diff options
| author | Daniel Rosenberg <drosen@google.com> | 2016-05-18 16:57:10 -0700 |
|---|---|---|
| committer | Daniel Rosenberg <drosen@google.com> | 2017-01-26 15:53:30 -0800 |
| commit | 640e5265032d2e36c8933f09657f34946fbf8259 (patch) | |
| tree | 8354e22ab8855511f9af142506bc340b057a33a2 /fs/sdcardfs/super.c | |
| parent | 1fb590f2d5ada66a89b82c7657b3002892c966b6 (diff) | |
ANDROID: sdcardfs: Added top to sdcardfs_inode_info
Adding packages to the package list and moving files
takes a large amount of locks, and is currently a
heavy operation. This adds a 'top' field to the
inode_info, which points to the inode for the top
most directory whose owner you would like to match.
On permission checks and get_attr, we look up the
owner based on the information at top. When we change
a package mapping, we need only modify the information
in the corresponding top inode_info's. When renaming,
we must ensure top is set correctly in all children.
This happens when an app specific folder gets moved
outside of the folder for that app.
Change-Id: Ib749c60b568e9a45a46f8ceed985c1338246ec6c
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Diffstat (limited to 'fs/sdcardfs/super.c')
| -rw-r--r-- | fs/sdcardfs/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/sdcardfs/super.c b/fs/sdcardfs/super.c index 1d6490128c99..0a465395aab7 100644 --- a/fs/sdcardfs/super.c +++ b/fs/sdcardfs/super.c @@ -126,6 +126,7 @@ static void sdcardfs_evict_inode(struct inode *inode) */ lower_inode = sdcardfs_lower_inode(inode); sdcardfs_set_lower_inode(inode, NULL); + set_top(SDCARDFS_I(inode), inode); iput(lower_inode); } |