From: Eric Biggers <[email protected]> Add support for STATX_DIOALIGN to f2fs, so that direct I/O alignment restrictions are exposed to userspace in a generic way.
Signed-off-by: Eric Biggers <[email protected]> --- fs/f2fs/file.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 1b452bb75af29..11d75aa3da185 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -852,6 +852,21 @@ int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path, stat->btime.tv_nsec = fi->i_crtime.tv_nsec; } + /* + * Return the DIO alignment restrictions if requested. We only return + * this information when requested, since on encrypted files it might + * take a fair bit of work to get if the file wasn't opened recently. + */ + if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->i_mode)) { + unsigned int bsize = i_blocksize(inode); + + stat->result_mask |= STATX_DIOALIGN; + if (!f2fs_force_buffered_io(inode)) { + stat->dio_mem_align = bsize; + stat->dio_offset_align = bsize; + } + } + flags = fi->i_flags; if (flags & F2FS_COMPR_FL) stat->attributes |= STATX_ATTR_COMPRESSED; -- 2.36.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
