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| author | Dave Hansen <haveblue@us.ibm.com> | 2008-02-15 23:37:30 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-04-19 06:25:32 +0200 |
| commit | 8366025eb80dfa0d8d94b286d53027081c280ef1 (patch) | |
| tree | 052c9244cd9d763ad8467bb95b25d903d58b7f11 /init | |
| parent | [PATCH] merge open_namei() and do_filp_open() (diff) | |
| download | linux-8366025eb80dfa0d8d94b286d53027081c280ef1.tar.xz linux-8366025eb80dfa0d8d94b286d53027081c280ef1.zip | |
[PATCH] r/o bind mounts: stub functions
This patch adds two function mnt_want_write() and mnt_drop_write(). These are
used like a lock pair around and fs operations that might cause a write to the
filesystem.
Before these can become useful, we must first cover each place in the VFS
where writes are performed with a want/drop pair. When that is complete, we
can actually introduce code that will safely check the counts before allowing
r/w<->r/o transitions to occur.
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions