[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/fs/ext2/file.c b/ap/os/linux/linux-3.4.x/fs/ext2/file.c
new file mode 100644
index 0000000..a5b3a5d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/fs/ext2/file.c
@@ -0,0 +1,107 @@
+/*
+ * linux/fs/ext2/file.c
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * from
+ *
+ * linux/fs/minix/file.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * ext2 fs regular file handling primitives
+ *
+ * 64-bit file support on 64-bit platforms by Jakub Jelinek
+ * (jj@sunsite.ms.mff.cuni.cz)
+ */
+
+#include <linux/time.h>
+#include <linux/pagemap.h>
+#include <linux/quotaops.h>
+#include "ext2.h"
+#include "xattr.h"
+#include "acl.h"
+
+/*
+ * Called when filp is released. This happens when all file descriptors
+ * for a single struct file are closed. Note that different open() calls
+ * for the same file yield different struct file structures.
+ */
+static int ext2_release_file (struct inode * inode, struct file * filp)
+{
+ if (filp->f_mode & FMODE_WRITE) {
+ mutex_lock(&EXT2_I(inode)->truncate_mutex);
+ ext2_discard_reservation(inode);
+ mutex_unlock(&EXT2_I(inode)->truncate_mutex);
+ }
+ return 0;
+}
+
+int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
+{
+ int ret;
+ struct super_block *sb = file->f_mapping->host->i_sb;
+ struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping;
+
+ ret = generic_file_fsync(file, start, end, datasync);
+ if (ret == -EIO || test_and_clear_bit(AS_EIO, &mapping->flags)) {
+ /* We don't really know where the IO error happened... */
+ ext2_error(sb, __func__,
+ "detected IO error when writing metadata buffers");
+ ret = -EIO;
+ }
+ return ret;
+}
+
+/*
+ * We have mostly NULL's here: the current defaults are ok for
+ * the ext2 filesystem.
+ */
+const struct file_operations ext2_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+ .unlocked_ioctl = ext2_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ext2_compat_ioctl,
+#endif
+ .mmap = generic_file_mmap,
+ .open = dquot_file_open,
+ .release = ext2_release_file,
+ .fsync = ext2_fsync,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+};
+
+#ifdef CONFIG_EXT2_FS_XIP
+const struct file_operations ext2_xip_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = xip_file_read,
+ .write = xip_file_write,
+ .unlocked_ioctl = ext2_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ext2_compat_ioctl,
+#endif
+ .mmap = xip_file_mmap,
+ .open = dquot_file_open,
+ .release = ext2_release_file,
+ .fsync = ext2_fsync,
+};
+#endif
+
+const struct inode_operations ext2_file_inode_operations = {
+#ifdef CONFIG_EXT2_FS_XATTR
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
+ .listxattr = ext2_listxattr,
+ .removexattr = generic_removexattr,
+#endif
+ .setattr = ext2_setattr,
+ .get_acl = ext2_get_acl,
+ .fiemap = ext2_fiemap,
+};