[OpenWrt-Tickets] [OpenWrt] #1639: size of /tmp partition in 2.6 targets

[OpenWrt]

#1639: size of /tmp partition in 2.6 targets
-----------------------------+----------------------------------------------
 Reporter:  ffrrrr at gmail  |       Owner:  developers
     Type:  defect           |      Status:  new       
 Priority:  normal           |   Milestone:            
Component:  packages         |    Keywords:            
-----------------------------+----------------------------------------------
 There is no 'Mem:' line in /proc/meminfo with linux-2.6.
 So, in /sbin/mount_root, or /etc/preinit for brcm47xx-2.6 target, the size
 of /tmp tmpfs does not get calculated by :
 {{{
 size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
 }}}

 the mount command becomes :
 {{{
 mount none /tmp -t tmpfs -o size=
 }}}

 /tmp is correctly mounted but it does not appear with a 'df'.

 It can be replaced by :
 {{{
 size=$(awk '/MemTotal:/ {l=5242880;mt=($2*1024);print((s=mt/2)<l)?mt-l:s}'
 /proc/meminfo)
 mount none /tmp -t tmpfs -o size=$size
 }}}

 but in fact, the default size of a tmpfs mount is half of the total
 memory, so it should be ok with :
 {{{
 mount none /tmp -t tmpfs
 }}}

-- 
Ticket URL: <https://dev.openwrt.org/ticket/1639>
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