diff options
Diffstat (limited to 'fs/bcachefs/fs-io.c')
| -rw-r--r-- | fs/bcachefs/fs-io.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/fs/bcachefs/fs-io.c b/fs/bcachefs/fs-io.c index a3fb60383725..c539ed3aa48d 100644 --- a/fs/bcachefs/fs-io.c +++ b/fs/bcachefs/fs-io.c @@ -2720,20 +2720,26 @@ long bch2_fallocate_dispatch(struct file *file, int mode, loff_t offset, loff_t len) { struct bch_inode_info *inode = file_bch_inode(file); + struct bch_fs *c = inode->v.i_sb->s_fs_info; + long ret; - if (!(mode & ~(FALLOC_FL_KEEP_SIZE|FALLOC_FL_ZERO_RANGE))) - return bchfs_fallocate(inode, mode, offset, len); - - if (mode == (FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE)) - return bchfs_fpunch(inode, offset, len); - - if (mode == FALLOC_FL_INSERT_RANGE) - return bchfs_fcollapse_finsert(inode, offset, len, true); + if (!percpu_ref_tryget(&c->writes)) + return -EROFS; - if (mode == FALLOC_FL_COLLAPSE_RANGE) - return bchfs_fcollapse_finsert(inode, offset, len, false); + if (!(mode & ~(FALLOC_FL_KEEP_SIZE|FALLOC_FL_ZERO_RANGE))) + ret = bchfs_fallocate(inode, mode, offset, len); + else if (mode == (FALLOC_FL_PUNCH_HOLE|FALLOC_FL_KEEP_SIZE)) + ret = bchfs_fpunch(inode, offset, len); + else if (mode == FALLOC_FL_INSERT_RANGE) + ret = bchfs_fcollapse_finsert(inode, offset, len, true); + else if (mode == FALLOC_FL_COLLAPSE_RANGE) + ret = bchfs_fcollapse_finsert(inode, offset, len, false); + else + ret = -EOPNOTSUPP; + + percpu_ref_put(&c->writes); - return -EOPNOTSUPP; + return ret; } static void mark_range_unallocated(struct bch_inode_info *inode, |