/**
* ubifs_sync_wbufs_by_inode - synchronize write-buffers for an inode.
* @c: UBIFS file-system description object
* @inode: inode to synchronize
*
* This function synchronizes write-buffers which contain nodes belonging to
* @inode. Returns zero in case of success and a negative error code in case of
* failure.
*/
int ubifs_sync_wbufs_by_inode(struct ubifs_info *c, struct inode *inode)
{
int i, err = 0;
for (i = 0; i < c->jhead_cnt; i++) {
struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
if (i == GCHD)
/*
* GC head is special, do not look at it. Even if the
* head contains something related to this inode, it is
* a _copy_ of corresponding on-flash node which sits
* somewhere else.
*/
continue;
if (!wbuf_has_ino(wbuf, inode->i_ino))
continue;
mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
if (wbuf_has_ino(wbuf, inode->i_ino))
err = ubifs_wbuf_sync_nolock(wbuf);
mutex_unlock(&wbuf->io_mutex);
if (err) {
ubifs_ro_mode(c, err);
return err;
}
}
return 0;
}
/**
* ubifs_sync_wbufs_by_inodes - synchronize write-buffers which have data.
* belonging to specified inodes.
* @c: UBIFS file-system description object
* @inodes: array of inodes
* @count: number of elements in @inodes
*
* This function synchronizes write-buffers which contain nodes belonging to
* any inode specified in @inodes array. Returns zero in case of success and a
* negative error code in case of failure.
*/
int ubifs_sync_wbufs_by_inodes(struct ubifs_info *c,
struct inode * const *inodes, int count)
{
int i, j, err = 0;
ubifs_assert(count);
for (i = 0; i < c->jhead_cnt; i++) {
struct ubifs_wbuf *wbuf = &c->jheads[i].wbuf;
if (i == GCHD)
/*
* GC head is special, do not look at it. Even if the
* head contains something related to this inode, it is
* a _copy_ of corresponding on-flash node which sits
* somewhere else.
*/
continue;
for (j = 0; j < count && !err; j++)
if (wbuf_has_ino(wbuf, inodes[j]->i_ino)) {
mutex_lock_nested(&wbuf->io_mutex, wbuf->jhead);
if (wbuf_has_ino(wbuf, inodes[j]->i_ino))
err = ubifs_wbuf_sync_nolock(wbuf);
mutex_unlock(&wbuf->io_mutex);
break;
}
if (err) {
ubifs_ro_mode(c, err);
break;
}
}
return err;
}
