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Subject[PATCH 04/10] fuse: honor AT_STATX_DONT_SYNC
Date
The description of this flag says "Don't sync attributes with the server".
In other words: always use the attributes cached in the kernel and don't
send network or local messages to refresh the attributes.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
fs/fuse/dir.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 622081b97426..d2d1dbe1ef75 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -924,12 +924,13 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
}

static int fuse_update_get_attr(struct inode *inode, struct file *file,
- struct kstat *stat)
+ struct kstat *stat, unsigned int flags)
{
struct fuse_inode *fi = get_fuse_inode(inode);
int err = 0;

- if (time_before64(fi->i_time, get_jiffies_64())) {
+ if (!(flags & AT_STATX_DONT_SYNC) &&
+ time_before64(fi->i_time, get_jiffies_64())) {
forget_all_cached_acls(inode);
err = fuse_do_getattr(inode, stat, file);
} else if (stat) {
@@ -943,7 +944,7 @@ static int fuse_update_get_attr(struct inode *inode, struct file *file,

int fuse_update_attributes(struct inode *inode, struct file *file)
{
- return fuse_update_get_attr(inode, file, NULL);
+ return fuse_update_get_attr(inode, file, NULL, 0);
}

int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
@@ -1782,7 +1783,7 @@ static int fuse_getattr(const struct path *path, struct kstat *stat,
if (!fuse_allow_current_process(fc))
return -EACCES;

- return fuse_update_get_attr(inode, NULL, stat);
+ return fuse_update_get_attr(inode, NULL, stat, flags);
}

static const struct inode_operations fuse_dir_inode_operations = {
--
2.5.5
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