Commit 0a52d108 authored by David Sterba's avatar David Sterba

btrfs: defrag: make readahead state allocation failure non-fatal

All sorts of readahead errors are not considered fatal. We can continue
defragmentation without it, with some potential slow down, which will
last only for the current inode.
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 63e727ec
......@@ -1273,13 +1273,13 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
extent_thresh = SZ_256K;
/*
* if we were not given a file, allocate a readahead
* context
* If we were not given a file, allocate a readahead context. As
* readahead is just an optimization, defrag will work without it so
* we don't error out.
*/
if (!file) {
ra = kzalloc(sizeof(*ra), GFP_KERNEL);
if (!ra)
return -ENOMEM;
if (ra)
file_ra_state_init(ra, inode->i_mapping);
} else {
ra = &file->f_ra;
......@@ -1363,8 +1363,9 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
if (i + cluster > ra_index) {
ra_index = max(i, ra_index);
btrfs_force_ra(inode->i_mapping, ra, file, ra_index,
cluster);
if (ra)
btrfs_force_ra(inode->i_mapping, ra, file,
ra_index, cluster);
ra_index += cluster;
}
......
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