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| author | Eric van Gyzen <vangyzen@FreeBSD.org> | 2015-06-02 18:37:04 +0000 |
|---|---|---|
| committer | Eric van Gyzen <vangyzen@FreeBSD.org> | 2015-06-02 18:37:04 +0000 |
| commit | 63e4c6cdf955492b1c70cdc37f69c1070edc004c (patch) | |
| tree | 79268f7612e1040e6175651adea6aad1b5dd2a45 /sys/fs/procfs | |
| parent | b7a728aaba92c2d9f3d5312606bf85fcf38fe722 (diff) | |
| download | src-63e4c6cdf955492b1c70cdc37f69c1070edc004c.tar.gz src-63e4c6cdf955492b1c70cdc37f69c1070edc004c.zip | |
Provide vnode in memory map info for files on tmpfs
When providing memory map information to userland, populate the vnode pointer
for tmpfs files. Set the memory mapping to appear as a vnode type, to match
FreeBSD 9 behavior.
This fixes the use of tmpfs files with the dtrace pid provider,
procstat -v, procfs, linprocfs, pmc (pmcstat), and ptrace (PT_VM_ENTRY).
Submitted by: Eric Badger <eric@badgerio.us> (initial revision)
Obtained from: Dell Inc.
PR: 198431
MFC after: 2 weeks
Reviewed by: jhb
Approved by: kib (mentor)
Notes
Notes:
svn path=/head/; revision=283924
Diffstat (limited to 'sys/fs/procfs')
| -rw-r--r-- | sys/fs/procfs/procfs_map.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/sys/fs/procfs/procfs_map.c b/sys/fs/procfs/procfs_map.c index eae70229e6bd..b00aac3ac891 100644 --- a/sys/fs/procfs/procfs_map.c +++ b/sys/fs/procfs/procfs_map.c @@ -159,11 +159,11 @@ procfs_doprocmap(PFS_FILL_ARGS) freepath = NULL; fullpath = "-"; if (lobj) { + vp = NULL; switch (lobj->type) { default: case OBJT_DEFAULT: type = "default"; - vp = NULL; break; case OBJT_VNODE: type = "vnode"; @@ -171,13 +171,19 @@ procfs_doprocmap(PFS_FILL_ARGS) vref(vp); break; case OBJT_SWAP: - type = "swap"; - vp = NULL; + if ((lobj->flags & OBJ_TMPFS_NODE) != 0) { + type = "vnode"; + if ((lobj->flags & OBJ_TMPFS) != 0) { + vp = lobj->un_pager.swp.swp_tmpfs; + vref(vp); + } + } else { + type = "swap"; + } break; case OBJT_SG: case OBJT_DEVICE: type = "device"; - vp = NULL; break; } if (lobj != obj) |