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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-09-29 05:00:03 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 12:18:12 -0400
commitca9bda00b4aafc42cd3d1b9d32934463e2993b4c (patch)
treedbb7ba5320bb8d1cbf97b3493687cb87932ad5f4 /drivers/char/selection.c
parentae78bf9c4f5fde3c67e2829505f195d7347ce3e4 (diff)
[PATCH] tty locking on resize
The current kernel serializes console resizes but does not serialize the resize against the tty structure updates. This means that while two parallel resizes cannot mess up the console you can get incorrect results reported. Secondly while doing this I added vc_lock_resize() to lock and resize the console. This leaves all knowledge of the console_sem in the vt/console driver and kicks it out of the tty layer, which is good Thirdly while doing this I decided I couldn't stand "disallocate" any longer so I switched it to "deallocate". Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/selection.c')
-rw-r--r--drivers/char/selection.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/selection.c b/drivers/char/selection.c
index 71093a9fc462..74cff839c857 100644
--- a/drivers/char/selection.c
+++ b/drivers/char/selection.c
@@ -33,7 +33,7 @@ extern void poke_blanked_console(void);
33 33
34/* Variables for selection control. */ 34/* Variables for selection control. */
35/* Use a dynamic buffer, instead of static (Dec 1994) */ 35/* Use a dynamic buffer, instead of static (Dec 1994) */
36struct vc_data *sel_cons; /* must not be disallocated */ 36struct vc_data *sel_cons; /* must not be deallocated */
37static volatile int sel_start = -1; /* cleared by clear_selection */ 37static volatile int sel_start = -1; /* cleared by clear_selection */
38static int sel_end; 38static int sel_end;
39static int sel_buffer_lth; 39static int sel_buffer_lth;