btrfs: reada: use GFP_KERNEL everywhere

The readahead framework is not on the critical writeback path we don't
need to use GFP_NOFS for allocations. All error paths are handled and
the readahead failures are not fatal. The actual users (scrub,
dev-replace) will trigger reads if the blocks are not found in cache.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index 619f92963e27102fb47a6f119b65451bdf959bef..c5f1773c4794995eacc909976f62def80a9c64bc 100644 (file)
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -280,7 +280,7 @@ static struct reada_zone *reada_find_zone(struct btrfs_fs_info *fs_info,
        end = start + cache->key.offset - 1;
        btrfs_put_block_group(cache);
 
-       zone = kzalloc(sizeof(*zone), GFP_NOFS);
+       zone = kzalloc(sizeof(*zone), GFP_KERNEL);
        if (!zone)
                return NULL;
 
@@ -343,7 +343,7 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root,
        if (re)
                return re;
 
-       re = kzalloc(sizeof(*re), GFP_NOFS);
+       re = kzalloc(sizeof(*re), GFP_KERNEL);
        if (!re)
                return NULL;
 
@@ -566,7 +566,7 @@ static int reada_add_block(struct reada_control *rc, u64 logical,
        if (!re)
                return -1;
 
-       rec = kzalloc(sizeof(*rec), GFP_NOFS);
+       rec = kzalloc(sizeof(*rec), GFP_KERNEL);
        if (!rec) {
                reada_extent_put(root->fs_info, re);
                return -ENOMEM;
@@ -791,7 +791,7 @@ static void reada_start_machine(struct btrfs_fs_info *fs_info)
 {
        struct reada_machine_work *rmw;
 
-       rmw = kzalloc(sizeof(*rmw), GFP_NOFS);
+       rmw = kzalloc(sizeof(*rmw), GFP_KERNEL);
        if (!rmw) {
                /* FIXME we cannot handle this properly right now */
                BUG();
@@ -926,7 +926,7 @@ struct reada_control *btrfs_reada_add(struct btrfs_root *root,
                .offset = (u64)-1
        };
 
-       rc = kzalloc(sizeof(*rc), GFP_NOFS);
+       rc = kzalloc(sizeof(*rc), GFP_KERNEL);
        if (!rc)
                return ERR_PTR(-ENOMEM);