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pipe: save all pipe data in a separate file

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A pipe buffer has 16 slots. A slot is page, offset and size.
When we use splice and data is not aligned, splice connects
a page from file cache and set offset. For this reason we loose
a part of buffer.

If a data size is more than 15 pages, data will be aligned in a image.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2012-04-05 20:02:00 +04:00
committed by Pavel Emelyanov
parent 7b10ef0761
commit 96be8be2d1
5 changed files with 75 additions and 5 deletions
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7
crtools.c
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@@ -81,6 +81,13 @@ struct cr_fd_desc_tmpl fdset_template[CR_FD_MAX] = {
.show = show_pipes,
},
/* info about pipes - fds, pipe id and pipe data */
[CR_FD_PIPES_DATA] = {
.fmt = FMT_FNAME_PIPES_DATA,
.magic = PIPES_DATA_MAGIC,
.show = show_pipes_data,
},
/* info about process linkage */
[CR_FD_PSTREE] = {
.fmt = FMT_FNAME_PSTREE,