The patch titled
fuse: fix attributes after open(O_TRUNC)
has been removed from the -mm tree. Its filename was
fuse-fix-attributes-after-openo_trunc.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: fuse: fix attributes after open(O_TRUNC)
From: Ken Sumrall <ksumrall@xxxxxxxxxxx>
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 <ksumrall@xxxxxxxxxxx>
Cc: Anfei <anfei.zhou@xxxxxxxxx>
Cc: "Anand V. Avati" <avati@xxxxxxxxxxx>
Signed-off-by: Miklos Szeredi <miklos@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fuse/file.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN fs/fuse/file.c~fuse-fix-attributes-after-openo_trunc fs/fuse/file.c
--- a/fs/fuse/file.c~fuse-fix-attributes-after-openo_trunc
+++ a/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 -mm which might be from ksumrall@xxxxxxxxxxx are
origin.patch
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