asgardius/android_kernel_motorola_sm6225
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ANDROID: Incremental fs: Fix scheduling while atomic error

Browse source 
If an incfs file is created, then the file system is sync'd,on opening
the incfs file inode_set reads the size from the backing file from
within iget5_locked, causing this error.

Test: incfs_test passes, this no longer occurs
Bug: 156413528
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: I8939c4afa514d39d251c044d7680cfc69272669e
This commit is contained in:
Paul Lawrence 2020-05-12 15:50:04 -07:00
parent adb33b84e3
commit c92446c89f
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
fs/incfs/vfs.c
View file

@ -206,6 +206,8 @@ struct inode_search {
unsigned long ino;
struct dentry *backing_dentry;
size_t size;
};
enum parse_parameter {
@ -364,7 +366,7 @@ static int inode_set(struct inode *inode, void *opaque)
fsstack_copy_attr_all(inode, backing_inode);
if (S_ISREG(inode->i_mode)) {
u64 size = read_size_attr(backing_dentry);
u64 size = search->size;
inode->i_size = size;
inode->i_blocks = get_blocks_count_for_size(size);
@ -440,7 +442,8 @@ static struct inode *fetch_regular_inode(struct super_block *sb,
struct inode *backing_inode = d_inode(backing_dentry);
struct inode_search search = {
.ino = backing_inode->i_ino,
.backing_dentry = backing_dentry
.backing_dentry = backing_dentry,
.size = read_size_attr(backing_dentry),
};
struct inode *inode = iget5_locked(sb, search.ino, inode_test,
inode_set, &search);