This is a note to let you know that I've just added the patch titled
fuse: fix attributes after open(O_TRUNC)
to the 2.6.36-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fuse-fix-attributes-after-open-o_trunc.patch
and it can be found in the queue-2.6.36 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From a0822c55779d9319939eac69f00bb729ea9d23da Mon Sep 17 00:00:00 2001
From: Ken Sumrall <[email protected]>
Date: Wed, 24 Nov 2010 12:57:00 -0800
Subject: fuse: fix attributes after open(O_TRUNC)
From: Ken Sumrall <[email protected]>
commit a0822c55779d9319939eac69f00bb729ea9d23da upstream.
The attribute cache for a file was not being cleared when a file is opened
with O_TRUNC.
If the filesystem's open operation truncates the file ("atomic_o_trunc"
feature flag is set) then the kernel should invalidate the cached st_mtime
and st_ctime attributes.
Also i_size should be explicitly be set to zero as it is used sometimes
without refreshing the cache.
Signed-off-by: Ken Sumrall <[email protected]>
Cc: Anfei <[email protected]>
Cc: "Anand V. Avati" <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/fuse/file.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -134,6 +134,7 @@ EXPORT_SYMBOL_GPL(fuse_do_open);
void fuse_finish_open(struct inode *inode, struct file *file)
{
struct fuse_file *ff = file->private_data;
+ struct fuse_conn *fc = get_fuse_conn(inode);
if (ff->open_flags & FOPEN_DIRECT_IO)
file->f_op = &fuse_direct_io_file_operations;
@@ -141,6 +142,15 @@ void fuse_finish_open(struct inode *inod
invalidate_inode_pages2(inode->i_mapping);
if (ff->open_flags & FOPEN_NONSEEKABLE)
nonseekable_open(inode, file);
+ if (fc->atomic_o_trunc && (file->f_flags & O_TRUNC)) {
+ struct fuse_inode *fi = get_fuse_inode(inode);
+
+ spin_lock(&fc->lock);
+ fi->attr_version = ++fc->attr_version;
+ i_size_write(inode, 0);
+ spin_unlock(&fc->lock);
+ fuse_invalidate_attr(inode);
+ }
}
int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.36/fuse-fix-attributes-after-open-o_trunc.patch
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