred)
 {
-    vmtruncate(AFSTOV(avc), alen);
+    afs_truncate(AFSTOV(avc), alen);
 }