diff options
| author | Jiri Slaby | 2010-05-01 23:52:02 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki | 2010-05-10 23:08:17 +0200 |
| commit | d3c1b24c50e8b2bbc840322caf26c7eada594d21 (patch) | |
| tree | b411a494ec6328e217b9bfa5b619f5aa2003968a /kernel/power/power.h | |
| parent | 6a727b43be8b005609e893a80af980808012cfdb (diff) | |
PM / Hibernate: Snapshot cleanup
Remove support of reads with offset. This means snapshot_read/write_next
now does not accept count parameter. It allows to clean up the functions
and snapshot handle which no longer needs to care about offsets.
/dev/snapshot handler is converted to simple_{read_from,write_to}_buffer
which take care of offsets.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/power.h')
| -rw-r--r-- | kernel/power/power.h | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 46c5a26630a3..b1e207dde1c2 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -97,24 +97,12 @@ extern int hibernate_preallocate_memory(void); */ struct snapshot_handle { - loff_t offset; /* number of the last byte ready for reading - * or writing in the sequence - */ unsigned int cur; /* number of the block of PAGE_SIZE bytes the * next operation will refer to (ie. current) */ - unsigned int cur_offset; /* offset with respect to the current - * block (for the next operation) - */ - unsigned int prev; /* number of the block of PAGE_SIZE bytes that - * was the current one previously - */ void *buffer; /* address of the block to read from * or write to */ - unsigned int buf_offset; /* location to read from or write to, - * given as a displacement from 'buffer' - */ int sync_read; /* Set to one to notify the caller of * snapshot_write_next() that it may * need to call wait_on_bio_chain() @@ -125,12 +113,12 @@ struct snapshot_handle { * snapshot_read_next()/snapshot_write_next() is allowed to * read/write data after the function returns */ -#define data_of(handle) ((handle).buffer + (handle).buf_offset) +#define data_of(handle) ((handle).buffer) extern unsigned int snapshot_additional_pages(struct zone *zone); extern unsigned long snapshot_get_image_size(void); -extern int snapshot_read_next(struct snapshot_handle *handle, size_t count); -extern int snapshot_write_next(struct snapshot_handle *handle, size_t count); +extern int snapshot_read_next(struct snapshot_handle *handle); +extern int snapshot_write_next(struct snapshot_handle *handle); extern void snapshot_write_finalize(struct snapshot_handle *handle); extern int snapshot_image_loaded(struct snapshot_handle *handle); |