shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00
Code Releases Activity

locking: introduce prioritized_section

Browse Source 
Introduce prioritized_section() as a closer match to previous logic
of critical_section() that has been held over longer sequence of
ioctl commands - essentially it's matching operation on a single
cookie.

While 'critical_section()' now corresponds to locked memory - we hold
this memory only between suspend/resume thus notion of 'cookie' was
lost.

This patch restores some logic unintentionaly lost with dropping
memory locking for just activation/deactivation calls.
This commit is contained in:
Zdenek Kabelac 2018-03-15 09:07:24 +01:00
parent 043f58452a
commit 6365f011b0
3 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.178 - Version 2.02.178 -
===================================== =====================================
Add prioritized_section() to restore cookie boundaries (2.02.177).
Enhance error messages when read error happens. Enhance error messages when read error happens.
Enhance mirror log initialization for old mirror target. Enhance mirror log initialization for old mirror target.
Skip private crypto and stratis devices. Skip private crypto and stratis devices.

5
lib/mm/memlock.c
View File

@ -634,6 +634,11 @@ int critical_section(void)
return _critical_section; return _critical_section;
} }
int prioritized_section(void)
{
return _priority_raised;
}
/* /*
* The memlock_*_daemon functions will force the mlockall() call that we need * The memlock_*_daemon functions will force the mlockall() call that we need
* to stay in memory, but they will have no effect on device scans (unlike * to stay in memory, but they will have no effect on device scans (unlike

1
lib/mm/memlock.h
View File

@ -34,6 +34,7 @@ struct cmd_context;
void critical_section_inc(struct cmd_context *cmd, const char *reason); void critical_section_inc(struct cmd_context *cmd, const char *reason);
void critical_section_dec(struct cmd_context *cmd, const char *reason); void critical_section_dec(struct cmd_context *cmd, const char *reason);
int critical_section(void); int critical_section(void);
int prioritized_section(void);
void memlock_inc_daemon(struct cmd_context *cmd); void memlock_inc_daemon(struct cmd_context *cmd);
void memlock_dec_daemon(struct cmd_context *cmd); void memlock_dec_daemon(struct cmd_context *cmd);
int memlock_count_daemon(void); int memlock_count_daemon(void);