On Fri, Jan 23, 2015 at 01:34:45PM +0100, Robert Baldyga wrote: > On 01/23/2015 01:21 PM, Michał Nazarewicz wrote: > > 23 sty 2015 10:28 "Robert Baldyga" <r.baldyga@xxxxxxxxxxx > > <mailto:r.baldyga@xxxxxxxxxxx>> napisał(a): > >> Add eventfd which notifies userspace about ep0 events and AIO completion > >> events. It simplifies using of FunctionFS with event loop, because now > >> we need to poll on single file (instead of polling on ep0 and eventfd's > >> supplied to AIO layer). > >> > >> FunctionFS eventfd is not triggered if another eventfd is supplied to > >> AIO layer (in AIO request). It can be useful, for example, when we want > >> to handle AIO transations for chosen endpoint in separate thread. > >> > >> Signed-off-by: Robert Baldyga > > > > I don't know much about eventfd interface bit from ffs point of view: > > > > Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx <mailto:mina86@xxxxxxxxxx>> > > > >> @@ -2180,6 +2191,20 @@ static int __ffs_data_got_descs(struct ffs_data > > *ffs, > >> goto error; > >> } > >> > >> + if (flags & FUNCTIONFS_EVENTFD) { > >> + if (len < 4) > >> + goto error; > >> + ffs->ffs_eventfd = > >> + eventfd_ctx_fdget((int)get_unaligned_le32(data)); > >> + if (IS_ERR(ffs->ffs_eventfd)) { > >> + ffs->ffs_eventfd = NULL; > >> + ret = PTR_ERR(ffs->ffs_eventfd); > > > > Need to swap those lines. > > > >> + goto error; > >> + } > >> + data += 4; > >> + len -= 4; > >> + } > >> + > >> /* Read fs_count, hs_count and ss_count (if present) */ > >> for (i = 0; i < 3; ++i) { > >> if (!(flags & (1 << i))) { > > > > Good catch, thanks! Are you sending a new version, or should I fix this myself? -- balbi
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