diff options
Diffstat (limited to 'fs/fuse/file.c')
| -rw-r--r-- | fs/fuse/file.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 11404f8c21c7..5c5ed58d91a7 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1848,6 +1848,17 @@ int fuse_write_inode(struct inode *inode, struct writeback_control *wbc) struct fuse_file *ff; int err; + /* + * Inode is always written before the last reference is dropped and + * hence this should not be reached from reclaim. + * + * Writing back the inode from reclaim can deadlock if the request + * processing itself needs an allocation. Allocations triggering + * reclaim while serving a request can't be prevented, because it can + * involve any number of unrelated userspace processes. + */ + WARN_ON(wbc->for_reclaim); + ff = __fuse_write_file_get(fi); err = fuse_flush_times(inode, ff); if (ff) @@ -3002,6 +3013,8 @@ out: if (lock_inode) inode_unlock(inode); + fuse_flush_time_update(inode); + return err; } @@ -3111,6 +3124,8 @@ out: inode_unlock(inode_out); file_accessed(file_in); + fuse_flush_time_update(inode_out); + return err; } |