In f2fs_file_write_iter(), let's use f2fs_overwrite_io() to check whethere it is overwrite case, for such case, we can skip f2fs_preallocate_blocks() in order to avoid f2fs_do_map_lock(), which may be blocked by checkpoint() potentially.
Signed-off-by: Chao Yu <[email protected]> --- fs/f2fs/file.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 13deae03df06..51fecb2f4db5 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -4321,6 +4321,10 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) preallocated = true; target_size = iocb->ki_pos + iov_iter_count(from); + if (f2fs_overwrite_io(inode, iocb->ki_pos, + iov_iter_count(from))) + goto write; + err = f2fs_preallocate_blocks(iocb, from); if (err) { out_err: -- 2.32.0 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
