Convert GFP_KERNEL to GFP_ATOMIC in a function that may be called with locks held.
See the call site on line 751, and the call to spin_lock on line 744. Generated by: scripts/coccinelle/locks/call_kern.cocci Signed-off-by: Fengguang Wu <[email protected]> Signed-off-by: Julia Lawall <[email protected]> --- Perhaps there is a way to reorganize the code such that pblk_get_blk is not called under the lock. tree: https://github.com/OpenChannelSSD/linux.git pblk head: 01eab75e8310ada5c5d387ee0d77c9051f2ba238 commit: 8e755964c7e8b0266a95fb90557823dacf9da12f [11/21] pblk: do not use mempool for write buffer allocation pblk.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/lightnvm/pblk.c +++ b/drivers/lightnvm/pblk.c @@ -282,14 +282,14 @@ static struct pblk_block *pblk_get_blk(s void *data; int nentries = dev->sec_per_blk; - data = kmalloc(dev->sec_per_blk * dev->sec_size, GFP_KERNEL); + data = kmalloc(dev->sec_per_blk * dev->sec_size, GFP_ATOMIC); if (!data) { pr_err("nvm: pblk: cannot allocate write buffer for block\n"); return NULL; } entries = kmalloc(dev->sec_per_blk * sizeof(struct buf_entry), - GFP_KERNEL); + GFP_ATOMIC); if (!entries) { pr_err("nvm: pblk: cannot allocate write buffer for block\n"); kfree(data); @@ -297,7 +297,7 @@ static struct pblk_block *pblk_get_blk(s } sync_bitmap = kmalloc(BITS_TO_LONGS(nentries) * sizeof(unsigned long), - GFP_KERNEL); + GFP_ATOMIC); if (!sync_bitmap) { kfree(data); kfree(entries);
