Changeset 77492 in vbox for trunk/src/VBox/Additions/common/VBoxService

Timestamp:

Feb 28, 2019 1:55:50 AM (6 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

129084

Message:

linux/vboxsf: Default dentry/stat TTL to 200 ms as on solaris. bugref:9172

• Use the same stat/direntry TTL default value as we do on solaris (200 ms).
• Changed the ttl=xxx mount option to be milliseconds rather than jiffies.
• Force inode restat in sf_setattr() as a temp workaround for issue when TTL is non-zero (see older @todo in code).
• Have separate dentry and inode update jiffies.
• Reworked sf_dentry_revalidate and made it avoid restatting inodes more aggressively.
• Extend TTL of parent dentry after successful opens and creation (does not extend to inodes, of course).
• Stop using dentry::d_time like the rest of the file systems did around 4.9.0 (kernels back to 2.4.0 never seem to touch this from what I can tell, it was an file system internal field).
• Since we only have one set of dentry ops, set super_block::s_d_op rather than calling d_set_d_op().

File:

• trunk/src/VBox/Additions/common/VBoxService/VBoxServiceAutoMount.cpp (modified) (2 diffs)

trunk/src/VBox/Additions/common/VBoxService/VBoxServiceAutoMount.cpp

@@ -378 +378 @@
         0,                     /* uid */
         (int)grp_vboxsf->gr_gid, /* gid */
-        0,                     /* ttl */
+        -1,                    /* ttl */
         0770,                  /* dmode, owner and group "vboxsf" have full access */
         0770,                  /* fmode, owner and group "vboxsf" have full access */
@@ -1473 +1473 @@
     MntInfo.signature[2] = VBSF_MOUNT_SIGNATURE_BYTE_2;
     MntInfo.length       = sizeof(MntInfo);
+    MntInfo.ttl          = MntOpts.uid   = -1;
     MntInfo.uid          = MntOpts.uid   = 0;
     MntInfo.gid          = MntOpts.gid   = gidMount;