全志Android8, Android 10限制存储500M问题
Android 系统内部默认会以500M或5%, 但是如果仅修改这里, 是没办法改变最低存储空间值的.
全志的/data/ 分区默认是500M, 写在内核中, 代码如下.
core/java/android/os/storage/StorageManager.java/** * Returns list of paths for all mountable volumes.* @hide*/@Deprecated@UnsupportedAppUsagepublic @NonNull String[] getVolumePaths() {StorageVolume[] volumes = getVolumeList();int count = volumes.length;String[] paths = new String[count];for (int i = 0; i < count; i++) {paths[i] = volumes[i].getPath();}return paths;} /** @removed */public @NonNull StorageVolume getPrimaryVolume() {return getPrimaryVolume(getVolumeList());} /** {@hide} */public static @NonNull StorageVolume getPrimaryVolume(StorageVolume[] volumes) {for (StorageVolume volume : volumes) {if (volume.isPrimary()) {return volume;}}throw new IllegalStateException("Missing primary storage");} private static final int DEFAULT_THRESHOLD_PERCENTAGE = 5; private static final long DEFAULT_THRESHOLD_MAX_BYTES = DataUnit.MEBIBYTES.toBytes(110);private static final int DEFAULT_CACHE_PERCENTAGE = 10;private static final long DEFAULT_CACHE_MAX_BYTES = DataUnit.GIBIBYTES.toBytes(5);private static final long DEFAULT_FULL_THRESHOLD_BYTES = DataUnit.MEBIBYTES.toBytes(1);diff --git a/kernel/linux-4.9/fs/quota/dquot.c b/kernel/linux-4.9/fs/quota/dquot.c
index 1b610332f..0c04325de 100644
--- a/kernel/linux-4.9/fs/quota/dquot.c
+++ b/kernel/linux-4.9/fs/quota/dquot.c
@@ -1319,7 +1319,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc,qsize_t tspace;struct super_block *sb = dquot->dq_sb;qsize_t free_space = sb->dq_op->get_sb_free_space(sb);
- qsize_t brsvlimit = 128000;
+ qsize_t brsvlimit = 25600; //100M 128000 = 500M;qsize_t uidlimit = 10000;const struct cred *cred = current_cred();diff --git a/kernel/linux-4.9/fs/sdcardfs/sdcardfs.h b/kernel/linux-4.9/fs/sdcardfs/sdcardfs.h
index fc6b3b715..620647275 100644
--- a/kernel/linux-4.9/fs/sdcardfs/sdcardfs.h
+++ b/kernel/linux-4.9/fs/sdcardfs/sdcardfs.h
@@ -606,7 +606,8 @@ static inline int check_min_free_space(struct dentry *dentry, size_t size, int dif ((u64)size > avail)return 0;- if (((avail - size) < (500 * 1024 * 1024)) && (cred->uid.val > 10000))
+ //if (((avail - size) < (500 * 1024 * 1024)) && (cred->uid.val > 10000))
+ if (((avail - size) < (100 * 1024 * 1024)) && (cred->uid.val > 10000))