Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 03/35] [Suspend2] Get filewriter storage available. | Date | Tue, 27 Jun 2006 08:39:13 +1000 |
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Return the amount of storage available to the filewriter, in pages.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend_file.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c index 36db6b8..caa86bc 100644 --- a/kernel/power/suspend_file.c +++ b/kernel/power/suspend_file.c @@ -105,3 +105,34 @@ static void set_devinfo(struct block_dev } } +static int filewriter_storage_available(void) +{ + int result = 0; + struct block_device *bdev=filewriter_target_bdev; + + if (!target_inode) + return 0; + + switch (target_inode->i_mode & S_IFMT) { + case S_IFSOCK: + case S_IFCHR: + case S_IFIFO: /* Socket, Char, Fifo */ + return -1; + case S_IFREG: /* Regular file: current size - holes + free + space on part */ + result = target_storage_available; + break; + case S_IFBLK: /* Block device */ + if (!bdev->bd_disk) { + printk("bdev->bd_disk null.\n"); + return 0; + } + + result = (bdev->bd_part ? + bdev->bd_part->nr_sects : + bdev->bd_disk->capacity) >> (PAGE_SHIFT - 9); + } + + return result; +} + -- Nigel Cunningham nigel at suspend2 dot net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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