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BUG/MINOR: haterm: preserve the pipe size margin for splicing

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Originally in httpterm we used to allocate 5/4 of the size of a pipe to
permit to use vmsplice because there's some fragmentation or overhead
internally that requires to use a bit of margin. While this was initially
applied to haterm as well, it was accidentally lost with commit fb82dece47
("BUG/MEDIUM: haterm: Properly initialize the splicing support for haterm"),
resulting in errors about vmsplice() whenever tune.pipesize is set. Let's
enforce the ratio again.

No backport is needed.
This commit is contained in:
Willy Tarreau 2026-04-13 18:32:25 +02:00
parent 61f04d1951
commit 6d16b11022
1 changed files with 2 additions and 2 deletions
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4
src/haterm.c
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@ -1225,7 +1225,7 @@ static void hstream_init_splicing(void)
int total, ret;
#ifdef F_SETPIPE_SZ
fcntl(master_pipe->cons, F_SETPIPE_SZ, pipesize);
fcntl(master_pipe->cons, F_SETPIPE_SZ, pipesize * 5 / 4);
#endif
total = ret = 0;
do {
@ -1238,7 +1238,7 @@ static void hstream_init_splicing(void)
if (master_pipesize < pipesize) {
if (master_pipesize < 60*1024) {
/* Older kernels were limited to around 60-61 kB */
ha_warning("Failed to vmsplice haterm mastre pipe after %lu bytes, splicing disabled for haterm\n", master_pipesize);
ha_warning("Failed to vmsplice haterm master pipe after %lu bytes, splicing disabled for haterm\n", master_pipesize);
put_pipe(master_pipe);
master_pipe = NULL;
master_pipesize = 0;