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PR/41068 CVS commit: src/sys/fs/tmpfs
The following reply was made to PR kern/41068; it has been noted by GNATS.
From: "Mindaugas Rasiukevicius" <rmind%netbsd.org@localhost>
Subject: PR/41068 CVS commit: src/sys/fs/tmpfs
Date: Fri, 8 Nov 2013 15:44:23 +0000
Module Name: src
Committed By: rmind
Date: Fri Nov 8 15:44:23 UTC 2013
src/sys/fs/tmpfs: tmpfs.h tmpfs_rename.c tmpfs_subr.c tmpfs_vfsops.c
tmpfs: replace the broken tmpfs_dircookie() logic which uses the node
address truncated to 31 bits (required for 32-bit readdir compatibility,
e.g. linux32). Instead, assign 2^31 range using the following logic:
- The first half of the 2^31 is assigned incrementally (the fast path).
- When exceeded, use the second half of 2^31, but manage with vmem(9).
It will require 2 billion files per-directory to trigger vmem(9) usage.
Also, while here, add some fixes for tmpfs_unmount().
Should fix PR/47739, PR/47480, PR/46088 and PR/41068.
Thanks to wiz@ for stress testing.
To generate a diff of this commit:
cvs rdiff -u -r1.45 -r1.46 src/sys/fs/tmpfs/tmpfs.h
cvs rdiff -u -r1.4 -r1.5 src/sys/fs/tmpfs/tmpfs_rename.c
cvs rdiff -u -r1.82 -r1.83 src/sys/fs/tmpfs/tmpfs_subr.c
cvs rdiff -u -r1.52 -r1.53 src/sys/fs/tmpfs/tmpfs_vfsops.c
cvs rdiff -u -r1.105 -r1.106 src/sys/fs/tmpfs/tmpfs_vnops.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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