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zram: move zram size warning to documentation

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Move zram warning about disksize and size of memory correlation to zram
documentation.

Signed-off-by: Sergey Senozhatsky <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Cc: Jerome Marchand <[email protected]>
Cc: Nitin Gupta <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Sergey Senozhatsky 2014-04-07 15:38:07 -07:00 • committed by Linus Torvalds
commit e64cd51d2f
2 changed files with 5 additions and 15 deletions
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15
drivers/block/zram/zram_drv.c
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@ -535,23 +535,8 @@ static void zram_reset_device(struct zram *zram, bool reset_capacity)
static void zram_init_device(struct zram *zram, struct zram_meta *meta)
{
if (zram->disksize > 2 * (totalram_pages << PAGE_SHIFT)) {
pr_info(
"There is little point creating a zram of greater than "
"twice the size of memory since we expect a 2:1 compression "
"ratio. Note that zram uses about 0.1%% of the size of "
"the disk when not in use so a huge zram is "
"wasteful.\n"
"\tMemory Size: %lu kB\n"
"\tSize you selected: %llu kB\n"
"Continuing anyway ...\n",
(totalram_pages << PAGE_SHIFT) >> 10, zram->disksize >> 10
);
}
/* zram devices sort of resembles non-rotational disks */
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, zram->disk->queue);
zram->meta = meta;
pr_debug("Initialization done!\n");
}