tventi: handle FS block size > MaxIo - plan9port - [fork] Plan 9 from user space
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       ---
 (DIR) commit bf930686861b74414bc6abb8a0455605d32743d7
 (DIR) parent e066b12927b496c9f3b442a5928bacfb48e6334e
 (HTM) Author: Venkatesh Srinivas <extrudedaluminiu@gmail.com>
       Date:   Sun, 23 Aug 2009 17:35:22 -0400
       
       venti: handle FS block size > MaxIo
       
       http://codereview.appspot.com/110071
       
       Diffstat:
         M src/cmd/venti/srv/part.c            |       7 +++++--
       
       1 file changed, 5 insertions(+), 2 deletions(-)
       ---
 (DIR) diff --git a/src/cmd/venti/srv/part.c b/src/cmd/venti/srv/part.c
       t@@ -94,6 +94,8 @@ parsepart(char *name, char **file, char **subpart, u64int *lo, u64int *hi)
                return 0;
        }
        
       +#undef min
       +#define min(a, b) ((a) < (b) ? (a) : (b))
        Part*
        initpart(char *name, int mode)
        {
       t@@ -166,6 +168,9 @@ initpart(char *name, int mode)
                                part->fsblocksize = sfs.f_bsize;
                }
        #endif
       +
       +        part->fsblocksize = min(part->fsblocksize, MaxIo);
       +
                if(subname && findsubpart(part, subname) < 0){
                        werrstr("cannot find subpartition %s", subname);
                        freepart(part);
       t@@ -224,8 +229,6 @@ partblocksize(Part *part, u32int blocksize)
         * body of the loop: up to MaxIo bytes at a time.  If everything isn't aligned properly,
         * we work one block at a time.
         */
       -#undef min
       -#define min(a, b) ((a) < (b) ? (a) : (b))
        int
        prwb(char *name, int fd, int isread, u64int offset, void *vbuf, u32int count, u32int blocksize)
        {