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ANDROID: Incremental fs: Fix issues with very large files

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Test: incfs_test passes
Bug: 155590527
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: Iaecfcd40e8c089d11b34c7aff2090fbfe0c36219
(cherry picked from commit 3e4fa206ce8ae4d3141af7514cb5d3d813cd4290)
This commit is contained in:
Paul Lawrence 2020-05-04 10:55:19 -07:00
parent a810d3c5bf
commit e282124750
2 changed files with 64 additions and 3 deletions
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7
fs/incfs/vfs.c
View File

@ -896,7 +896,8 @@ static int init_new_file(struct mount_info *mi, struct dentry *dentry,
.mnt = mi->mi_backing_dir_path.mnt,
.dentry = dentry
};
new_file = dentry_open(&path, O_RDWR | O_NOATIME, mi->mi_owner);
new_file = dentry_open(&path, O_RDWR | O_NOATIME | O_LARGEFILE,
mi->mi_owner);
if (IS_ERR(new_file)) {
error = PTR_ERR(new_file);
@ -1904,8 +1905,8 @@ static int file_open(struct inode *inode, struct file *file)
int err = 0;
get_incfs_backing_path(file->f_path.dentry, &backing_path);
backing_file = dentry_open(&backing_path, O_RDWR | O_NOATIME,
mi->mi_owner);
backing_file = dentry_open(
&backing_path, O_RDWR | O_NOATIME | O_LARGEFILE, mi->mi_owner);
path_put(&backing_path);
if (IS_ERR(backing_file)) {

60
tools/testing/selftests/filesystems/incfs/incfs_test.c
View File

@ -2609,6 +2609,65 @@ failure:
return TEST_FAILURE;
}
static int large_file(char *mount_dir)
{
char *backing_dir;
int cmd_fd = -1;
int i;
int result = TEST_FAILURE;
uint8_t data[INCFS_DATA_FILE_BLOCK_SIZE] = {};
int block_count = 3LL * 1024 * 1024 * 1024 / INCFS_DATA_FILE_BLOCK_SIZE;
struct incfs_fill_block *block_buf =
calloc(block_count, sizeof(struct incfs_fill_block));
struct incfs_fill_blocks fill_blocks = {
.count = block_count,
.fill_blocks = ptr_to_u64(block_buf),
};
incfs_uuid_t id;
int fd;
backing_dir = create_backing_dir(mount_dir);
if (!backing_dir)
goto failure;
if (mount_fs_opt(mount_dir, backing_dir, "readahead=0", false) != 0)
goto failure;
cmd_fd = open_commands_file(mount_dir);
if (cmd_fd < 0)
goto failure;
if (emit_file(cmd_fd, NULL, "very_large_file", &id,
(uint64_t)block_count * INCFS_DATA_FILE_BLOCK_SIZE,
NULL) < 0)
goto failure;
for (i = 0; i < block_count; i++) {
block_buf[i].compression = COMPRESSION_NONE;
block_buf[i].block_index = i;
block_buf[i].data_len = INCFS_DATA_FILE_BLOCK_SIZE;
block_buf[i].data = ptr_to_u64(data);
}
fd = open_file_by_id(mount_dir, id, true);
if (fd < 0)
goto failure;
if (ioctl(fd, INCFS_IOC_FILL_BLOCKS, &fill_blocks) != block_count)
goto failure;
if (emit_file(cmd_fd, NULL, "very_very_large_file", &id, 1LL << 40,
NULL) < 0)
goto failure;
result = TEST_SUCCESS;
failure:
close(fd);
close(cmd_fd);
return result;
}
static char *setup_mount_dir()
{
struct stat st;
@ -2678,6 +2737,7 @@ int main(int argc, char *argv[])
MAKE_TEST(read_log_test),
MAKE_TEST(get_blocks_test),
MAKE_TEST(get_hash_blocks_test),
MAKE_TEST(large_file),
};
#undef MAKE_TEST