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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-20 11:29:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-20 11:29:32 -0700
commit12e24f34cb0d55efd08c18b2112507d4bf498008 (patch)
tree83b07be17b8ef45f42360a3b9159b3aaae3fbad4 /fs
parent1eb51c33b21ffa3fceb634d1d6bcd6488c79bc26 (diff)
parenteadc84cc01e04f9f74ec2de0c9355be035c7b396 (diff)
Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (49 commits) perfcounter: Handle some IO return values perf_counter: Push perf_sample_data through the swcounter code perf_counter tools: Define and use our own u64, s64 etc. definitions perf_counter: Close race in perf_lock_task_context() perf_counter, x86: Improve interactions with fast-gup perf_counter: Simplify and fix task migration counting perf_counter tools: Add a data file header perf_counter: Update userspace callchain sampling uses perf_counter: Make callchain samples extensible perf report: Filter to parent set by default perf_counter tools: Handle lost events perf_counter: Add event overlow handling fs: Provide empty .set_page_dirty() aop for anon inodes perf_counter: tools: Makefile tweaks for 64-bit powerpc perf_counter: powerpc: Add processor back-end for MPC7450 family perf_counter: powerpc: Make powerpc perf_counter code safe for 32-bit kernels perf_counter: powerpc: Change how processor-specific back-ends get selected perf_counter: powerpc: Use unsigned long for register and constraint values perf_counter: powerpc: Enable use of software counters on 32-bit powerpc perf_counter tools: Add and use isprint() ...
Diffstat (limited to 'fs')
-rw-r--r--fs/anon_inodes.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 1dd96d4406c..47d4a01c539 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -52,6 +52,19 @@ static const struct dentry_operations anon_inodefs_dentry_operations = {
.d_delete = anon_inodefs_delete_dentry,
};
+/*
+ * nop .set_page_dirty method so that people can use .page_mkwrite on
+ * anon inodes.
+ */
+static int anon_set_page_dirty(struct page *page)
+{
+ return 0;
+};
+
+static const struct address_space_operations anon_aops = {
+ .set_page_dirty = anon_set_page_dirty,
+};
+
/**
* anon_inode_getfd - creates a new file instance by hooking it up to an
* anonymous inode, and a dentry that describe the "class"
@@ -151,6 +164,8 @@ static struct inode *anon_inode_mkinode(void)
inode->i_fop = &anon_inode_fops;
+ inode->i_mapping->a_ops = &anon_aops;
+
/*
* Mark the inode dirty from the very beginning,
* that way it will never be moved to the dirty