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Commit 738e0dcf authored by Thierry Strudel's avatar Thierry Strudel
Browse files

[DO NOT MERGE] Use FUSE_SHORTCIRCUIT if available 

Use a non yet maintainer reviewed kernel patch from QCOM that greatly
improves IO speed in case it is available from the device specific
kernel headers.

Bug: 24216004
Bug: 30222859
Change-Id: I4101d80082c9ad9d042dde5c620ddb309d193d52
parent 29e7e3ed

sdcard/sdcard.c

+17 −0
Original line number Diff line number Diff line
@@ -1221,7 +1221,13 @@ static int handle_open(struct fuse* fuse, struct fuse_handler* handler, 
    }

    out.fh = ptr_to_id(h);

    out.open_flags = 0;



#ifdef FUSE_SHORTCIRCUIT

    out.lower_fd = h->fd;

#else

    out.padding = 0;

#endif



    fuse_reply(fuse, hdr->unique, &out, sizeof(out));

    return NO_STATUS;

}
@@ -1385,7 +1391,13 @@ static int handle_opendir(struct fuse* fuse, struct fuse_handler* handler, 
    }

    out.fh = ptr_to_id(h);

    out.open_flags = 0;



#ifdef FUSE_SHORTCIRCUIT

    out.lower_fd = -1;

#else

    out.padding = 0;

#endif



    fuse_reply(fuse, hdr->unique, &out, sizeof(out));

    return NO_STATUS;

}
@@ -1467,6 +1479,11 @@ static int handle_init(struct fuse* fuse, struct fuse_handler* handler, 
    out.major = FUSE_KERNEL_VERSION;

    out.max_readahead = req->max_readahead;

    out.flags = FUSE_ATOMIC_O_TRUNC | FUSE_BIG_WRITES;



#ifdef FUSE_SHORTCIRCUIT

    out.flags |= FUSE_SHORTCIRCUIT;

#endif



    out.max_background = 32;

    out.congestion_threshold = 32;

    out.max_write = MAX_WRITE;