Hi, This is V2 of patches which tries to fix syncfs() for overlayfs to return error code when sync_filesystem(upper_sb) returns error or there are writeback errors on upper_sb. I posted V1 of patch here. https://lore.kernel.org/linux-fsdevel/20201216143802.GA10550@xxxxxxxxxx/ This is just compile tested patch series. Trying to get early feedback to figure out what direction to move in to fix this issue. Thanks Vivek Vivek Goyal (3): vfs: add new f_op->syncfs vector overlayfs: Implement f_op->syncfs() call overlayfs: Check writeback errors w.r.t upper in ->syncfs() fs/overlayfs/file.c | 1 + fs/overlayfs/overlayfs.h | 3 +++ fs/overlayfs/ovl_entry.h | 2 ++ fs/overlayfs/readdir.c | 1 + fs/overlayfs/super.c | 41 +++++++++++++++++++++++++++++++++++++++- fs/sync.c | 29 +++++++++++++++++++--------- include/linux/fs.h | 1 + 7 files changed, 68 insertions(+), 10 deletions(-) -- 2.25.4
