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Merge a781ffe410 ("loop: factor out a loop_assign_backing_file helper") into android16-6.12-lts

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Steps on the way to 6.12.29

Change-Id: I6c4f253048ee20e8f0f510cb211a4899c8baaa6b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2025-06-05 08:32:37 +00:00
parent f6f856e093 a781ffe410
commit d2f3f294cf
1 changed files with 10 additions and 10 deletions
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20
drivers/block/loop.c
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@@ -500,6 +500,14 @@ static int loop_validate_file(struct file *file, struct block_device *bdev)
return 0;
}
static void loop_assign_backing_file(struct loop_device *lo, struct file *file)
{
lo->lo_backing_file = file;
lo->old_gfp_mask = mapping_gfp_mask(file->f_mapping);
mapping_set_gfp_mask(file->f_mapping,
lo->old_gfp_mask & ~(__GFP_IO | __GFP_FS));
}
/*
* loop_change_fd switched the backing store of a loopback device to
* a new file. This is useful for operating system installers to free up
@@ -552,10 +560,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev,
disk_force_media_change(lo->lo_disk);
blk_mq_freeze_queue(lo->lo_queue);
mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask);
lo->lo_backing_file = file;
lo->old_gfp_mask = mapping_gfp_mask(file->f_mapping);
mapping_set_gfp_mask(file->f_mapping,
lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
loop_assign_backing_file(lo, file);
loop_update_dio(lo);
blk_mq_unfreeze_queue(lo->lo_queue);
partscan = lo->lo_flags & LO_FLAGS_PARTSCAN;
@@ -947,7 +952,6 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
const struct loop_config *config)
{
struct file *file = fget(config->fd);
struct address_space *mapping;
struct queue_limits lim;
int error;
loff_t size;
@@ -983,8 +987,6 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
if (error)
goto out_unlock;
mapping = file->f_mapping;
if ((config->info.lo_flags & ~LOOP_CONFIGURE_SETTABLE_FLAGS) != 0) {
error = -EINVAL;
goto out_unlock;
@@ -1016,9 +1018,7 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO;
lo->lo_device = bdev;
lo->lo_backing_file = file;
lo->old_gfp_mask = mapping_gfp_mask(mapping);
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
loop_assign_backing_file(lo, file);
lim = queue_limits_start_update(lo->lo_queue);
loop_update_limits(lo, &lim, config->block_size);